Analysis
- max time kernel
149s - max time network
147s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows - submitted
25/05/2026, 22:30
Behavioral task
behavioral1
Sample
tmpszqjcvlz.exe
Resource
win10ltsc2021-20260513-en
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpszqjcvlz.exe
Resource
win10v2004-20260513-en
13 signatures
150 seconds
General
- Target tmpszqjcvlz.exe
- Size 34KB
- Sample260525-2e1ftabs3y
- SHA256 985a67a8d630b39234fe0b21d492429cf4d38a8c8c6e413b4ce333027f0a801c
- MD5 b58ab7caed0593af648b127b6d25e7cf
- SHA1 199e3f423cb5a1fba87b21c5f7ecc8f5b63478f0
- SHA512 d1e6cd3cecab1271e541861f6f9622e566baed63f0011237f61528d99fb87f3d14684737bb1720859d7460c0803f9c289be914c1e39b223da4bcb6911a0f3cf6
- SSDEEP 768:Xp22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:XpYoX58z1uirL98xMWnT0OQ9J2
- TLSH T135F2E1923B59E122E0EBDC3319F5680B9732C9659F5E4F7F1AC825299C74390BC43B92
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5908 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1131776342-1023621610-2767477260-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\81A89566 = "C:\\Users\\Admin\\AppData\\Roaming\\81A89566\\bin.exe" winver.exe -
resource yara_rule behavioral1/memory/4812-0-0x0000000000400000-0x0000000000417000-memory.dmp upx behavioral1/memory/5908-23-0x0000000000400000-0x0000000000417000-memory.dmp upx behavioral1/files/0x0007000000028585-21.dat upx - Program crash 1 IoCs
pid pid_target Process procid_target 4772 4484 WerFault.exe 83 - 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 tmpszqjcvlz.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 4484 winver.exe 4484 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3388 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeShutdownPrivilege 3388 Explorer.EXE Token: SeCreatePagefilePrivilege 3388 Explorer.EXE Token: SeShutdownPrivilege 3388 Explorer.EXE Token: SeCreatePagefilePrivilege 3388 Explorer.EXE Token: SeShutdownPrivilege 3388 Explorer.EXE Token: SeCreatePagefilePrivilege 3388 Explorer.EXE Token: SeShutdownPrivilege 3388 Explorer.EXE Token: SeCreatePagefilePrivilege 3388 Explorer.EXE Token: SeShutdownPrivilege 3388 Explorer.EXE Token: SeCreatePagefilePrivilege 3388 Explorer.EXE - Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 4484 winver.exe 3388 Explorer.EXE 3388 Explorer.EXE 3388 Explorer.EXE - Suspicious use of SendNotifyMessage 3 IoCs
pid Process 3388 Explorer.EXE 3388 Explorer.EXE 3388 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4812 wrote to memory of 4484 4812 tmpszqjcvlz.exe 83 PID 4484 wrote to memory of 3388 4484 winver.exe 57 PID 3388 wrote to memory of 4936 3388 Explorer.EXE PID 3388 wrote to memory of 4936 3388 Explorer.EXE PID 4936 wrote to memory of 5908 4936 Process not Found 85 PID 4936 wrote to memory of 5908 4936 Process not Found 85 PID 4484 wrote to memory of 1364 4484 winver.exe 52
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:1364
-
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:3388 -
C:\Users\Admin\AppData\Local\Temp\tmpszqjcvlz.exe"C:\Users\Admin\AppData\Local\Temp\tmpszqjcvlz.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4812 -
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:4484 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 3884⤵
- Program crash
PID:4772
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C:\Users\Admin\AppData\Roaming\81A89566\bin.exeC:\Users\Admin\AppData\Roaming\81A89566\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5908
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4484 -ip 44841⤵PID:6032
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\81A89566\bin.exe
- Size 34KB
- SHA256 65db3c1466bb43ccc01679fc549ff44921cdd1a49fad557c174aac09eacf19ec
- MD5 c2995ae86f9994bc0a8b7e8287fd4a04
- SHA1 5b146be45a87e982f2cf4f80887f0834bf014e5c
- SHA512 b9715b996f21615f714fe3054961295223649d37562de2fe9ef0db3178d20d8490f2aef978f74c23ba2241102f4906751f392f7248a10f74c7dfc09d734ff91e
- SSDEEP 768:Op22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:OpYoX58z1uirL98xMWnT0OQ9J2
- TLSH T16FF2E0923B59E122E0E7DC3319B5680B9632C9659E5E4F7B1AC825299C74390BC43B92
- MD5 SHA1 SHA512 SSDEEP TLSH