Analysis Overview
SHA256
bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a
Threat Level: Known bad
The file GandCrab.exe was found to be: Known bad.
Malicious Activity Summary
Gandcrab
Renames multiple (271) files with added filename extension
Drops startup file
Reads user/profile data of web browsers
Checks computer location settings
Enumerates connected drives
Sets desktop wallpaper using registry
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-06 09:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-06 09:07
Reported
2024-05-06 09:10
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Gandcrab
Renames multiple (271) files with added filename extension
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\PQIBTG-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\de3a2747de3a20a96e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Reads user/profile data of web browsers
Enumerates connected drives
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp" | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\de3a2747de3a20a96e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\JoinDismount.mpe | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ReadSkip.aiff | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RedoMeasure.M2V | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\PQIBTG-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\de3a2747de3a20a96e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\UnblockSync.rtf | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\CloseWrite.kix | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\CopyRemove.rle | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\EditCompare.m1v | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\MeasureSubmit.odt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RepairClear.xml | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\SaveReceive.rmi | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\CloseUnprotect.i64 | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\CompleteFind.3gp2 | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\PushClose.aif | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RegisterBlock.ps1 | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RestoreRegister.mov | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RevokeStop.search-ms | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files\PQIBTG-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ClearStep.mp4 | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\OpenDismount.fon | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\UnpublishRestart.ppsm | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1160 wrote to memory of 4540 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1160 wrote to memory of 4540 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1160 wrote to memory of 4540 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\GandCrab.exe
"C:\Users\Admin\AppData\Local\Temp\GandCrab.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1160 -ip 1160
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 1432
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | www.kakaocorp.link | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.53.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 14.173.189.20.in-addr.arpa | udp |
Files
memory/1160-1-0x00000000054D0000-0x00000000055D0000-memory.dmp
memory/1160-2-0x0000000000400000-0x000000000041B000-memory.dmp
F:\$RECYCLE.BIN\S-1-5-21-3906287020-2915474608-1755617787-1000\PQIBTG-MANUAL.txt
| MD5 | 29f798f877b882fb52410a8e55cc1b3e |
| SHA1 | 645fa0880f8b2a4ecacf80eb73dd59ff4df0c1ae |
| SHA256 | 25449c881863f6543590ab5c40dc91f7588d66120e76a6c1e951881c93ebcb44 |
| SHA512 | 32c9b23718790ceeb47be825983625402939511c789546ee30799139259fae2e82ed0a3041c1b8be5afb04b25a0cfa089d8abbd1fb8ee39ff8056ebde0955849 |
memory/1160-700-0x0000000000400000-0x00000000052B3000-memory.dmp
memory/1160-703-0x0000000000400000-0x000000000041B000-memory.dmp
memory/1160-702-0x0000000000400000-0x00000000052B3000-memory.dmp