Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
02/06/2026, 01:03
Behavioral task
behavioral1
Sample
tmpzzv9yylt.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpzzv9yylt.exe
Resource
win10v2004-20260513-en
13 signatures
150 seconds
General
- Target tmpzzv9yylt.exe
- Size 110KB
- Sample260602-bel1baas6s
- SHA256 f22e30ce79ae791b00f14772121b82f4867db82b5e8c70620a239fd31b547ac3
- MD5 5ebba44334469e30727fef88b334ae10
- SHA1 603783ab0dc69736338878c57eeb259a059f74f6
- SHA512 5a8961c51b2108168f174417e0daf45d3a0575d0384bf67df5a012a8b7b3d58c38ce2e440d6630827fce2d8bd81df96acc1a56fb10d31b937e513ef5dbad71a4
- SSDEEP 1536:xiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Eg:xiyvRmDLs/ZrwWJjAqGcRJ2hg
- TLSH T1C5B34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3484 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-226940941-599731907-2645636698-1000\Software\Microsoft\Windows\CurrentVersion\Run\BD498D7E = "C:\\Users\\Admin\\AppData\\Roaming\\BD498D7E\\bin.exe" winver.exe -
resource yara_rule behavioral3/memory/5132-0-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral3/files/0x000200000002a938-17.dat upx behavioral3/memory/3484-19-0x0000000000400000-0x000000000041E000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 3028 4436 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 tmpzzv9yylt.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 4436 winver.exe 4436 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3284 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE Token: SeShutdownPrivilege 3284 Explorer.EXE Token: SeCreatePagefilePrivilege 3284 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4436 winver.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 5132 wrote to memory of 4436 5132 tmpzzv9yylt.exe 80 PID 4436 wrote to memory of 3284 4436 winver.exe 54 PID 3284 wrote to memory of 4980 3284 Explorer.EXE PID 3284 wrote to memory of 4980 3284 Explorer.EXE PID 4980 wrote to memory of 3484 4980 Process not Found 82 PID 4980 wrote to memory of 3484 4980 Process not Found 82 PID 4436 wrote to memory of 2788 4436 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2788
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3284 -
C:\Users\Admin\AppData\Local\Temp\tmpzzv9yylt.exe"C:\Users\Admin\AppData\Local\Temp\tmpzzv9yylt.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5132 -
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:4436 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4436 -s 3804⤵
- Program crash
PID:3028
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C:\Users\Admin\AppData\Roaming\BD498D7E\bin.exeC:\Users\Admin\AppData\Roaming\BD498D7E\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3484
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4436 -ip 44361⤵PID:3720
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\BD498D7E\bin.exe
- Size 110KB
- SHA256 c3be9ed248fa15239fe612e3ab414ea7e6cd1707ed0e48060dded0c52dc1b512
- MD5 0593dec1ab8ecf0dd8a2e63eec326af8
- SHA1 1a6db98a5a01ffb7a6cd302130baec3b3f243d1d
- SHA512 1b87c13576b5abec686e93ba04e813bda6936bb964f62754a194bbbb0dc1241005b7204fd08788facd720fb8f5b98b571c8c541e8020fdb26d3b8603dcdf6d06
- SSDEEP 1536:oiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Eg:oiyvRmDLs/ZrwWJjAqGcRJ2hg
- TLSH T14AB34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH