Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-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 2208 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Windows\CurrentVersion\Run\4EB1FFBF = "C:\\Users\\Admin\\AppData\\Roaming\\4EB1FFBF\\bin.exe" winver.exe - Program crash 1 IoCs
pid pid_target Process procid_target 584 2872 WerFault.exe 81 - 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 tmp3o8k22ad.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 2872 winver.exe 2872 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3208 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE Token: SeShutdownPrivilege 3208 Explorer.EXE Token: SeCreatePagefilePrivilege 3208 Explorer.EXE - Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 2872 winver.exe 3208 Explorer.EXE 3208 Explorer.EXE 3208 Explorer.EXE - Suspicious use of SendNotifyMessage 3 IoCs
pid Process 3208 Explorer.EXE 3208 Explorer.EXE 3208 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4504 wrote to memory of 2872 4504 tmp3o8k22ad.exe 81 PID 2872 wrote to memory of 3208 2872 winver.exe 54 PID 3208 wrote to memory of 1872 3208 Explorer.EXE PID 3208 wrote to memory of 1872 3208 Explorer.EXE PID 1872 wrote to memory of 2208 1872 Process not Found 83 PID 1872 wrote to memory of 2208 1872 Process not Found 83 PID 2872 wrote to memory of 1064 2872 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:1064
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3208 -
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:4504 -
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:2872 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 3804⤵
- Program crash
PID:584
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C:\Users\Admin\AppData\Roaming\4EB1FFBF\bin.exeC:\Users\Admin\AppData\Roaming\4EB1FFBF\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2208
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2872 -ip 28721⤵PID:1304
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\4EB1FFBF\bin.exe
- Size 88KB
- SHA256 644617f25dd826b93469d0f8c6df20c8944a73c296d97d2ae31281f95308f98e
- MD5 6fb648a273b10c017fa7e317721b32f2
- SHA1 43c753b49d66298d7ce7fed5cd71f0ed439e55df
- SHA512 936cce97afd6cc80558ba3abdc38fd021588adf317f5cb5227299ac46f903a3383d34877af60ac5d48c493791ed5c9cceae7de71d41f0869637a8ea35ede81c7
- SSDEEP 1536:Vz44CpRkr9DXhHf3aOd/56RrkQqjh+rmKVsN:VzvokZR/KM/ysjwqWsN
- TLSH T1D7932971F215E497D917D8F2991ECD3164623DBD98A0450E32E97F6964B3BE2008AF0F
- MD5 SHA1 SHA512 SSDEEP TLSH