Analysis
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max time kernel
112s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
07-07-2022 20:10
Static task
static1
Behavioral task
behavioral1
Sample
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe
Resource
win10v2004-20220414-en
General
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Target
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe
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Size
98KB
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MD5
eae1d32442fadc2b737837adada39c54
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SHA1
3779ec749f00515e31eb4fff4ae8205f44a6ea80
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SHA256
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a
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SHA512
52151027c9ee32466ac34852ac9eec07a06fedab15309ef3a4d3b4138e39b7856dbb798e3b222a4cab8242532e8066001d785c64856830ee1d902139a7c666f0
Malware Config
Extracted
C:\CKTJOXFSMH-DECRYPT.txt
gandcrab
http://gandcrabmfe6mnef.onion/b7b0a78289b6c66
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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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 5 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process File renamed C:\Users\Admin\Pictures\MergeJoin.tiff => C:\Users\Admin\Pictures\MergeJoin.tiff.cktjoxfsmh 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File renamed C:\Users\Admin\Pictures\RepairResume.png => C:\Users\Admin\Pictures\RepairResume.png.cktjoxfsmh 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File renamed C:\Users\Admin\Pictures\UnregisterStart.raw => C:\Users\Admin\Pictures\UnregisterStart.raw.cktjoxfsmh 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File renamed C:\Users\Admin\Pictures\CloseDisconnect.crw => C:\Users\Admin\Pictures\CloseDisconnect.crw.cktjoxfsmh 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Users\Admin\Pictures\MergeJoin.tiff 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe -
Drops startup file 2 IoCs
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\CKTJOXFSMH-DECRYPT.txt 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\289b6b85289b6c6720.lock 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.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:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process File opened (read-only) \??\B: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\F: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\L: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\P: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\T: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\U: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\A: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\J: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\O: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\Z: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\G: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\M: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\Q: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\H: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\I: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\K: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\N: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\R: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\S: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\V: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\W: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\E: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\Y: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened (read-only) \??\X: 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp" 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe -
Drops file in Program Files directory 28 IoCs
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process File opened for modification C:\Program Files\StepRedo.3gp2 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\BackupAdd.DVR 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\CompressConvertFrom.txt 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\PublishSubmit.ods 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ReceiveDebug.mp3 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ResolveTrace.rm 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File created C:\Program Files (x86)\CKTJOXFSMH-DECRYPT.txt 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File created C:\Program Files\CKTJOXFSMH-DECRYPT.txt 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ExpandProtect.ttf 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\PublishUnlock.midi 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\WriteDismount.scf 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\AddSave.edrwx 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\NewCompress.mpeg3 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ShowCopy.js 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\DismountEnable.zip 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\StartSuspend.xhtml 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\UndoPop.wax 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File created C:\Program Files (x86)\289b6b85289b6c6720.lock 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ClearUnpublish.mpe 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ExpandUpdate.png 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\OpenDismount.vssx 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ApproveCompress.rle 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File created C:\Program Files\289b6b85289b6c6720.lock 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ReceiveConfirm.xltx 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\UninstallCheckpoint.vdx 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\BlockEnable.au3 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\ConvertToOpen.ADTS 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe File opened for modification C:\Program Files\RemoveStep.avi 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.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:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exepid process 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
Processes:
wmic.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 3492 wmic.exe Token: SeSecurityPrivilege 3492 wmic.exe Token: SeTakeOwnershipPrivilege 3492 wmic.exe Token: SeLoadDriverPrivilege 3492 wmic.exe Token: SeSystemProfilePrivilege 3492 wmic.exe Token: SeSystemtimePrivilege 3492 wmic.exe Token: SeProfSingleProcessPrivilege 3492 wmic.exe Token: SeIncBasePriorityPrivilege 3492 wmic.exe Token: SeCreatePagefilePrivilege 3492 wmic.exe Token: SeBackupPrivilege 3492 wmic.exe Token: SeRestorePrivilege 3492 wmic.exe Token: SeShutdownPrivilege 3492 wmic.exe Token: SeDebugPrivilege 3492 wmic.exe Token: SeSystemEnvironmentPrivilege 3492 wmic.exe Token: SeRemoteShutdownPrivilege 3492 wmic.exe Token: SeUndockPrivilege 3492 wmic.exe Token: SeManageVolumePrivilege 3492 wmic.exe Token: 33 3492 wmic.exe Token: 34 3492 wmic.exe Token: 35 3492 wmic.exe Token: 36 3492 wmic.exe Token: SeIncreaseQuotaPrivilege 3492 wmic.exe Token: SeSecurityPrivilege 3492 wmic.exe Token: SeTakeOwnershipPrivilege 3492 wmic.exe Token: SeLoadDriverPrivilege 3492 wmic.exe Token: SeSystemProfilePrivilege 3492 wmic.exe Token: SeSystemtimePrivilege 3492 wmic.exe Token: SeProfSingleProcessPrivilege 3492 wmic.exe Token: SeIncBasePriorityPrivilege 3492 wmic.exe Token: SeCreatePagefilePrivilege 3492 wmic.exe Token: SeBackupPrivilege 3492 wmic.exe Token: SeRestorePrivilege 3492 wmic.exe Token: SeShutdownPrivilege 3492 wmic.exe Token: SeDebugPrivilege 3492 wmic.exe Token: SeSystemEnvironmentPrivilege 3492 wmic.exe Token: SeRemoteShutdownPrivilege 3492 wmic.exe Token: SeUndockPrivilege 3492 wmic.exe Token: SeManageVolumePrivilege 3492 wmic.exe Token: 33 3492 wmic.exe Token: 34 3492 wmic.exe Token: 35 3492 wmic.exe Token: 36 3492 wmic.exe Token: SeBackupPrivilege 3468 vssvc.exe Token: SeRestorePrivilege 3468 vssvc.exe Token: SeAuditPrivilege 3468 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exedescription pid process target process PID 3456 wrote to memory of 3492 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe wmic.exe PID 3456 wrote to memory of 3492 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe wmic.exe PID 3456 wrote to memory of 3492 3456 2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe wmic.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe"C:\Users\Admin\AppData\Local\Temp\2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.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\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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3492-130-0x0000000000000000-mapping.dmp