Analysis
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max time kernel
118s -
max time network
107s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21-08-2024 20:27
Static task
static1
Behavioral task
behavioral1
Sample
838c81f012a9388d786a10bfa3657110N.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
838c81f012a9388d786a10bfa3657110N.exe
Resource
win10v2004-20240802-en
General
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Target
838c81f012a9388d786a10bfa3657110N.exe
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Size
237KB
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MD5
838c81f012a9388d786a10bfa3657110
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SHA1
858a05a95fbb188747161818357f439f5a27fa88
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SHA256
565c1d57fb729e5c3cc8bf368706d1fcf9ac90c7365fa5e198a67904e9e3a589
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SHA512
33f00f013a18da31ebb0fad32a637f6d906543789b03b3a148de3d8071e47f8f4defbbda9fc0b3c14ed7afa8a3915385e78e84e145998c9d71ae170c9b83780b
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SSDEEP
6144:/A2P27yTAnKGw0hjFhSR/W1nyAJ9v0pMtRCpYQ:/ATuTAnKGwUAWVycQqgj
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 3508 5044 WerFault.exe winver.exe 2312 916 WerFault.exe 838c81f012a9388d786a10bfa3657110N.exe -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
838c81f012a9388d786a10bfa3657110N.exewinver.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 838c81f012a9388d786a10bfa3657110N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe -
Modifies data under HKEY_USERS 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
838c81f012a9388d786a10bfa3657110N.exepid process 916 838c81f012a9388d786a10bfa3657110N.exe 916 838c81f012a9388d786a10bfa3657110N.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
Explorer.EXEdescription pid process Token: SeShutdownPrivilege 3464 Explorer.EXE Token: SeCreatePagefilePrivilege 3464 Explorer.EXE Token: SeShutdownPrivilege 3464 Explorer.EXE Token: SeCreatePagefilePrivilege 3464 Explorer.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
winver.exe838c81f012a9388d786a10bfa3657110N.exepid process 5044 winver.exe 916 838c81f012a9388d786a10bfa3657110N.exe -
Suspicious use of UnmapMainImage 1 IoCs
Processes:
Explorer.EXEpid process 3464 Explorer.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
838c81f012a9388d786a10bfa3657110N.exewinver.exedescription pid process target process PID 916 wrote to memory of 5044 916 838c81f012a9388d786a10bfa3657110N.exe winver.exe PID 916 wrote to memory of 5044 916 838c81f012a9388d786a10bfa3657110N.exe winver.exe PID 916 wrote to memory of 5044 916 838c81f012a9388d786a10bfa3657110N.exe winver.exe PID 916 wrote to memory of 5044 916 838c81f012a9388d786a10bfa3657110N.exe winver.exe PID 5044 wrote to memory of 3464 5044 winver.exe Explorer.EXE PID 916 wrote to memory of 3464 916 838c81f012a9388d786a10bfa3657110N.exe Explorer.EXE PID 916 wrote to memory of 2468 916 838c81f012a9388d786a10bfa3657110N.exe sihost.exe
Processes
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C:\Windows\system32\sihost.exesihost.exe1⤵PID:2468
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3464 -
C:\Users\Admin\AppData\Local\Temp\838c81f012a9388d786a10bfa3657110N.exe"C:\Users\Admin\AppData\Local\Temp\838c81f012a9388d786a10bfa3657110N.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Windows\SysWOW64\winver.exewinver3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5044 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 3164⤵
- Program crash
PID:3508 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 916 -s 9323⤵
- Program crash
PID:2312
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman1⤵
- Modifies data under HKEY_USERS
PID:1388
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5044 -ip 50441⤵PID:3140
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 916 -ip 9161⤵PID:4532