Analysis
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max time kernel
171s -
max time network
155s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
30-01-2022 08:03
Static task
static1
Behavioral task
behavioral1
Sample
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe
Resource
win10-en-20211208
General
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Target
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe
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Size
166KB
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MD5
e95162f6cffa1a72a495a8edc11ee51b
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SHA1
ecea28ecbcb64cadccc161e7e864c516f7b96523
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SHA256
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de
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SHA512
65b5f90c9f0f9bdee323554cbc1d5d2869268af8e181e75a6d872e396537ad3b4021635a8d0236e89c3b81f00c502931fd884e49c9283bccc1a6c82426bcc440
Malware Config
Extracted
C:\33394668-readme.txt
ryuk
https://www.coveware.com/blog/2019/7/15/ransomware-amounts-rise-3x-in-q2-as-ryuk-amp-sodinokibi-spread
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/1D79EC7A3E0A04D9
http://decryptor.cc/1D79EC7A3E0A04D9
https://filehippo.com/download_tor_browser_for_windows/
Signatures
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exedescription ioc process File renamed C:\Users\Admin\Pictures\InvokeFormat.crw => \??\c:\users\admin\pictures\InvokeFormat.crw.33394668 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File renamed C:\Users\Admin\Pictures\PublishInstall.png => \??\c:\users\admin\pictures\PublishInstall.png.33394668 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exedescription ioc process File opened (read-only) \??\K: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\L: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\T: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\V: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\X: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\E: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\G: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\M: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\O: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\Q: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\S: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\Y: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\F: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\J: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\R: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\W: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\B: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\H: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\I: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\N: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\P: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\U: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\Z: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened (read-only) \??\A: 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe -
Drops file in Program Files directory 28 IoCs
Processes:
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exedescription ioc process File opened for modification \??\c:\program files\ConvertToAdd.tif 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\InstallPublish.xla 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\InvokeOpen.ADTS 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\ProtectRequest.xlsb 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\SubmitReset.rtf 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\ExpandPublish.dot 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\SendFind.tmp 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File created \??\c:\program files (x86)\33394668-readme.txt 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\MeasureStart.scf 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\RevokeEnter.tif 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\SetImport.eps 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\UseMerge.mhtml 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\BackupPop.jpg 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\ExitAssert.xml 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\StartDismount.ini 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File created \??\c:\program files\33394668-readme.txt 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\ConfirmCompress.odt 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\DebugConvertFrom.pdf 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\EditDismount.mhtml 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\SyncInitialize.mht 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\TestInvoke.ttc 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\UninstallConvertFrom.kix 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\CloseRename.m3u 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\FindPing.mp2v 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\FindProtect.docm 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\LimitShow.mid 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\ProtectStep.jtx 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe File opened for modification \??\c:\program files\SkipRemove.pptx 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exepowershell.exepid process 3592 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe 3592 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe 4524 powershell.exe 4524 powershell.exe 4524 powershell.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 3592 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe Token: SeDebugPrivilege 4524 powershell.exe Token: SeBackupPrivilege 1156 vssvc.exe Token: SeRestorePrivilege 1156 vssvc.exe Token: SeAuditPrivilege 1156 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exedescription pid process target process PID 3592 wrote to memory of 4524 3592 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe powershell.exe PID 3592 wrote to memory of 4524 3592 0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe"C:\Users\Admin\AppData\Local\Temp\0fc141d6bb7eb031915cf916e92df0d8baa18047ddb4fc0be7653b9a7d6d31de.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵
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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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memory/4524-123-0x0000015920E30000-0x0000015920E52000-memory.dmpFilesize
136KB
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memory/4524-128-0x000001593B240000-0x000001593B2B6000-memory.dmpFilesize
472KB
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memory/4524-136-0x00000159390E3000-0x00000159390E5000-memory.dmpFilesize
8KB
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memory/4524-135-0x00000159390E0000-0x00000159390E2000-memory.dmpFilesize
8KB