Analysis
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max time kernel
136s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
27-06-2022 00:08
Static task
static1
Behavioral task
behavioral1
Sample
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe
Resource
win10v2004-20220414-en
General
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Target
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe
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Size
171KB
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MD5
0841db4bef7227c34bc9d8bcbc931410
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SHA1
473d3950f379a4a7c36f799c7e52929b2ff11acb
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SHA256
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992
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SHA512
de06093dd3f330ab55762f67f9bf9827bb751136b47ecb1f5ccd7484a909661c8d8337a533cb34abbf74b8b8e1a25845970639ff66733dd3839046b1c16b0869
Malware Config
Extracted
C:\PTOEC-MANUAL.txt
gandcrab
http://gandcrabmfe6mnef.onion/4cdb78e46fa14b6d
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process File renamed C:\Users\Admin\Pictures\LockWrite.tif => C:\Users\Admin\Pictures\LockWrite.tif.ptoec 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Users\Admin\Pictures\NewClose.tiff 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File renamed C:\Users\Admin\Pictures\NewClose.tiff => C:\Users\Admin\Pictures\NewClose.tiff.ptoec 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File renamed C:\Users\Admin\Pictures\PushSwitch.raw => C:\Users\Admin\Pictures\PushSwitch.raw.ptoec 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File renamed C:\Users\Admin\Pictures\HideWait.png => C:\Users\Admin\Pictures\HideWait.png.ptoec 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File renamed C:\Users\Admin\Pictures\ImportComplete.tif => C:\Users\Admin\Pictures\ImportComplete.tif.ptoec 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Drops startup file 2 IoCs
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\PTOEC-MANUAL.txt 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\6fa14c8e6fa14b6d613.lock 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.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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Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process File opened (read-only) \??\G: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\H: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\F: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\O: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\Q: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\S: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\V: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\W: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\X: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\K: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\E: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\J: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\M: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\P: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\R: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\T: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\U: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\B: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\Y: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\I: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\L: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\N: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\Z: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened (read-only) \??\A: 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp" 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Drops file in Program Files directory 27 IoCs
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process File opened for modification C:\Program Files\AssertRegister.temp 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\CompleteHide.mpp 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\MountLock.ps1xml 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\UnblockClose.html 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\UnregisterWait.MTS 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File created C:\Program Files\PTOEC-MANUAL.txt 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\OpenRead.shtml 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File created C:\Program Files (x86)\6fa14c8e6fa14b6d613.lock 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\AssertOut.otf 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\CompareInvoke.otf 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\PushExport.midi 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\ReceiveOptimize.xps 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\ResizeCopy.WTV 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\ResizeStop.txt 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\RestoreExit.vsw 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\OpenCompare.jpg 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\StepConnect.pot 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\EditConfirm.vst 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\FindExport.pcx 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\GroupShow.xsl 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\UndoJoin.m3u 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\WaitExpand.dxf 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\SelectRedo.doc 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File created C:\Program Files\6fa14c8e6fa14b6d613.lock 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\SuspendUpdate.kix 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File opened for modification C:\Program Files\RequestReceive.html 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe File created C:\Program Files (x86)\PTOEC-MANUAL.txt 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exepid process 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exedescription pid process target process PID 2468 wrote to memory of 4596 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe cmd.exe PID 2468 wrote to memory of 4596 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe cmd.exe PID 2468 wrote to memory of 4596 2468 3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe"C:\Users\Admin\AppData\Local\Temp\3575cc26ec8d3dd669946f9156ace7eaecca470525d6af8402d0688513cd6992.exe"1⤵
- Modifies extensions of user files
- Checks computer location settings
- Drops startup file
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2468-130-0x00000000006D0000-0x00000000006F9000-memory.dmpFilesize
164KB
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memory/2468-131-0x0000000000400000-0x000000000042F000-memory.dmpFilesize
188KB
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memory/2468-132-0x00000000006D0000-0x00000000006F9000-memory.dmpFilesize
164KB
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memory/2468-133-0x0000000000400000-0x000000000042F000-memory.dmpFilesize
188KB
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memory/4596-134-0x0000000000000000-mapping.dmp