Analysis
- max time kernel
149s - max time network
98s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
09/06/2026, 00:27
Behavioral task
behavioral1
Sample
tmpkjcihg9b.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpkjcihg9b.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmpkjcihg9b.exe
- Size 34KB
- Sample260609-ar8jeah19n
- SHA256 9c098e84af7e0cfe50a24ce699c95d69ac395ef908bcb52aa657dbcbfbd3e397
- MD5 eb3651e28021ee5ff712b340eacafd03
- SHA1 fe939cdfb03f06b8e5c441008a943c68ddfaf38d
- SHA512 7f129ba7472b8de988046e1c875d7ff371e788547648f666b771fdf50e38b121dedb61f6c015803ade2afe58c9d4ad4e28d4656a665c532c1fa8f667476862f1
- SSDEEP 768:1p22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:1pYoX58z1uirL98xMWnT0OQ9J2
- TLSH T136F2E1923B59E122E0E7DC3319F5680B9731C9699F5E4F7F1AC825299C74390BC43B92
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4504 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-226940941-599731907-2645636698-1000\Software\Microsoft\Windows\CurrentVersion\Run\C5D2E67D = "C:\\Users\\Admin\\AppData\\Roaming\\C5D2E67D\\bin.exe" winver.exe -
resource yara_rule behavioral3/memory/4900-0-0x0000000000400000-0x0000000000417000-memory.dmp upx behavioral3/files/0x001900000002b6b7-20.dat upx behavioral3/memory/4504-21-0x0000000000400000-0x0000000000417000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 2620 3708 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 tmpkjcihg9b.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 3708 winver.exe 3708 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3252 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE Token: SeShutdownPrivilege 3252 Explorer.EXE Token: SeCreatePagefilePrivilege 3252 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3708 winver.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4900 wrote to memory of 3708 4900 tmpkjcihg9b.exe 81 PID 3708 wrote to memory of 3252 3708 winver.exe 54 PID 3252 wrote to memory of 4856 3252 Explorer.EXE PID 3252 wrote to memory of 4856 3252 Explorer.EXE PID 4856 wrote to memory of 4504 4856 Process not Found 83 PID 4856 wrote to memory of 4504 4856 Process not Found 83 PID 3708 wrote to memory of 2708 3708 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2708
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3252 -
C:\Users\Admin\AppData\Local\Temp\tmpkjcihg9b.exe"C:\Users\Admin\AppData\Local\Temp\tmpkjcihg9b.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900 -
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:3708 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 3804⤵
- Program crash
PID:2620
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-
-
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C:\Users\Admin\AppData\Roaming\C5D2E67D\bin.exeC:\Users\Admin\AppData\Roaming\C5D2E67D\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4504
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3708 -ip 37081⤵PID:5604
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\C5D2E67D\bin.exe
- Size 34KB
- SHA256 44c43b0a2a9dac11a8947ee0caa093fd10acc514af44e78b7834a8d2678edaf2
- MD5 e1d84001ccb876c530fa726fb0d75633
- SHA1 f9f52face2210c38d5e8cb660a65d4fd74f95919
- SHA512 fcef4c4b464b547e5bf261810fb6bc99d56d6f9f9341f599fd74385bb346fa4aee57dcc7674586b4b79d56eb1ebf50bed256a85c0f7dfa63467672fe678a85a6
- SSDEEP 768:6p22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:6pYoX58z1uirL98xMWnT0OQ9J2
- TLSH T107F2E1923B59E122E0E7DC3319F9680B9732C9659F5E4F7F1AC825299C74390BC43B92
- MD5 SHA1 SHA512 SSDEEP TLSH