Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
22/05/2026, 13:21
Behavioral task
behavioral1
Sample
tmpkkcm790z.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmpkkcm790z.exe
- Size 110KB
- Sample260522-ql47sscs7k
- SHA256 91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2
- MD5 6345f60f4f16e4deb5b6a1af71e03ee5
- SHA1 b2110606a8271537595ecb9468155c01a8e458bc
- SHA512 22735e1ae884ca0591aab71c81da34986e35cf05a586101c01c9d01c6b31a32a0d1fbe4e05c1cc44731ec68668b9417166e9b93a392da08fbc10bbb72a8f3fcd
- SSDEEP 1536:biLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Eg:biyvRmDLs/ZrwWJjAqGcRJ2hg
- TLSH T16BB34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3236 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2409539145-3342400454-2096821238-1000\Software\Microsoft\Windows\CurrentVersion\Run\C2028C60 = "C:\\Users\\Admin\\AppData\\Roaming\\C2028C60\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/4340-0-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/files/0x001900000002b5ad-21.dat upx behavioral2/memory/3236-22-0x0000000000400000-0x000000000041E000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 3252 4964 WerFault.exe 81 - 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 bin.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmpkkcm790z.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4964 winver.exe 4964 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3240 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE Token: SeShutdownPrivilege 3240 Explorer.EXE Token: SeCreatePagefilePrivilege 3240 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4964 winver.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4340 wrote to memory of 4964 4340 tmpkkcm790z.exe 81 PID 4964 wrote to memory of 3240 4964 winver.exe 54 PID 3240 wrote to memory of 4392 3240 Explorer.EXE PID 3240 wrote to memory of 4392 3240 Explorer.EXE PID 4392 wrote to memory of 3236 4392 Process not Found 83 PID 4392 wrote to memory of 3236 4392 Process not Found 83 PID 4964 wrote to memory of 992 4964 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:992
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3240 -
C:\Users\Admin\AppData\Local\Temp\tmpkkcm790z.exe"C:\Users\Admin\AppData\Local\Temp\tmpkkcm790z.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4340 -
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:4964 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 3844⤵
- Program crash
PID:3252
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-
-
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C:\Users\Admin\AppData\Roaming\C2028C60\bin.exeC:\Users\Admin\AppData\Roaming\C2028C60\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3236
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4964 -ip 49641⤵PID:3920
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\C2028C60\bin.exe
- Size 110KB
- SHA256 12478af83832b23873b5625e6a8e5ce786b9080da34ad2aae676a55e7be56856
- MD5 cc31da9873ed2a97411323bbcff826a4
- SHA1 72e529449d06e8fce262520c5829422e9f1a976c
- SHA512 c37d8cd803d45c6a797823787b4b6d55351c313e11619b01f1038625f036211db383c5fd10b927ac3a24214a5605f022de502fcc290098361bb713793bd41896
- SSDEEP 1536:kiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Eg:kiyvRmDLs/ZrwWJjAqGcRJ2hg
- TLSH T1F1B34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH