Analysis
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max time kernel
186s -
max time network
205s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
28-01-2022 17:59
Static task
static1
Behavioral task
behavioral1
Sample
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe
Resource
win7-en-20211208
General
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Target
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe
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Size
139KB
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MD5
96f38dc9816140fc3f63e540e9d9292e
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SHA1
0415d5a89e15fe9dda8454abec351897adaf866a
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SHA256
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006
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SHA512
8b1ac503d48d27106641fb57040759794b6488c6ba58fb742fd9ab87a6d6e51637b3de04e2ccaf593747d763d34703d957a07c325e9d5ac9b1ac39539e4a0186
Malware Config
Extracted
C:\SXUTYKDCEO-DECRYPT.txt
http://gandcrabmfe6mnef.onion/5e83a91145c16bb0
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity
suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 12 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription ioc process File renamed C:\Users\Admin\Pictures\GrantInvoke.tif => C:\Users\Admin\Pictures\GrantInvoke.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\GroupRegister.tif => C:\Users\Admin\Pictures\GroupRegister.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\OutReset.tif => C:\Users\Admin\Pictures\OutReset.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\TestRename.raw => C:\Users\Admin\Pictures\TestRename.raw.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\ResizeSync.tif => C:\Users\Admin\Pictures\ResizeSync.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Users\Admin\Pictures\SearchUnregister.tiff dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\SearchUnregister.tiff => C:\Users\Admin\Pictures\SearchUnregister.tiff.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\ApproveExport.tif => C:\Users\Admin\Pictures\ApproveExport.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\ExportSelect.tif => C:\Users\Admin\Pictures\ExportSelect.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\FindAdd.tif => C:\Users\Admin\Pictures\FindAdd.tif.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\FormatEnable.crw => C:\Users\Admin\Pictures\FormatEnable.crw.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File renamed C:\Users\Admin\Pictures\ReadGrant.raw => C:\Users\Admin\Pictures\ReadGrant.raw.sxutykdceo dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe -
Drops startup file 2 IoCs
Processes:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\SXUTYKDCEO-DECRYPT.txt dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\45c16c5045c16bba13.lock dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.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:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription ioc process File opened (read-only) \??\Q: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\Z: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\B: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\I: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\J: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\P: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\N: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\X: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\A: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\E: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\F: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\M: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\U: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\W: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\H: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\L: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\O: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\R: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\V: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\Y: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\G: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\K: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\S: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened (read-only) \??\T: dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\pidor.bmp" dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe -
Drops file in Program Files directory 22 IoCs
Processes:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription ioc process File opened for modification C:\Program Files\EnterStop.svg dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\SwitchRegister.mp3 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\SyncCheckpoint.search-ms dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\SyncUninstall.xlsb dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\UnregisterRead.vbe dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\UndoRestore.rtf dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\ShowStep.M2TS dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File created C:\Program Files (x86)\SXUTYKDCEO-DECRYPT.txt dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File created C:\Program Files\SXUTYKDCEO-DECRYPT.txt dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File created C:\Program Files\45c16c5045c16bba13.lock dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\CheckpointShow.WTV dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\CompareImport.inf dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\DismountAdd.tif dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\RemoveConvertTo.wmv dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File created C:\Program Files (x86)\45c16c5045c16bba13.lock dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\RestartRead.rm dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\CheckpointWait.emf dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\ConvertFromShow.jpg dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\DebugOut.sql dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\EnterSearch.M2V dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\FormatSkip.mp4 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe File opened for modification C:\Program Files\PopUnblock.rtf dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.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:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exepid process 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
Processes:
wmic.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1140 wmic.exe Token: SeSecurityPrivilege 1140 wmic.exe Token: SeTakeOwnershipPrivilege 1140 wmic.exe Token: SeLoadDriverPrivilege 1140 wmic.exe Token: SeSystemProfilePrivilege 1140 wmic.exe Token: SeSystemtimePrivilege 1140 wmic.exe Token: SeProfSingleProcessPrivilege 1140 wmic.exe Token: SeIncBasePriorityPrivilege 1140 wmic.exe Token: SeCreatePagefilePrivilege 1140 wmic.exe Token: SeBackupPrivilege 1140 wmic.exe Token: SeRestorePrivilege 1140 wmic.exe Token: SeShutdownPrivilege 1140 wmic.exe Token: SeDebugPrivilege 1140 wmic.exe Token: SeSystemEnvironmentPrivilege 1140 wmic.exe Token: SeRemoteShutdownPrivilege 1140 wmic.exe Token: SeUndockPrivilege 1140 wmic.exe Token: SeManageVolumePrivilege 1140 wmic.exe Token: 33 1140 wmic.exe Token: 34 1140 wmic.exe Token: 35 1140 wmic.exe Token: 36 1140 wmic.exe Token: SeIncreaseQuotaPrivilege 1140 wmic.exe Token: SeSecurityPrivilege 1140 wmic.exe Token: SeTakeOwnershipPrivilege 1140 wmic.exe Token: SeLoadDriverPrivilege 1140 wmic.exe Token: SeSystemProfilePrivilege 1140 wmic.exe Token: SeSystemtimePrivilege 1140 wmic.exe Token: SeProfSingleProcessPrivilege 1140 wmic.exe Token: SeIncBasePriorityPrivilege 1140 wmic.exe Token: SeCreatePagefilePrivilege 1140 wmic.exe Token: SeBackupPrivilege 1140 wmic.exe Token: SeRestorePrivilege 1140 wmic.exe Token: SeShutdownPrivilege 1140 wmic.exe Token: SeDebugPrivilege 1140 wmic.exe Token: SeSystemEnvironmentPrivilege 1140 wmic.exe Token: SeRemoteShutdownPrivilege 1140 wmic.exe Token: SeUndockPrivilege 1140 wmic.exe Token: SeManageVolumePrivilege 1140 wmic.exe Token: 33 1140 wmic.exe Token: 34 1140 wmic.exe Token: 35 1140 wmic.exe Token: 36 1140 wmic.exe Token: SeBackupPrivilege 1992 vssvc.exe Token: SeRestorePrivilege 1992 vssvc.exe Token: SeAuditPrivilege 1992 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exedescription pid process target process PID 1144 wrote to memory of 1140 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe wmic.exe PID 1144 wrote to memory of 1140 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe wmic.exe PID 1144 wrote to memory of 1140 1144 dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe wmic.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe"C:\Users\Admin\AppData\Local\Temp\dbb88de4201933bdb099b21f91786be636b6e4486765f023abd3319300ed0006.exe"1⤵
- Modifies extensions of user files
- 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\wbem\wmic.exe"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken