Trojan.Installmonstr
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.
| Popularity Rank: | 3,220 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 81,090 |
| First Seen: | June 26, 2014 |
| Last Seen: | November 17, 2025 |
| OS(es) Affected: | Windows |
Table of Contents
SpyHunter Detects & Remove Trojan.Installmonstr
File System Details
Trojan.Installmonstr 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. | excelviewer_setup.exe | eb53ee79255c2e94b5c31ea5ddcce7c7 | 1,000 |
Analysis Report
General information
| Family Name: | Trojan.Installmonstr |
|---|---|
| Signature status: | Self Signed |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
74bd5fa0652cedaa90984335d570e941
SHA1:
ce736c6d8d9bf44a34cbb2c41960e40dc2d4cf71
SHA256:
80E9726CB733E2660828C416729AB445E0BA55B7024FF16CA892FB6A25C3E3CF
File Size:
3.19 MB, 3188168 bytes
|
|
MD5:
970befb365c781f59c5308e67aaa2e6a
SHA1:
726906787c7a2bb35ffe6d3605eba9f1eb43a544
SHA256:
52E1E306BC39EEB05F3C3C94E26C88B901B21E258574244FA2345B4A77BBA2F4
File Size:
1.28 MB, 1281680 bytes
|
|
MD5:
2a95d3d07ae8daf422f556cbd4293709
SHA1:
190814ef71d2648798f4ad51051411581df97a7c
SHA256:
60F9D05B2086AF66ADF567B218B6EB16B06D01AC01514C5977C9C918B0BFC140
File Size:
4.80 MB, 4797128 bytes
|
|
MD5:
e81020fd54ed7561a4a907087b3696b0
SHA1:
8a7e79e584379d0e92348888c037774ce8456ab3
SHA256:
7042CE486BDCE02DB99C08B19FFFC6AF3AA25541C239C58F387D73D07C949E72
File Size:
537.02 KB, 537024 bytes
|
|
MD5:
3003e8f1ea15d2b91905a001ce628159
SHA1:
a8541bee57c20f690f560ddcaa18a7ccd9011aa0
SHA256:
B3A4648059688AD1EBC31AAC116BFF1800E5B031BCFA99F08965CE945CB27A31
File Size:
4.59 MB, 4586664 bytes
|
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 been packed
- File has TLS information
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
Show More
- 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 |
|---|---|
| Comments | This installation was built with Inno Setup. |
| Company Name |
|
| File Description |
|
| File Version |
|
| Internal Name |
|
| Legal Copyright |
|
| Legal Trademarks |
|
| Original Filename | SfxSetup.exe |
| Product Name |
|
| Product Version |
|
Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| Bastion Develop, TOV | COMODO RSA Code Signing CA | Self Signed |
| LLC KOLORIS IT | COMODO RSA Code Signing CA | Self Signed |
| Smart Solyushns Kompani, TOV | COMODO RSA Code Signing CA | Self Signed |
| Velko Smart, TOV | COMODO RSA Code Signing CA | Self Signed |
| ALLMYAPPS | thawte Primary Root CA | Root Not Trusted |
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: | 6,967 |
|---|---|
| Potentially Malicious Blocks: | 850 |
| Whitelisted Blocks: | 6,116 |
| Unknown Blocks: | 1 |
Visual Map
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0
0
0
0
x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
x
0
x
0
x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...
Data truncated
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.- InstallMonstr.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 |
|---|---|
| c:\users\user\appdata\local\temp\7z6fffc428\setup.exe | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\7z6fffc428\setup.exe | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\is-vr2av.tmp\726906787c7a2bb35ffe6d3605eba9f1eb43a544_0001281680.tmp | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsjef75.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete |
| c:\users\user\appdata\local\temp\nsjef76.tmp | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\dialer.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\dialer.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\inetc.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\inetc.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\newadvsplash.dll | Generic Write,Read Attributes |
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| c:\users\user\appdata\local\temp\nsjef76.tmp\newadvsplash.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\registry.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\registry.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\splash-screen.gif | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\splash-screen.gif | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\system.dll | Generic Write,Read Attributes |
| c:\users\user\appdata\local\temp\nsjef76.tmp\system.dll | Synchronize,Write Attributes |
| c:\users\user\appdata\local\temp\~df6c69e9172441289b.tmp | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\roaming\allmyapps\infos.json | Generic Write,Read Attributes |
| c:\users\user\downloads\190814ef71d2648798f4ad51051411581df97a7c_0004797128 | Generic Write,Read Attributes |
| c:\users\user\downloads\a8541bee57c20f690f560ddcaa18a7ccd9011aa0_0004586664 | Generic Write,Read 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\control\session manager::pendingfilerenameoperations | \??\C:\Users\Yqwusbhc\AppData\Local\Temp\nsjEF76.tmp\newadvsplash.dll | RegNtPreCreateKey |
| HKLM\system\controlset001\control\session manager::pendingfilerenameoperations | \??\C:\Users\Yqwusbhc\AppData\Local\Temp\nsjEF76.tmp\newadvsplash.dll \??\C:\Users\Yqwusbhc\AppData\Local\Temp\nsjEF76.tmp\regi | RegNtPreCreateKey |
| HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475 | 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 |
|---|---|
| Anti Debug |
|
| User Data Access |
|
| Keyboard Access |
|
| Process Manipulation Evasion |
|
| Process Shell Execute |
|
| Network Winsock2 |
|
| Network Winsock |
|
| Network Winhttp |
|
| Network Wininet |
|
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\Wfyvwmlp\AppData\Local\Temp\is-VR2AV.tmp\726906787c7a2bb35ffe6d3605eba9f1eb43a544_0001281680.tmp" /SL5="$2013E,1027327,56832,c:\users\user\downloads\726906787c7a2bb35ffe6d3605eba9f1eb43a544_0001281680"
|
(NULL) C:\Users\Yqwusbhc\AppData\Local\Temp\7z6FFFC428\Setup.exe ama:install:b56354872ad1648e2c0892e5be370699ot
|
