Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
25/05/2026, 22:41
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
tmp3o8k22ad.exe
Resource
win10ltsc2021-20260513-en
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmp3o8k22ad.exe
Resource
win10v2004-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral3
Sample
tmp3o8k22ad.exe
Resource
win11-20260513-en
11 signatures
150 seconds
General
- Target tmp3o8k22ad.exe
- Size 88KB
- Sample260525-2mcdysbt3x
- SHA256 b9295f41ab00fd6467658d0b7e1e4813df06bcb4d0ad66711077a6cf75c78ce0
- MD5 acdf07bf052773161227c24cbd13e8f0
- SHA1 3c38c5f4b4ad0b9e590357e968bef34defe3879e
- SHA512 db0b75a1877985e7b251308fdb33d9c71723e1696979d0bf9ff4537019ae6212a9d0b4364cd2ad789852f9434cf398a35448a6c9e160fc3cfedd247daeae145c
- SSDEEP 1536:9z44CpRkr9DXhHf3aOd/56RrkQqjh+rmKVsN:9zvokZR/KM/ysjwqWsN
- TLSH T1D3932971F215E497D917D8F2991ECD3164623DBD98A0450E32E97F6964B3BE2008AF0F
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5004 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B22AC9D4 = "C:\\Users\\Admin\\AppData\\Roaming\\B22AC9D4\\bin.exe" winver.exe - Program crash 1 IoCs
pid pid_target Process procid_target 1408 4392 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 bin.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp3o8k22ad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4392 winver.exe 4392 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3224 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 3224 Explorer.EXE Token: SeCreatePagefilePrivilege 3224 Explorer.EXE Token: SeShutdownPrivilege 3224 Explorer.EXE Token: SeCreatePagefilePrivilege 3224 Explorer.EXE Token: SeShutdownPrivilege 3224 Explorer.EXE Token: SeCreatePagefilePrivilege 3224 Explorer.EXE Token: SeShutdownPrivilege 3224 Explorer.EXE Token: SeCreatePagefilePrivilege 3224 Explorer.EXE Token: SeShutdownPrivilege 3224 Explorer.EXE Token: SeCreatePagefilePrivilege 3224 Explorer.EXE Token: SeShutdownPrivilege 3224 Explorer.EXE Token: SeCreatePagefilePrivilege 3224 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4392 winver.exe - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3224 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4536 wrote to memory of 4392 4536 tmp3o8k22ad.exe 88 PID 4392 wrote to memory of 3224 4392 winver.exe 55 PID 3224 wrote to memory of 5024 3224 Explorer.EXE PID 3224 wrote to memory of 5024 3224 Explorer.EXE PID 5024 wrote to memory of 5004 5024 Process not Found 92 PID 5024 wrote to memory of 5004 5024 Process not Found 92 PID 4392 wrote to memory of 3068 4392 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:3068
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3224 -
C:\Users\Admin\AppData\Local\Temp\tmp3o8k22ad.exe"C:\Users\Admin\AppData\Local\Temp\tmp3o8k22ad.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4536 -
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:4392 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4392 -s 3524⤵
- Program crash
PID:1408
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C:\Users\Admin\AppData\Roaming\B22AC9D4\bin.exeC:\Users\Admin\AppData\Roaming\B22AC9D4\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5004
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4392 -ip 43921⤵PID:4044
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\B22AC9D4\bin.exe
- Size 88KB
- SHA256 c459bfb624a4ec8714548f42053da98e5df6bd0c5b2548bf5f0ab0b3caca1cef
- MD5 7ebe9945aa4a0ff1f0ce27b38c4b3b20
- SHA1 3c3741ff92309a9bdcd27b122118b86caaab1d14
- SHA512 9e992b0b1ea5eeb3c55b2ade9789cf3de459205e9bd1f21879254d81754095ad313da63a7f6a98b4c673dde2578c95de2d7af24997b8c1f4a0fcaa921b3c9fe0
- SSDEEP 1536:7z44CpRkr9DXhHf3aOd/56RrkQqjh+rmKVsN:7zvokZR/KM/ysjwqWsN
- TLSH T1C6932971F215E497D917D8F2991ECD3164623DBD98A0450E32E97F6964B3BE2008AF0F
- MD5 SHA1 SHA512 SSDEEP TLSH