Analysis Overview
SHA256
bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a
Threat Level: Known bad
The file GandCrab.exe was found to be: Known bad.
Malicious Activity Summary
Gandcrab
Deletes shadow copies
Renames multiple (269) files with added filename extension
Renames multiple (265) files with added filename extension
Reads user/profile data of web browsers
Drops startup file
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
Checks processor information in registry
Suspicious use of WriteProcessMemory
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-06 18:18
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-06 18:18
Reported
2024-05-06 18:20
Platform
win7-20240220-en
Max time kernel
142s
Max time network
122s
Command Line
Signatures
Gandcrab
Deletes shadow copies
Renames multiple (265) files with added filename extension
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-1-5-21-2721934792-624042501-2768869379-1000\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 (x86)\AHBSBPPHF-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\BlockSend.3g2 | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\OutRead.m4a | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ShowNew.ppt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\2cedcdae2cedca406e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\MoveUninstall.kix | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RenameMove.css | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\TestSearch.xht | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files\AHBSBPPHF-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ConvertToOut.emf | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\UninstallSkip.pps | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\GetDisconnect.M2TS | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft SQL Server Compact Edition\2cedcdae2cedca406e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\SkipInvoke.mpeg | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\SubmitUnpublish.odp | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft SQL Server Compact Edition\AHBSBPPHF-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\AHBSBPPHF-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\AHBSBPPHF-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files\2cedcdae2cedca406e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\UnblockSkip.wma | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\WatchRedo.aifc | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\UpdateSave.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\2cedcdae2cedca406e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\EnterProtect.wmx | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\JoinShow.asp | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ReceiveSave.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\2cedcdae2cedca406e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\CompressUndo.rtf | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\DenyUnpublish.bmp | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\MeasureClear.css | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| 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 |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\vssadmin.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 |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2500 wrote to memory of 1712 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2500 wrote to memory of 1712 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2500 wrote to memory of 1712 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2500 wrote to memory of 1712 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1712 wrote to memory of 792 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\vssadmin.exe |
| PID 1712 wrote to memory of 792 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\vssadmin.exe |
| PID 1712 wrote to memory of 792 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\vssadmin.exe |
| PID 1712 wrote to memory of 792 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\vssadmin.exe |
Uses Volume Shadow Copy service COM API
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\vssadmin.exe
vssadmin delete shadows /all /quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.kakaocorp.link | udp |
Files
memory/2500-5-0x0000000000400000-0x00000000052B3000-memory.dmp
F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\AHBSBPPHF-MANUAL.txt
| MD5 | a1e9d9831b553943c73e573f52d4219a |
| SHA1 | 6a0b4e791e374ac8d1702c99d05ffddb004d920f |
| SHA256 | 4cc2b375e3201dfe041ccd34231c0807830f523840d8f6cb557015dc09fea3b3 |
| SHA512 | 092b6318101dd5c8643d037ff09403acff3fedc635312a744fa0edd1ef41584ac2a91f91313dadb38b1ce8a0da186443c7977f2dd1f4403158ea2e64aa2c5896 |
memory/2500-45-0x0000000000400000-0x00000000052B3000-memory.dmp
memory/2500-689-0x0000000000400000-0x00000000052B3000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-06 18:18
Reported
2024-05-06 18:20
Platform
win10v2004-20240419-en
Max time kernel
136s
Max time network
107s
Command Line
Signatures
Gandcrab
Renames multiple (269) files with added filename extension
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\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\VBTQLKEC-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\55252d2455252aca6e.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-1-5-21-2860750803-256193626-1801997576-1000\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\VBTQLKEC-MANUAL.txt | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files\55252d2455252aca6e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\DenyEnter.mhtml | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ImportStart.pot | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\TraceSearch.dxf | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\55252d2455252aca6e.lock | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\CompressEdit.dib | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ConvertPing.vbe | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\PopJoin.bin | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RepairSet.js | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ShowRepair.odp | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\ExpandSkip.eps | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\GroupDeny.mhtml | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\InitializeInvoke.ods | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\NewRename.docx | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\PingBlock.ex_ | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\RevokeResume.vssm | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\DisconnectSet.css | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\GroupResume.rar | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\MergeUnblock.potm | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File opened for modification | C:\Program Files\SubmitRestore.dot | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| File created | C:\Program Files (x86)\VBTQLKEC-MANUAL.txt | 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\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | N/A |
| 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 |
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 4644 wrote to memory of 208 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4644 wrote to memory of 208 | N/A | C:\Users\Admin\AppData\Local\Temp\GandCrab.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4644 wrote to memory of 208 | 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 4644 -ip 4644
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4644 -s 1420
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.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 | 237.197.79.204.in-addr.arpa | udp |
| NL | 23.62.61.72:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.61.62.23.in-addr.arpa | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.kakaocorp.link | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 142.53.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 131.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.251.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| 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 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/4644-1-0x0000000005590000-0x0000000005690000-memory.dmp
memory/4644-2-0x0000000000400000-0x000000000041B000-memory.dmp
C:\$Recycle.Bin\VBTQLKEC-MANUAL.txt
| MD5 | 2212422fce2d32053102d572a7c67921 |
| SHA1 | e7536a10dd1fc1c38368aba04d1505946c741a14 |
| SHA256 | b9de69bff8e97de43506d505fcf1e22d852b09a4ca0781c2bc5f2a736d0655ed |
| SHA512 | a04537e4f552f03883455fe93decf9b560f69241868d60cbe0ee59ac355cdc62edf23d729ee57aef0a9a71d1dd3fb92d48ec62b8408157569cc67e726fee6c9b |
memory/4644-710-0x0000000000400000-0x00000000052B3000-memory.dmp
memory/4644-713-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4644-712-0x0000000000400000-0x00000000052B3000-memory.dmp