Trojan.Zapchast.B
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 80 % (High) |
| Infected Computers: | 1,382 |
| First Seen: | December 3, 2012 |
| Last Seen: | June 20, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Zapchast.B on your system indicates a potential security threat that requires immediate attention. Trojan-type threats are known for their ability to disguise themselves as legitimate software, making them difficult to detect without proper security tools. Understanding the nature of this threat and how it operates is crucial for effective removal and prevention of future infections.
Table of Contents
What Is Trojan.Zapchast.B?
Trojan.Zapchast.B is identified as a Trojan-type threat, which means it is designed to allow unauthorized access to a computer system. Trojans can be used to spy on users, steal sensitive information, or disrupt system operation. They often masquerade as useful software but, once installed, can cause significant harm. The name "Trojan.Zapchast.B" itself does not directly indicate a specific malware family, but rather it is a designation used by security software to identify this particular threat.
How Trojan.Zapchast.B Operates
Trojan.Zapchast.B, like other Trojans, operates by deceiving users into installing it on their systems. This can happen through various means, such as downloading and executing malicious files, opening malicious email attachments, or visiting compromised websites. Once installed, it can create backdoors for remote access, allowing attackers to control the infected system, steal data, or use the system for malicious activities like spreading spam or malware.
Symptoms of Infection
Identifying a Trojan infection can be challenging due to its stealthy nature. However, some common symptoms may indicate the presence of Trojan.Zapchast.B or similar threats. These include unexpected system crashes, slow system performance, unusual network activity, pop-ups, and unfamiliar programs or toolbars in your browser. If you notice any of these symptoms, it is essential to take immediate action to secure your system.
How to Remove Trojan.Zapchast.B
- Enter Safe Mode with Networking to prevent the malware from loading and to allow for internet access. This will make it easier to download and install removal tools if necessary.
- Perform a full scan of your system using a reputable anti-malware tool such as SpyHunter. Ensure the tool is updated with the latest definitions to effectively detect and remove the threat.
- Uninstall suspicious programs that you do not recognize or that were installed around the time the threat was detected. Be cautious and only remove programs you are sure are not needed for system operation.
- Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings. This can help remove any malicious extensions or settings changes made by the Trojan.
- After completing the above steps, reboot your system and perform another full scan to ensure that the threat has been completely removed.
Conclusion
Removing Trojan.Zapchast.B requires a systematic approach to ensure that all components of the malware are eliminated from the system. By following the steps outlined above and maintaining vigilance in terms of system security, you can protect your computer from similar threats in the future. Regularly updating your operating system, using strong antivirus software, avoiding suspicious downloads, and being cautious with email attachments are key practices in preventing Trojan infections. Remember, proactive security measures are the best defense against malware threats like Trojan.Zapchast.B.
Aliases
15 security vendors flagged this file as malicious.
| Antivirus Vendor | Detection |
|---|---|
| AVG | Dropper.Generic6.BACF |
| GData | MSIL:Downloader-FT |
| Kaspersky | Trojan-Dropper.Win32.Dapato.bqjc |
| Avast | MSIL:Downloader-FT [Trj] |
| Symantec | Trojan.ADH.2 |
| Panda | Trj/OCJ.A |
| AVG | Dropper.Generic6.CNQH |
| Fortinet | W32/Zapchast.KNK!tr |
| Ikarus | Trojan.Msil |
| Microsoft | Trojan:MSIL/Zapchast.B |
| AntiVir | TR/Dropper.Gen |
| Sophos | Mal/Generic-L |
| Kaspersky | Trojan.MSIL.Zapchast.knk |
| Avast | Win32:Dropper-gen [Drp] |
| Symantec | Trojan.Gen |
SpyHunter Detects & Remove Trojan.Zapchast.B
File System Details
Trojan.Zapchast.B may create the following file(s):
| # | File Name | MD5 |
Detections
Detections: The number of confirmed and suspected cases of a particular threat detected on
infected computers as reported by SpyHunter.
|
|---|---|---|---|
| 1. | 8515eb34d8f9de5af815466e9715b3e5.exe | 3a5063a17da20d0e0661893e82dbeb19 | 12 |
| 2. | wscntfy.exe | 6ae3751038bbaf0d72c3d80b4532e2d0 | 1 |
Analysis Report
General information
| Family Name: | Trojan.Zapchast.B |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
f2287fd5e45c7e59a8bbbc5d5214c0c2
SHA1:
853b1165e3e2bb03b44a7a4a214a89fbeaf27c91
SHA256:
282C1B47718E46569558A682901AD4CF42B77A4CE70B526FB2DC5A0A8DF91E47
File Size:
5.26 MB, 5256778 bytes
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MD5:
1576bf779580fe781379648a4ce237af
SHA1:
ef3fc3fea185a6dab9cc7c7162dd08b314e2476d
SHA256:
8D8913532F4E9755ED13AFC9852070C61083C726669A6566ECFF0B75D87A23F6
File Size:
6.83 MB, 6833787 bytes
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MD5:
56755e0b91011cd0604b223d7ca23b16
SHA1:
cdba6c96a435a7f3eb29b6c28455e2f2830638b5
SHA256:
C56783214AF950553023508328368557A5F15ED5507961DABB07C3B353AF0147
File Size:
8.12 MB, 8116665 bytes
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MD5:
da0c266c6ab6c60af20c59f73d2876f4
SHA1:
44d0cdb16b1f1eb8e60fb8b0647b9e697c4b14df
SHA256:
AFF7AF21381BDF17C3ADFDA37F45367BCDD588ED21382B49A7B232E75B71892A
File Size:
8.37 MB, 8368480 bytes
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MD5:
70860a9442b1960311166c66901f00d0
SHA1:
607ef9fcb9d68b8f150612076a09c1adaa28ce1d
SHA256:
47A70A0B27D8C65B136AE381408B51D189F7C701E892E69E037358CBB456DA04
File Size:
6.01 MB, 6009145 bytes
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MD5:
4a908b1ad8bae122473ef41b08836f4f
SHA1:
f6c4dc5b77299f5c3da352fbd5cc0ecb1912dad5
SHA256:
F3D91A375D16F578487A839FD10A912EBE0B960C92CBABE86CBF8C714DEDD884
File Size:
36.86 KB, 36864 bytes
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MD5:
59fcd53479121c269b8a441b3e528ab9
SHA1:
36d22bc51d97d5de36e8c6f85b069c1f8c340342
SHA256:
EA41E507BCFA898B35EEC0662DE04452099670054E4138A693E974705DC65E7B
File Size:
1.90 MB, 1903248 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have relocations information
- File doesn't have security information
- File has exports table
- File has TLS information
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
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- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Builder | 558486505 15:48:11 17/05/2022 |
| Comments |
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| Company Name |
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| Created | 7z SFX Constructor v4.6.0.0 (http://usbtor.ru/viewtopic.php?t=798) |
| File Description |
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| File Version |
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| Internal Name |
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| Legal Copyright |
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| Legal Trademarks | Made with Paquet Builder, http://www.installpackbuilder.com |
| Original Filename |
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| Product Name |
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| Product Version |
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| Web | No homepage |
File Traits
- 7-zip (In Overlay)
- 7-zip SFX
- Installer Version
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 524 |
|---|---|
| Potentially Malicious Blocks: | 0 |
| Whitelisted Blocks: | 520 |
| Unknown Blocks: | 4 |
Visual Map
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0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block
? - Unknown Block
x - Potentially Malicious Block
Similar Families
Similar Families
This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.- Zapchast.B
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| \device\namedpipe\gmdasllogger | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-14vtb.tmp\ef3fc3fea185a6dab9cc7c7162dd08b314e2476d_0006833787.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\is-2e1jj.tmp\_isetup\_setup64.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\is-2e1jj.tmp\_isetup\_shfoldr.dll | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\temp\nsh26ff.tmp\langdll.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsl310b.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsq312b.tmp\langdll.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\pb36fa7384\pbcore.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\pb36fa7384\pbdlg.dat | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\pb36fa7384\pbfprop.dat | Generic Write,Read Attributes |
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| c:\users\user\appdata\local\temp\pb36fa7384\pbheader.bmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\pb36fa7384\pblng.dat | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\pb36fa7384\pbremove.dat | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\add.reg | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\add.reg | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\deviceremover.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\deviceremover.exe | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\deviceremover.pdb | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\deviceremover.pdb | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\killduplicate.cmd | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\killduplicate.cmd | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools\deviceremovercleanup32.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools\deviceremovercleanup32.exe | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools\deviceremovercleanup64.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools\deviceremovercleanup64.exe | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools\deviceremoverstartuphelper.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\tweaks\devrm\tools\deviceremoverstartuphelper.exe | Synchronize,Write Attributes |
Registry Modifications
Registry Modifications
This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.| Key::Value | Data | API Name |
|---|---|---|
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet | RegNtPreCreateKey | |
| HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect | RegNtPreCreateKey | |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 袙ꀫ붔ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 䵐ꀰ붔ǜ | RegNtPreCreateKey |
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Keyboard Access |
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| Process Shell Execute |
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| User Data Access |
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| Process Manipulation Evasion |
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| Syscall Use |
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| Anti Debug |
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| Process Terminate |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
"C:\Users\Mkglxozr\AppData\Local\Temp\is-14VTB.tmp\ef3fc3fea185a6dab9cc7c7162dd08b314e2476d_0006833787.tmp" /SL5="$20198,6347655,119296,c:\users\user\downloads\ef3fc3fea185a6dab9cc7c7162dd08b314e2476d_0006833787"
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(NULL) cmd /c ""C:\Users\Dexeircf\AppData\Local\Temp\Tweaks\DevRm\KillDuplicate.cmd" "C:\Users\Dexeircf\AppData\Local\Temp\Tweaks\DevRm" "607ef9fcb9d68b8f150612076a09c1adaa28ce1d_0006009145""
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WriteConsole: The system canno
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(NULL) regedit.exe /s "Add.reg"
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C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\36d22bc51d97d5de36e8c6f85b069c1f8c340342_0001903248.,LiQMAxHB
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