Analysis
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max time kernel
141s -
max time network
122s -
platform
windows10-2004_x64 -
resource
win10v2004-20240910-en -
resource tags
arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system -
submitted
28-09-2024 16:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe
Resource
win10v2004-20240910-en
General
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Target
2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe
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Size
97KB
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MD5
bc5c8cbbe66ca3ea05604509d334e617
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SHA1
084ed6abd5ded9948bf7d0a41b3c99cb35208426
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SHA256
79300246f195358830de5994005b0398924482e774a3244748c3b71d98b8ebaf
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SHA512
47fbbf0479247c0fb94f1644ebd0c170dea89d29349181a125b4afbd5eb39367951b35a9e225dc5b790a9384e359b2fc96eec0853fb0156c4b87fa2cf8ce94f0
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SSDEEP
1536:ufuwLvvKeqM0TRl79lvhWAwVl5OpqIyedIVjC3E8dzcrHuTcxLUllPR:umwLXnqM0Nl795twDIyeeBG+HUiUj
Malware Config
Extracted
C:\$Recycle.Bin\S-1-5-21-2629364133-3182087385-364449604-1000\LKVPGRA-MANUAL.txt
gandcrab
http://gandcrabmfe6mnef.onion/135277f19ff03ded
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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Renames multiple (311) 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-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
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Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\LKVPGRA-MANUAL.txt 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\9ff03a009ff03de2114.lock 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Reads user/profile data of web browsers 3 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) \??\I: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\J: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\L: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\M: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\H: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\E: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\N: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\O: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\U: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\W: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\Y: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\Z: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\A: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\K: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\T: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\V: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\X: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\G: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\P: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\Q: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\R: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\S: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened (read-only) \??\B: 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp" 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Drops file in Program Files directory 28 IoCs
description ioc Process File opened for modification C:\Program Files\DenyGrant.dib 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\DenyUnblock.tiff 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\PingRename.vst 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\RestartUnregister.dwfx 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\CompleteDebug.emf 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\DisconnectRead.txt 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File created C:\Program Files (x86)\LKVPGRA-MANUAL.txt 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\InitializeJoin.mpe 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\ResizeImport.inf 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\SendCompare.dwfx 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\UseDeny.asx 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\WatchNew.mpeg 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File created C:\Program Files\9ff03a009ff03de2114.lock 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\EnableNew.temp 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\PopJoin.aiff 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\UnpublishInstall.avi 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\UnregisterWait.3gp 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File created C:\Program Files\LKVPGRA-MANUAL.txt 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\ApproveCompare.3g2 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\TraceStop.docx 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File created C:\Program Files (x86)\9ff03a009ff03de2114.lock 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\PingPublish.wmf 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\StartMove.DVR 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\ConnectSuspend.svg 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\MoveConvertTo.zip 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\PopStep.emf 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\ProtectTest.ogg 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe File opened for modification C:\Program Files\AssertEdit.mp2v 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1044 wrote to memory of 1036 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe 96 PID 1044 wrote to memory of 1036 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe 96 PID 1044 wrote to memory of 1036 1044 2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-28_bc5c8cbbe66ca3ea05604509d334e617_gandcrab.exe"1⤵
- Checks computer location settings
- Drops startup file
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1044 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet2⤵
- System Location Discovery: System Language Discovery
PID:1036
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
8KB
MD5ca9f0688fb8d115cd24fef94a463fd9b
SHA1a9c15e81ab32fb5737c115b0a3163db618a73ccd
SHA25656c641f65ae8fc44637ddf1530eaec6a97dc07159b2b099f4932a23feec6118c
SHA51264dc536c1147997655eb35cc0ec9d81041f3903c5a96d2e61abf206803b73440c33b36c16ec87d54fb93cbb0df39709b0b94c16621469fc59d112cf3189a379e