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
22/05/2026, 12:25
Behavioral task
behavioral1
Sample
tmpbd31vdhi.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpbd31vdhi.exe
Resource
win10v2004-20260513-en
13 signatures
150 seconds
General
- Target tmpbd31vdhi.exe
- Size 110KB
- Sample260522-plkmqaaz4n
- SHA256 3d31b34ad1ae466cb169d16c8fe3d4a0f3291aa58222adc35cd74460cb99630a
- MD5 76ea40782d074c30ca43771555de24dc
- SHA1 d7d6c3cf2871bba30ec5d5b0ac90c9791cea4db2
- SHA512 cb23614372ae0d6bf80ef3da519ae3919f0c6176ba8805b462bab2e30ce42632a4c09ad6a77421dac099d50f2689d3b34ba9e89f858038e0c0416851b59972f3
- SSDEEP 1536:HiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0EQ:HiyvRmDLs/ZrwWJjAqGcRJ2hQ
- TLSH T1DAB34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 6012 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\C0B2D358 = "C:\\Users\\Admin\\AppData\\Roaming\\C0B2D358\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/4312-0-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/files/0x00090000000245eb-20.dat upx behavioral2/memory/6012-23-0x0000000000400000-0x000000000041E000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 1768 3296 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 tmpbd31vdhi.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 3296 winver.exe 3296 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3208 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 10 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 - Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 3296 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 UnmapMainImage 1 IoCs
pid Process 3208 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4312 wrote to memory of 3296 4312 tmpbd31vdhi.exe 86 PID 3296 wrote to memory of 3208 3296 winver.exe 55 PID 3208 wrote to memory of 3928 3208 Explorer.EXE PID 3208 wrote to memory of 3928 3208 Explorer.EXE PID 3928 wrote to memory of 6012 3928 Process not Found 90 PID 3928 wrote to memory of 6012 3928 Process not Found 90 PID 3296 wrote to memory of 2972 3296 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2972
-
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 UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3208 -
C:\Users\Admin\AppData\Local\Temp\tmpbd31vdhi.exe"C:\Users\Admin\AppData\Local\Temp\tmpbd31vdhi.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4312 -
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:3296 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3296 -s 3524⤵
- Program crash
PID:1768
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-
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C:\Users\Admin\AppData\Roaming\C0B2D358\bin.exeC:\Users\Admin\AppData\Roaming\C0B2D358\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:6012
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3296 -ip 32961⤵PID:3412
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\C0B2D358\bin.exe
- Size 110KB
- SHA256 b96159bda131b0c340e2979170c61394b9aab564018c05c6af76d293c0c63640
- MD5 6c18dcede260dc6041eee07b5e9638be
- SHA1 2914db93a2cacc4dc67515efdd8bb613d8fbede3
- SHA512 f2a7d9d58ec741e7b776adc1d9ef2cc78b15e96366f01bdf0257543e753f2e65d54bb03d389d2a9b57dfa9a97d2081d4d0cf2233ff738b82afe3f6c3854186f3
- SSDEEP 1536:uiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0EQ:uiyvRmDLs/ZrwWJjAqGcRJ2hQ
- TLSH T1B6B34B62F204E88BE817D8F69919CD3168A33DBD4890455E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH