Analysis
- max time kernel
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
22/05/2026, 12:42
Behavioral task
behavioral1
Sample
tmpsprn1li6.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpsprn1li6.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmpsprn1li6.exe
- Size 45KB
- Sample260522-pxvbasdx9x
- SHA256 29de10e39bbd750d454f547e47f430bfe5cca89b6d26fe6f4fec5f815a80de0b
- MD5 70b31986953644b8fabe2dd48cde3f20
- SHA1 c32ab2cd06d8af181e8b2559e714dddf9c41499b
- SHA512 be6a66b287227c9586e33a2e5fa4c944f6ea91543ff6bde809813a7cd245f1a4b7fe6131fda7951d4a1be8ac021ed732872144c5bdd36344c990ee795a1de969
- SSDEEP 768:ihP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ23:OsWE9N5dFu53dsniQaB/xZ14n7zIF+qj
- TLSH T14E23F1DEFA177C6AF4B38E3D63030B354612AA3175AEE757186192DD2C31364CE41B2A
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4848 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1636999435-3883760687-346127294-1000\Software\Microsoft\Windows\CurrentVersion\Run\B676F04C = "C:\\Users\\Admin\\AppData\\Roaming\\B676F04C\\bin.exe" winver.exe -
resource yara_rule behavioral3/memory/2356-0-0x0000000000400000-0x000000000041D000-memory.dmp upx behavioral3/files/0x001900000002b530-20.dat upx behavioral3/memory/4848-22-0x0000000000400000-0x000000000041D000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 796 2876 WerFault.exe 80 - 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 tmpsprn1li6.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 2876 winver.exe 2876 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3200 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE Token: SeShutdownPrivilege 3200 Explorer.EXE Token: SeCreatePagefilePrivilege 3200 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2876 winver.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2356 wrote to memory of 2876 2356 tmpsprn1li6.exe 80 PID 2876 wrote to memory of 3200 2876 winver.exe 54 PID 3200 wrote to memory of 4832 3200 Explorer.EXE PID 3200 wrote to memory of 4832 3200 Explorer.EXE PID 4832 wrote to memory of 4848 4832 Process not Found 82 PID 4832 wrote to memory of 4848 4832 Process not Found 82 PID 2876 wrote to memory of 2100 2876 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2100
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3200 -
C:\Users\Admin\AppData\Local\Temp\tmpsprn1li6.exe"C:\Users\Admin\AppData\Local\Temp\tmpsprn1li6.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356 -
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:2876 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2876 -s 3884⤵
- Program crash
PID:796
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C:\Users\Admin\AppData\Roaming\B676F04C\bin.exeC:\Users\Admin\AppData\Roaming\B676F04C\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4848
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2876 -ip 28761⤵PID:4768
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\B676F04C\bin.exe
- Size 45KB
- SHA256 ae807dfff9aecc902f7d6281cafbad849a6c8737a8f963d66807aad1a4b87888
- MD5 015a3fed6b53121ddb08c85c7a13675f
- SHA1 4c81f9721a117eb4bab4ebec2879439a5819d007
- SHA512 6581c6e00934b163a67c0bcc7a98ca14d0f13d7367c4937162490cc98a0c8e1fb7fc3fae2b144ab2260a815f2a8aa2b08d7ad2a796f80ed2e4c0345d6a8c9b96
- SSDEEP 768:GhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ23:KsWE9N5dFu53dsniQaB/xZ14n7zIF+qj
- TLSH T18B23F1DEFA177C6AF4B38E3D63030B354612AA3175AEE757186192DD2C31364CE41B2A
- MD5 SHA1 SHA512 SSDEEP TLSH