Analysis
- max time kernel
149s - max time network
146s - 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, 12:18
Behavioral task
behavioral1
Sample
tmpnygu4mno.exe
Resource
win10ltsc2021-20260513-en
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpnygu4mno.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmpnygu4mno.exe
- Size 45KB
- Sample260522-pg1hdads9t
- SHA256 c109ab2e088da970fb3765903a206e86e518db06cc545e3ced8381e784757078
- MD5 eaa279d72a30f81655b9dbf0fce28310
- SHA1 ef9b8b5fd096ac9798451cf7ba7ceb014a2df150
- SHA512 4e90dcc73a06a24dfc417a758de0c25e2d3bcc07b8a0d63693a0964017b291d26d9010ff144896ee290bda10b58a729c8de7972f033c7ca1991b413387bda820
- SSDEEP 768:9hP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2V:/sWE9N5dFu53dsniQaB/xZ14n7zIF+q5
- TLSH T1E523F1DEEA177C6AF4B38E3D63030B354612AA2175AEE7571861D2DD2C31364CE41B2A
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 552 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-540052884-2969440504-464782435-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\88785B04 = "C:\\Users\\Admin\\AppData\\Roaming\\88785B04\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/4132-0-0x0000000000400000-0x000000000041D000-memory.dmp upx behavioral2/files/0x000800000002453e-20.dat upx behavioral2/memory/552-22-0x0000000000400000-0x000000000041D000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 4688 1436 WerFault.exe 88 - System Location Discovery: System Language Discovery 1 TTPs 3 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 tmpnygu4mno.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bin.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1436 winver.exe 1436 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3304 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 38 IoCs
description pid Process Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE Token: SeShutdownPrivilege 3304 Explorer.EXE Token: SeCreatePagefilePrivilege 3304 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1436 winver.exe - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3304 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4132 wrote to memory of 1436 4132 tmpnygu4mno.exe 88 PID 1436 wrote to memory of 3304 1436 winver.exe 55 PID 3304 wrote to memory of 3592 3304 Explorer.EXE PID 3304 wrote to memory of 3592 3304 Explorer.EXE PID 3592 wrote to memory of 552 3592 Process not Found 93 PID 3592 wrote to memory of 552 3592 Process not Found 93 PID 1436 wrote to memory of 2264 1436 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2264
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3304 -
C:\Users\Admin\AppData\Local\Temp\tmpnygu4mno.exe"C:\Users\Admin\AppData\Local\Temp\tmpnygu4mno.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4132 -
C:\Windows\SysWOW64\winver.exewinver3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1436 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 3564⤵
- Program crash
PID:4688
-
-
-
-
C:\Users\Admin\AppData\Roaming\88785B04\bin.exeC:\Users\Admin\AppData\Roaming\88785B04\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:552
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1436 -ip 14361⤵PID:1796
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\88785B04\bin.exe
- Size 45KB
- SHA256 4c85059a2a40e7a787631ba0c0e9e4c45c50067c76340a0c76b053e1e27c959e
- MD5 2b1d72cab1e9e227303e1a1c620002ce
- SHA1 4eeed50b333461c41af57185c9c0ef168717e848
- SHA512 ae87c25f78ecfe76f60b1105ca21dc607ab610065063ca5ff46a649063a23c3c39c94b4b4ab9dde1497f7c94e7a660708ddad9ad81b6a6c680bd181517210b7e
- SSDEEP 768:nhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2V:hsWE9N5dFu53dsniQaB/xZ14n7zIF+q5
- TLSH T11E23F1DEEA177C6AF4B38E3D63030B354612AA3175AEE7571861D2DD2C31364CE41B2A
- MD5 SHA1 SHA512 SSDEEP TLSH