Analysis
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max time kernel
139s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
03-07-2022 17:31
Static task
static1
Behavioral task
behavioral1
Sample
sample.exe
Resource
win7-20220414-en
windows7_x64
0 signatures
0 seconds
General
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Target
sample.exe
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Size
183KB
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MD5
07fadb006486953439ce0092651fd7a6
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SHA1
e42431d37561cc695de03b85e8e99c9e31321742
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SHA256
d77378dcc42b912e514d3bd4466cdda050dda9b57799a6c97f70e8489dd8c8d0
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SHA512
5b09a07371bb5350b22c78aa3e7e673ba61ce72a964e072749a4633e2c15f416c05953cc6e6f6c586df010aa7f2c9c0ab87a014e4f732e5fdb2d58778a1fb437
Malware Config
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity
suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity
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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 3 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\CompleteExport.png => C:\Users\Admin\Pictures\CompleteExport.png.ehiai sample.exe File renamed C:\Users\Admin\Pictures\ConvertFromRemove.raw => C:\Users\Admin\Pictures\ConvertFromRemove.raw.ehiai sample.exe File renamed C:\Users\Admin\Pictures\SetPing.crw => C:\Users\Admin\Pictures\SetPing.crw.ehiai sample.exe -
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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation sample.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\EHIAI-DECRYPT.html sample.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\681abc9e681abb7c7b.lock sample.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.
description ioc Process File opened (read-only) \??\B: sample.exe File opened (read-only) \??\H: sample.exe File opened (read-only) \??\O: sample.exe File opened (read-only) \??\P: sample.exe File opened (read-only) \??\E: sample.exe File opened (read-only) \??\G: sample.exe File opened (read-only) \??\J: sample.exe File opened (read-only) \??\S: sample.exe File opened (read-only) \??\F: sample.exe File opened (read-only) \??\I: sample.exe File opened (read-only) \??\N: sample.exe File opened (read-only) \??\Q: sample.exe File opened (read-only) \??\R: sample.exe File opened (read-only) \??\X: sample.exe File opened (read-only) \??\Z: sample.exe File opened (read-only) \??\W: sample.exe File opened (read-only) \??\A: sample.exe File opened (read-only) \??\K: sample.exe File opened (read-only) \??\L: sample.exe File opened (read-only) \??\M: sample.exe File opened (read-only) \??\T: sample.exe File opened (read-only) \??\U: sample.exe File opened (read-only) \??\V: sample.exe File opened (read-only) \??\Y: sample.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description 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\\\\pidor.bmp" sample.exe -
Drops file in Program Files directory 32 IoCs
description ioc Process File opened for modification C:\Program Files\OpenUnpublish.svgz sample.exe File opened for modification C:\Program Files\UnlockCopy.pptx sample.exe File opened for modification C:\Program Files\UnregisterStep.aif sample.exe File opened for modification C:\Program Files\EnableDeny.asf sample.exe File opened for modification C:\Program Files\ExpandDismount.dxf sample.exe File opened for modification C:\Program Files\ExitHide.vstx sample.exe File opened for modification C:\Program Files\ExitUnblock.vdx sample.exe File opened for modification C:\Program Files\FormatRepair.mpp sample.exe File opened for modification C:\Program Files\ImportSubmit.3gp2 sample.exe File opened for modification C:\Program Files\OutSplit.temp sample.exe File opened for modification C:\Program Files\SplitCompress.mp2v sample.exe File created C:\Program Files\EHIAI-DECRYPT.html sample.exe File opened for modification C:\Program Files\DebugSubmit.crw sample.exe File opened for modification C:\Program Files\SyncDisable.mov sample.exe File opened for modification C:\Program Files\PublishPop.zip sample.exe File opened for modification C:\Program Files\PopUnregister.otf sample.exe File opened for modification C:\Program Files\ProtectDebug.jpg sample.exe File opened for modification C:\Program Files\ResolveWrite.clr sample.exe File opened for modification C:\Program Files\CopyPublish.wvx sample.exe File opened for modification C:\Program Files\OpenConnect.xltx sample.exe File opened for modification C:\Program Files\PopSend.MTS sample.exe File opened for modification C:\Program Files\UseCheckpoint.bmp sample.exe File opened for modification C:\Program Files\WaitApprove.wdp sample.exe File opened for modification C:\Program Files\WriteUninstall.aiff sample.exe File created C:\Program Files (x86)\681abc9e681abb7c7b.lock sample.exe File created C:\Program Files\681abc9e681abb7c7b.lock sample.exe File opened for modification C:\Program Files\UninstallJoin.rmi sample.exe File opened for modification C:\Program Files\RestartCompare.jfif sample.exe File opened for modification C:\Program Files\RepairRestart.tmp sample.exe File created C:\Program Files (x86)\EHIAI-DECRYPT.html sample.exe File opened for modification C:\Program Files\InitializeLimit.mp4v sample.exe File opened for modification C:\Program Files\MountExpand.rar sample.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.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 sample.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString sample.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier sample.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 sample.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 sample.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2540 sample.exe 2540 sample.exe 2540 sample.exe 2540 sample.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4500 wmic.exe Token: SeSecurityPrivilege 4500 wmic.exe Token: SeTakeOwnershipPrivilege 4500 wmic.exe Token: SeLoadDriverPrivilege 4500 wmic.exe Token: SeSystemProfilePrivilege 4500 wmic.exe Token: SeSystemtimePrivilege 4500 wmic.exe Token: SeProfSingleProcessPrivilege 4500 wmic.exe Token: SeIncBasePriorityPrivilege 4500 wmic.exe Token: SeCreatePagefilePrivilege 4500 wmic.exe Token: SeBackupPrivilege 4500 wmic.exe Token: SeRestorePrivilege 4500 wmic.exe Token: SeShutdownPrivilege 4500 wmic.exe Token: SeDebugPrivilege 4500 wmic.exe Token: SeSystemEnvironmentPrivilege 4500 wmic.exe Token: SeRemoteShutdownPrivilege 4500 wmic.exe Token: SeUndockPrivilege 4500 wmic.exe Token: SeManageVolumePrivilege 4500 wmic.exe Token: 33 4500 wmic.exe Token: 34 4500 wmic.exe Token: 35 4500 wmic.exe Token: 36 4500 wmic.exe Token: SeIncreaseQuotaPrivilege 4500 wmic.exe Token: SeSecurityPrivilege 4500 wmic.exe Token: SeTakeOwnershipPrivilege 4500 wmic.exe Token: SeLoadDriverPrivilege 4500 wmic.exe Token: SeSystemProfilePrivilege 4500 wmic.exe Token: SeSystemtimePrivilege 4500 wmic.exe Token: SeProfSingleProcessPrivilege 4500 wmic.exe Token: SeIncBasePriorityPrivilege 4500 wmic.exe Token: SeCreatePagefilePrivilege 4500 wmic.exe Token: SeBackupPrivilege 4500 wmic.exe Token: SeRestorePrivilege 4500 wmic.exe Token: SeShutdownPrivilege 4500 wmic.exe Token: SeDebugPrivilege 4500 wmic.exe Token: SeSystemEnvironmentPrivilege 4500 wmic.exe Token: SeRemoteShutdownPrivilege 4500 wmic.exe Token: SeUndockPrivilege 4500 wmic.exe Token: SeManageVolumePrivilege 4500 wmic.exe Token: 33 4500 wmic.exe Token: 34 4500 wmic.exe Token: 35 4500 wmic.exe Token: 36 4500 wmic.exe Token: SeBackupPrivilege 2464 vssvc.exe Token: SeRestorePrivilege 2464 vssvc.exe Token: SeAuditPrivilege 2464 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2540 wrote to memory of 4500 2540 sample.exe 82 PID 2540 wrote to memory of 4500 2540 sample.exe 82 PID 2540 wrote to memory of 4500 2540 sample.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\sample.exe"C:\Users\Admin\AppData\Local\Temp\sample.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
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2540 -
C:\Windows\SysWOW64\wbem\wmic.exe"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4500
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2464