Analysis
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max time kernel
308s -
max time network
1696s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
23-08-2021 11:22
Static task
static1
Behavioral task
behavioral1
Sample
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe
Resource
win10v20210408
General
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Target
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe
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Size
116KB
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MD5
d1c9c12e08c8e2111da989e2318b1c42
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SHA1
d0c7f3c8de28d0fccec9d4925afeb5fa9dd62b5d
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SHA256
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84
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SHA512
152f93308e6d15910e01d77c74bb86284e5929ece91627c1aa82fe5050f7a233e3b27a6c5834110478789d5d845c49775c3473b3ee838488f1cd19c6af17312c
Malware Config
Extracted
C:\gmhb9n-README.txt
http://4to43yp4mng2gdc3jgnep5bt7lkhqvjqiritbv4x2ebj3qun7wz4y2id.onion
Signatures
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Modifies extensions of user files 16 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exedescription ioc process File renamed C:\Users\Admin\Pictures\RevokeInitialize.png => \??\c:\users\admin\pictures\RevokeInitialize.png.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\CompleteSelect.png => \??\c:\users\admin\pictures\CompleteSelect.png.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\FormatShow.tif => \??\c:\users\admin\pictures\FormatShow.tif.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\ImportUninstall.tiff => \??\c:\users\admin\pictures\ImportUninstall.tiff.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\UnlockEdit.crw => \??\c:\users\admin\pictures\UnlockEdit.crw.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\UseLimit.tiff => \??\c:\users\admin\pictures\UseLimit.tiff.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\ConfirmRestore.tif => \??\c:\users\admin\pictures\ConfirmRestore.tif.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\users\admin\pictures\UseLimit.tiff e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\PopUnregister.tif => \??\c:\users\admin\pictures\PopUnregister.tif.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\RevokeMerge.tif => \??\c:\users\admin\pictures\RevokeMerge.tif.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\UseUndo.png => \??\c:\users\admin\pictures\UseUndo.png.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\users\admin\pictures\ImportUninstall.tiff e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\RevokeTest.tif => \??\c:\users\admin\pictures\RevokeTest.tif.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\StopBackup.png => \??\c:\users\admin\pictures\StopBackup.png.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\SubmitUndo.tif => \??\c:\users\admin\pictures\SubmitUndo.tif.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File renamed C:\Users\Admin\Pictures\MoveResolve.raw => \??\c:\users\admin\pictures\MoveResolve.raw.gmhb9n e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exedescription ioc process File opened (read-only) \??\F: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\H: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\K: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\Y: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\S: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\T: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\V: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\W: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\E: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\P: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\Q: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\R: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\X: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\Z: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\O: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\B: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\J: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\L: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\M: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\U: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\D: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\A: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\G: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\I: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened (read-only) \??\N: e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\baq859.bmp" e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe -
Drops file in Program Files directory 12 IoCs
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exedescription ioc process File opened for modification \??\c:\program files\InstallLimit.csv e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\OptimizeSplit.mov e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\ProtectInstall.pub e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\SaveProtect.m4a e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\StepPublish.shtml e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\SubmitDebug.mpeg2 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\ExitGet.tiff e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File created \??\c:\program files (x86)\gmhb9n-README.txt e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\MeasureTrace.sql e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\RenameSubmit.avi e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File opened for modification \??\c:\program files\ResetDisconnect.m1v e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe File created \??\c:\program files\gmhb9n-README.txt e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exepowershell.exepid process 580 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe 580 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe 2764 powershell.exe 2764 powershell.exe 2764 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 580 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe Token: SeDebugPrivilege 2764 powershell.exe Token: SeBackupPrivilege 3656 vssvc.exe Token: SeRestorePrivilege 3656 vssvc.exe Token: SeAuditPrivilege 3656 vssvc.exe Token: SeTakeOwnershipPrivilege 580 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exedescription pid process target process PID 580 wrote to memory of 2764 580 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe powershell.exe PID 580 wrote to memory of 2764 580 e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe"C:\Users\Admin\AppData\Local\Temp\e25eaaac03aa958688cbe950275156169eb4955e145bc9627fcbfb36cd832a84.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:580 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2764
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:1088
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3656
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2764-114-0x0000000000000000-mapping.dmp
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memory/2764-120-0x00000120AEE30000-0x00000120AEE31000-memory.dmpFilesize
4KB
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memory/2764-124-0x00000120AEFE0000-0x00000120AEFE1000-memory.dmpFilesize
4KB
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memory/2764-129-0x0000012092E80000-0x0000012092E82000-memory.dmpFilesize
8KB
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memory/2764-130-0x0000012092E83000-0x0000012092E85000-memory.dmpFilesize
8KB
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memory/2764-136-0x0000012092E86000-0x0000012092E88000-memory.dmpFilesize
8KB