Analysis
-
max time kernel
150s -
max time network
54s -
platform
windows10-1703_x64 -
resource
win10-20220901-en -
resource tags
arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system -
submitted
09-02-2023 12:34
Static task
static1
Behavioral task
behavioral1
Sample
Contract.lnk
Resource
win10-20220901-en
Behavioral task
behavioral2
Sample
publish/eardrum.dll
Resource
win10-20220812-en
Behavioral task
behavioral3
Sample
publish/overawesBets.vbs
Resource
win10-20220901-en
Behavioral task
behavioral4
Sample
publish/supernumerariesUnlearned.cmd
Resource
win10-20220812-en
General
-
Target
Contract.lnk
-
Size
1KB
-
MD5
cac85747caa16dacc64840fef1dbacd7
-
SHA1
9f66be46a382c1408e097327078d0eec771a4ea5
-
SHA256
436d64ee09b0489cbf5231a015de1f8cb5e985045c6db6f94fed27aa0e6db194
-
SHA512
087c496bfcd9e145d402157638c8c83e6abb21cf5441cbea81466a6e3cb7c233ebaf5da9d42e9512d23ff56bb391c1bea323dd7adedb5da63f054059c14f3510
Malware Config
Signatures
-
Drops file in Windows directory 2 IoCs
Processes:
taskmgr.exedescription ioc process File created C:\Windows\rescache\_merged\4183903823\810424605.pri taskmgr.exe File created C:\Windows\rescache\_merged\1601268389\3877292338.pri taskmgr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 taskmgr.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString taskmgr.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
taskmgr.exepid process 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
taskmgr.exepid process 4896 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
taskmgr.exedescription pid process Token: SeDebugPrivilege 4896 taskmgr.exe Token: SeSystemProfilePrivilege 4896 taskmgr.exe Token: SeCreateGlobalPrivilege 4896 taskmgr.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
Processes:
taskmgr.exepid process 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe -
Suspicious use of SendNotifyMessage 64 IoCs
Processes:
taskmgr.exepid process 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe 4896 taskmgr.exe
Processes
-
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Contract.lnk1⤵
-
C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵