Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
08/09/2026, 19:28
General
- Target _bz2.dll
- Size 22KB
- Sample260908-x6t1wsgn21
- SHA256 7d2582232644a911b2fffb5d60d8c51672384050491a159d8f6d19b58fe17cc9
Score
5/10
Malware Config
Signatures
- UPX packed file 7 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\_bz2.dll,#11⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\_bz2.dll,#12⤵
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 6283⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4836 -ip 48361⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/4836-0-0x00000000758C0000-0x00000000758CD000-memory.dmp
memory/4836-1-0x00000000758A0000-0x00000000758B4000-memory.dmp
memory/4836-2-0x00000000752D0000-0x000000007587D000-memory.dmp
memory/4836-3-0x00000000752A0000-0x00000000752BA000-memory.dmp
memory/4836-5-0x00000000758A0000-0x00000000758B4000-memory.dmp
memory/4836-4-0x00000000758C0000-0x00000000758CD000-memory.dmp
memory/4836-6-0x00000000752D0000-0x000000007587D000-memory.dmp