Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
22/05/2026, 11:32
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
tmpxnk8u207.exe
Resource
win10ltsc2021-20260513-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpxnk8u207.exe
Resource
win10v2004-20260513-en
9 signatures
150 seconds
Behavioral task
behavioral3
Sample
tmpxnk8u207.exe
Resource
win11-20260513-en
9 signatures
150 seconds
General
- Target tmpxnk8u207.exe
- Size 237KB
- Sample260522-nnhepsct3t
- SHA256 88411957bd451e47c79ccb45655e419b62bbcb997ab0af512fa8709cf2549ed6
- MD5 5e9d42101f018ed8b7b91155a4a77448
- SHA1 63e87d927438b4bce1f397090759b02ce9ec14c0
- SHA512 67730fac43a5a1fb0458b17794297054e0d7e5c36a635b0303061cf5223fe1e4b61f8fc1a8227482a6198579cb3ef46287872ab081374b9642f71769dd7e1b9b
- SSDEEP 6144:4A2P27yTAnKGw0hjFhSR/W1nyAJ9v0pMtRCpYQ:4ATuTAnKGwUAWVycQqgj
- TLSH T101346A21A7D0C437F5B213F448F652BAA5397DA16B7490CB62C2F6EA0A346D4BC32357
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10
Malware Config
Signatures
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 2 IoCs
pid pid_target Process procid_target 1820 1500 WerFault.exe 103 1976 4512 WerFault.exe 83 - 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmpxnk8u207.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe - Modifies data under HKEY_USERS 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\27\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" svchost.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3248 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeShutdownPrivilege 3248 Explorer.EXE Token: SeCreatePagefilePrivilege 3248 Explorer.EXE Token: SeShutdownPrivilege 3248 Explorer.EXE Token: SeCreatePagefilePrivilege 3248 Explorer.EXE Token: SeShutdownPrivilege 3248 Explorer.EXE Token: SeCreatePagefilePrivilege 3248 Explorer.EXE Token: SeShutdownPrivilege 3248 Explorer.EXE Token: SeCreatePagefilePrivilege 3248 Explorer.EXE - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1500 winver.exe 4512 tmpxnk8u207.exe - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3248 Explorer.EXE - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4512 wrote to memory of 1500 4512 tmpxnk8u207.exe 103 PID 1500 wrote to memory of 3248 1500 winver.exe 56 PID 4512 wrote to memory of 3248 4512 tmpxnk8u207.exe 56
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3248 -
C:\Users\Admin\AppData\Local\Temp\tmpxnk8u207.exe"C:\Users\Admin\AppData\Local\Temp\tmpxnk8u207.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4512 -
C:\Windows\SysWOW64\winver.exewinver3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1500 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1500 -s 3004⤵
- Program crash
PID:1820
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 8603⤵
- Program crash
PID:1976
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman1⤵
- Modifies data under HKEY_USERS
PID:3680
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1500 -ip 15001⤵PID:4856
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4512 -ip 45121⤵PID:1668