Analysis
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max time kernel
141s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
06-05-2024 01:59
Static task
static1
Behavioral task
behavioral1
Sample
1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe
Resource
win10v2004-20240419-en
General
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Target
1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe
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Size
645KB
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MD5
1a3ae8198cd91f4e8c783e1c9be8d153
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SHA1
3b362ed11730e4b08a6943726b1efb51ec651891
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SHA256
21b57732a3ad05f6fd016725d55c6cd59fe733b30d4b04bc2719d14d29336d6b
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SHA512
6eb87ea2ce264bdc8bbb8a790f0e88299853f5690f7aa9c354eb51049c721a939263ba84aed41162ded917fe0626b1fa8d8136a4797cee81f859a5e823a6f830
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SSDEEP
12288:49vWzeRcl7cJhybXuQope9pLSz8nTK9Tq4Dg6WeUlXO/RyZ7:49qGydop21SYnTK9TSl+EZ7
Malware Config
Extracted
F:\$RECYCLE.BIN\S-1-5-21-2818691465-3043947619-2475182763-1000\EYNIPFCTA-DECRYPT.txt
http://gandcrabmfe6mnef.onion/eaf26a12345f3347
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (253) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\EYNIPFCTA-DECRYPT.txt 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\345f34aa345f33446e.lock 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.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 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\P: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\Z: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\W: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\I: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\J: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\K: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\L: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\R: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\T: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\U: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\V: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\A: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\B: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\E: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\G: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\O: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\Q: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\S: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\H: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\M: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\N: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\X: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened (read-only) \??\Y: 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp" 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe -
Drops file in Program Files directory 16 IoCs
description ioc Process File opened for modification C:\Program Files\RedoMeasure.pdf 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File created C:\Program Files (x86)\345f34aa345f33446e.lock 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File created C:\Program Files\EYNIPFCTA-DECRYPT.txt 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\CompressTest.dot 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\OpenFind.mp2 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\ReadSubmit.DVR 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\SelectMerge.mpg 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File created C:\Program Files (x86)\EYNIPFCTA-DECRYPT.txt 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\AddWrite.cr2 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\CompareFormat.potx 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\SearchJoin.nfo 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\TraceWatch.bmp 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\ApproveDebug.pdf 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\DismountRepair.hta 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File opened for modification C:\Program Files\GrantMerge.wmf 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe File created C:\Program Files\345f34aa345f33446e.lock 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 3172 wmic.exe Token: SeSecurityPrivilege 3172 wmic.exe Token: SeTakeOwnershipPrivilege 3172 wmic.exe Token: SeLoadDriverPrivilege 3172 wmic.exe Token: SeSystemProfilePrivilege 3172 wmic.exe Token: SeSystemtimePrivilege 3172 wmic.exe Token: SeProfSingleProcessPrivilege 3172 wmic.exe Token: SeIncBasePriorityPrivilege 3172 wmic.exe Token: SeCreatePagefilePrivilege 3172 wmic.exe Token: SeBackupPrivilege 3172 wmic.exe Token: SeRestorePrivilege 3172 wmic.exe Token: SeShutdownPrivilege 3172 wmic.exe Token: SeDebugPrivilege 3172 wmic.exe Token: SeSystemEnvironmentPrivilege 3172 wmic.exe Token: SeRemoteShutdownPrivilege 3172 wmic.exe Token: SeUndockPrivilege 3172 wmic.exe Token: SeManageVolumePrivilege 3172 wmic.exe Token: 33 3172 wmic.exe Token: 34 3172 wmic.exe Token: 35 3172 wmic.exe Token: 36 3172 wmic.exe Token: SeIncreaseQuotaPrivilege 3172 wmic.exe Token: SeSecurityPrivilege 3172 wmic.exe Token: SeTakeOwnershipPrivilege 3172 wmic.exe Token: SeLoadDriverPrivilege 3172 wmic.exe Token: SeSystemProfilePrivilege 3172 wmic.exe Token: SeSystemtimePrivilege 3172 wmic.exe Token: SeProfSingleProcessPrivilege 3172 wmic.exe Token: SeIncBasePriorityPrivilege 3172 wmic.exe Token: SeCreatePagefilePrivilege 3172 wmic.exe Token: SeBackupPrivilege 3172 wmic.exe Token: SeRestorePrivilege 3172 wmic.exe Token: SeShutdownPrivilege 3172 wmic.exe Token: SeDebugPrivilege 3172 wmic.exe Token: SeSystemEnvironmentPrivilege 3172 wmic.exe Token: SeRemoteShutdownPrivilege 3172 wmic.exe Token: SeUndockPrivilege 3172 wmic.exe Token: SeManageVolumePrivilege 3172 wmic.exe Token: 33 3172 wmic.exe Token: 34 3172 wmic.exe Token: 35 3172 wmic.exe Token: 36 3172 wmic.exe Token: SeBackupPrivilege 1020 vssvc.exe Token: SeRestorePrivilege 1020 vssvc.exe Token: SeAuditPrivilege 1020 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1888 wrote to memory of 3172 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 100 PID 1888 wrote to memory of 3172 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 100 PID 1888 wrote to memory of 3172 1888 1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe 100 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe"1⤵
- 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
PID:1888 -
C:\Windows\SysWOW64\wbem\wmic.exe"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3172
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1020
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
8KB
MD5dcbfe7316dc1bb129b5840d0f9f90ae2
SHA1de104aa938ee98841ef1b0048919cee1420969c7
SHA256aad5c17058e2ef432584e8f7a9e617ba16e4d4ae48be84d6b46c0ee35d64e213
SHA5123a4490a3818a3a74f7f9e2278d869b019e5db0e7ef0f8d265752fad0b021f1441aa9383c3614d24290122db9228f1eb5f093adc557b1e1a97afb9395e1234c4b