Analysis
- max time kernel
149s - max time network
147s - 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, 00:50
Behavioral task
behavioral1
Sample
tmp_4bt7vwx.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmp_4bt7vwx.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmp_4bt7vwx.exe
- Size 45KB
- Sample260602-a64trsh14v
- SHA256 ba0818c4f0d8a110057a69a7318edc9e0f7e7fe94d419c4e5eee0d88a6f68d71
- MD5 690810f393be087ac9c8af76042f5770
- SHA1 2a419e0c6ca590da97e1765884cc829c8d805170
- SHA512 162c682041b74d872f1f453b4a29d937df066d570b2d2bc5b68f2737fe9369462777858fccc59a43a64ec82aa250177538cc542e3c6fa64f6d6cb03b4a3bbebd
- SSDEEP 768:BhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ23:7sWE9N5dFu53dsniQaB/xZ14n7zIF+qj
- TLSH T10023F1DEFA17BC6AF4B38E3D63030B354612AA3175AEE757186152DD2C31364CE41B2A
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 212 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\545EBC1A = "C:\\Users\\Admin\\AppData\\Roaming\\545EBC1A\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/1720-0-0x0000000000400000-0x000000000041D000-memory.dmp upx behavioral2/files/0x0007000000024510-20.dat upx behavioral2/memory/212-23-0x0000000000400000-0x000000000041D000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 3952 5036 WerFault.exe 89 - 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 tmp_4bt7vwx.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 5036 winver.exe 5036 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3208 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 12 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 - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5036 winver.exe - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3208 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1720 wrote to memory of 5036 1720 tmp_4bt7vwx.exe 89 PID 5036 wrote to memory of 3208 5036 winver.exe 55 PID 3208 wrote to memory of 2992 3208 Explorer.EXE PID 3208 wrote to memory of 2992 3208 Explorer.EXE PID 2992 wrote to memory of 212 2992 Process not Found 92 PID 2992 wrote to memory of 212 2992 Process not Found 92 PID 5036 wrote to memory of 2104 5036 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2104
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3208 -
C:\Users\Admin\AppData\Local\Temp\tmp_4bt7vwx.exe"C:\Users\Admin\AppData\Local\Temp\tmp_4bt7vwx.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1720 -
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:5036 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5036 -s 3524⤵
- Program crash
PID:3952
-
-
-
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C:\Users\Admin\AppData\Roaming\545EBC1A\bin.exeC:\Users\Admin\AppData\Roaming\545EBC1A\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:212
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5036 -ip 50361⤵PID:4628
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\545EBC1A\bin.exe
- Size 45KB
- SHA256 7270d521332f4cc38592a43a6c675b0d875c6ac4cc28b984cccbef83b518f011
- MD5 14412dd9032d45f3019bcbd9a0a24efa
- SHA1 8f8fc36a8155a0e31af2fa45b06f2d320bd3ef72
- SHA512 c8948c19e14fb291be65b5ae9aad7ef8be9faef2d4512cda4dc3a7ece6a1b539a2f699c4884681adeb7d0c87e59d30b1c1bf20732cc8ca616062017393e6f3bb
- SSDEEP 768:ahP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ23:WsWE9N5dFu53dsniQaB/xZ14n7zIF+qj
- TLSH T16623F1DEEA17BC6AF4B38E3D63030B354612AA3175AEE757186152DD2C31364CE41B2A
- MD5 SHA1 SHA512 SSDEEP TLSH