Analysis
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max time kernel
4265086s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
15-01-2022 19:51
Static task
static1
General
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Target
2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe
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Size
324KB
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MD5
7d32d2090a70e3d3334756c107c9b3f4
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SHA1
79e0ab9fdadc83ad1430b04d7e35e48c1b90e89b
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SHA256
2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a
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SHA512
211edd48cb5f33611bfe3cc64bb7619cf478a54e461a5b019cdb4e28682a998f39ef3885b37dd40c2974c9c9da9cb65477fa85dbac79567d5d986d07024294df
Malware Config
Extracted
Family
arkei
Botnet
Default
C2
http://file-file-host4.com/tratata.php
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 1644 created 2480 1644 WerFault.exe 2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe -
Arkei Stealer Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2480-131-0x0000000000800000-0x000000000081C000-memory.dmp family_arkei behavioral1/memory/2480-132-0x0000000000400000-0x0000000000561000-memory.dmp family_arkei -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3724 2480 WerFault.exe 2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe -
Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
MusNotification.exeWerFault.exedescription ioc process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotification.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotification.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
WerFault.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
WerFault.exepid process 3724 WerFault.exe 3724 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
MusNotification.exeWerFault.exedescription pid process Token: SeShutdownPrivilege 3280 MusNotification.exe Token: SeCreatePagefilePrivilege 3280 MusNotification.exe Token: SeRestorePrivilege 3724 WerFault.exe Token: SeBackupPrivilege 3724 WerFault.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
WerFault.exedescription pid process target process PID 1644 wrote to memory of 2480 1644 WerFault.exe 2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe PID 1644 wrote to memory of 2480 1644 WerFault.exe 2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe"C:\Users\Admin\AppData\Local\Temp\2d4c396f289f986d2bce539bdaecdc47c7fe86e7a6cfdd53334e8e6c0285ce1a.exe"1⤵PID:2480
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 5562⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3724
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C:\Windows\system32\MusNotification.exeC:\Windows\system32\MusNotification.exe1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:3280
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2480 -ip 24801⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1644