Analysis
- max time kernel
94s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
02/06/2026, 01:19
Behavioral task
behavioral1
Sample
tmpfufnrrn7.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpfufnrrn7.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmpfufnrrn7.exe
- Size 89KB
- Sample260602-bphqmsav2y
- SHA256 454146b9e6283876a792643894a2b1c38e0fead807ce6602bf394478ce3ceca3
- MD5 c9faccaef066e49fcf7dc496dd5cf417
- SHA1 86c3473bf10f0371807a48773903a2b1a9b18ac4
- SHA512 867f30cc87c04cac3ff8f539d93e91687499e9bbe2c6357361275366dc391710a4e88e184168ef976ce08bb89cd5fe0e3331d84d36faf6e1659b40c225cd11a6
- SSDEEP 1536:v1+mFM2HXKZgixhIksu+XM5/HtAQ9Jox7u:N+4MJIkLZJNAQ9Jo9u
- TLSH T1B493292273A5901FF0B3BEB92E3485250D27B9745C34D69A76C88E4E4A73DC39D21B23
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3064 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\254BAF14 = "C:\\Users\\Admin\\AppData\\Roaming\\254BAF14\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/3224-0-0x0000000000400000-0x0000000000418000-memory.dmp upx behavioral2/files/0x000a000000024412-22.dat upx behavioral2/memory/3064-21-0x0000000000400000-0x0000000000418000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 3864 5232 WerFault.exe 86 - 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 tmpfufnrrn7.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 5232 winver.exe 5232 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3344 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 38 IoCs
description pid Process Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE Token: SeShutdownPrivilege 3344 Explorer.EXE Token: SeCreatePagefilePrivilege 3344 Explorer.EXE - Suspicious use of FindShellTrayWindow 6 IoCs
pid Process 5232 winver.exe 3344 Explorer.EXE 3344 Explorer.EXE 3344 Explorer.EXE 3344 Explorer.EXE 3344 Explorer.EXE - Suspicious use of SendNotifyMessage 3 IoCs
pid Process 3344 Explorer.EXE 3344 Explorer.EXE 3344 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 3224 wrote to memory of 5232 3224 tmpfufnrrn7.exe 86 PID 5232 wrote to memory of 3344 5232 winver.exe 56 PID 3344 wrote to memory of 2344 3344 Explorer.EXE PID 3344 wrote to memory of 2344 3344 Explorer.EXE PID 2344 wrote to memory of 3064 2344 Process not Found 96 PID 2344 wrote to memory of 3064 2344 Process not Found 96 PID 5232 wrote to memory of 2280 5232 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2280
-
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:3344 -
C:\Users\Admin\AppData\Local\Temp\tmpfufnrrn7.exe"C:\Users\Admin\AppData\Local\Temp\tmpfufnrrn7.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3224 -
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:5232 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5232 -s 3524⤵
- Program crash
PID:3864
-
-
-
-
C:\Users\Admin\AppData\Roaming\254BAF14\bin.exeC:\Users\Admin\AppData\Roaming\254BAF14\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3064
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5232 -ip 52321⤵PID:4700
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\254BAF14\bin.exe
- Size 89KB
- SHA256 d089eee875d09f2603faab8bd11a8aea60347f2f2670c037c371265fef21e5f2
- MD5 aa88cdb8e8cfa466673602cf24a52032
- SHA1 211126c9df97f1c3374adbf76f69de5c811cb07b
- SHA512 33519d9728b2fc23c5b6220f4da6c549585bdae1b0d1517f9cf2b5aab47c507cd8a21a27aed534f84d6dc868047894e3ea751f4c6a76fd6df915dbc33b6c3c7b
- SSDEEP 1536:y1+mFM2HXKZgixhIksu+XM5/HtAQ9Jox7u:a+4MJIkLZJNAQ9Jo9u
- TLSH T1FC93292273A5901FF0B3BEB92E3485250D27B9745C34D69A76C88E4E4A73DC39D21B23
- MD5 SHA1 SHA512 SSDEEP TLSH