Trojan.Downloader.FSB
Table of Contents
Analysis Report
General information
| Family Name: | Trojan.Downloader.FSB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
d04b2a9cb67ff8bff9968eb4b22e2e87
SHA1:
a2fc036dd0aa35c9a3a1c94fbdc30d798acd778d
SHA256:
9AEA233B85310937F6667F79B9210B0745D9B0BEF93D75FA8F545BC993F8B50D
File Size:
330.75 KB, 330752 bytes
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MD5:
b0827e73bafe1613f0150a537e42c0e5
SHA1:
aebf5663d3eed72d1405566b7a35c9719b9cbc6c
SHA256:
DD0B634862EEEA6A5ABD63A6CE60A399ADDB6D263BADF90259DBA1020EB198F6
File Size:
316.42 KB, 316416 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have security information
- File has exports table
- File is 64-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
Show More
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- dll
- fptable
- No Version Info
- ntdll
- WriteProcessMemory
- x64
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: | 1,079 |
|---|---|
| Potentially Malicious Blocks: | 9 |
| Whitelisted Blocks: | 1,042 |
| Unknown Blocks: | 28 |
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.- Agent.KFSN
- Agent.UFR
- Malex.N
- Trojan.Agent.Gen.ASD
- Trojan.Agent.Gen.BL
Show More
- Trojan.Agent.Gen.BT
- Trojan.Agent.Gen.FN
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 |
|---|---|
| \\?\volume{a7c706ea-0000-0000-0000-100000000000}\boot\bcd | Read Data,Read Control,Write Data |
| \\?\volume{a7c706ea-0000-0000-0000-100000000000}\boot\bcd | Write Attributes |
| c:\windows\diagerr.xml | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\windows\diagwrn.xml | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\windows\setupact.log | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\windows\setuperr.log | Generic Read,Write Data,Write Attributes,Write extended,Append data |
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 |
|---|---|---|
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | ࢇ㴘쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 쵋㴜쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | ᡟ㵩쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | ᡟ㵩쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 矴㷈쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 矴㷈쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 뀊㸁쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 뀊㸁쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 駮㸬쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | ﮹㸮쒘ǜ | RegNtPreCreateKey |
Show More
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 㹙쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 䡮㹜쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 㒼㺇쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 阃㺉쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 罼㺴쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | 㺶쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 챼㻡쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | ⸶㻤쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe | 똭㼌쒘ǜ | RegNtPreCreateKey |
| HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe | ᢎ㼏쒘ǜ | 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 |
|---|---|
| Syscall Use |
Show More
3 additional items are not displayed above. |
| Process Manipulation Evasion |
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| Process Shell Execute |
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| Anti Debug |
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| User Data Access |
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| Network Winsock2 |
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| Network Winsock |
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| Network Icmp |
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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.
cmd.exe /c ping -n 1 -w 1000 8.8.8.8 > nul
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C:\WINDOWS\system32\PING.EXE ping -n 1 -w 1000 8.8.8.8
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cmd.exe /C reagentc /disable
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C:\WINDOWS\system32\ReAgentc.exe reagentc /disable
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WriteConsole: REAGENTC.EXE: Wi
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Show More
cmd.exe /C takeown /F "%SystemRoot%\System32\reagentc.exe"
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C:\WINDOWS\system32\takeown.exe takeown /F "C:\WINDOWS\System32\reagentc.exe"
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WriteConsole: ERROR:
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WriteConsole: This stream is n
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cmd.exe /C powercfg /change monitor-timeout-ac 0
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C:\WINDOWS\system32\powercfg.exe powercfg /change monitor-timeout-ac 0
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WriteConsole: Access is denied
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cmd.exe /C powercfg /change monitor-timeout-dc 0
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C:\WINDOWS\system32\powercfg.exe powercfg /change monitor-timeout-dc 0
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cmd.exe /C powercfg /change standby-timeout-ac 0
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C:\WINDOWS\system32\powercfg.exe powercfg /change standby-timeout-ac 0
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cmd.exe /C powercfg /change standby-timeout-dc 0
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C:\WINDOWS\system32\powercfg.exe powercfg /change standby-timeout-dc 0
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cmd.exe /C powercfg /change hibernate-timeout-ac 0
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C:\WINDOWS\system32\powercfg.exe powercfg /change hibernate-timeout-ac 0
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cmd.exe /C powercfg /change hibernate-timeout-dc 0
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C:\WINDOWS\system32\powercfg.exe powercfg /change hibernate-timeout-dc 0
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cmd.exe /C powercfg /hibernate off
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C:\WINDOWS\system32\powercfg.exe powercfg /hibernate off
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