Analysis
- max time kernel
149s - max time network
143s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-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 3928 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1108628292-2849104889-3743975892-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3F168E22 = "C:\\Users\\Admin\\AppData\\Roaming\\3F168E22\\bin.exe" winver.exe -
resource yara_rule behavioral1/memory/1304-0-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral1/files/0x00070000000284e4-20.dat upx behavioral1/memory/3928-23-0x0000000000400000-0x000000000041E000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 1120 1664 WerFault.exe 87 - 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 1664 winver.exe 1664 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3396 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeShutdownPrivilege 3396 Explorer.EXE Token: SeCreatePagefilePrivilege 3396 Explorer.EXE Token: SeShutdownPrivilege 3396 Explorer.EXE Token: SeCreatePagefilePrivilege 3396 Explorer.EXE Token: SeShutdownPrivilege 3396 Explorer.EXE Token: SeCreatePagefilePrivilege 3396 Explorer.EXE Token: SeShutdownPrivilege 3396 Explorer.EXE Token: SeCreatePagefilePrivilege 3396 Explorer.EXE Token: SeShutdownPrivilege 3396 Explorer.EXE Token: SeCreatePagefilePrivilege 3396 Explorer.EXE Token: SeShutdownPrivilege 3396 Explorer.EXE Token: SeCreatePagefilePrivilege 3396 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1664 winver.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1304 wrote to memory of 1664 1304 tmpbd31vdhi.exe 87 PID 1664 wrote to memory of 3396 1664 winver.exe 57 PID 3396 wrote to memory of 3888 3396 Explorer.EXE PID 3396 wrote to memory of 3888 3396 Explorer.EXE PID 3888 wrote to memory of 3928 3888 Process not Found 89 PID 3888 wrote to memory of 3928 3888 Process not Found 89 PID 1664 wrote to memory of 3076 1664 winver.exe 52
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:3076
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3396 -
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:1304 -
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:1664 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1664 -s 3884⤵
- Program crash
PID:1120
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C:\Users\Admin\AppData\Roaming\3F168E22\bin.exeC:\Users\Admin\AppData\Roaming\3F168E22\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3928
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1664 -ip 16641⤵PID:3060
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\3F168E22\bin.exe
- Size 110KB
- SHA256 7462c09389d078d922743c2a4942e8464d674b8bec527e323013ad1631e2f38b
- MD5 ea1c6b73ba8f7f199b82abea4734e262
- SHA1 c592fa0e132bcfe88e351212750ae8b8dacb40f1
- SHA512 01793c1ab2132bb2f900017039488555be217ee0b4d140b6803abac6d775e597fa35c547a54f996f1acd66697ceba1587dc87ff26218008f8b3ddfb6ef458dc3
- SSDEEP 1536:aiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0EQ:aiyvRmDLs/ZrwWJjAqGcRJ2hQ
- TLSH T1E0B34B62F204E88BE817D8F69919CD3168A33DBD4890455E32D9BF6D58B3AE30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH