Analysis
- max time kernel
898s - max time network
580s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260130-en - resource tags
- submitted
29/04/2026, 11:34
General
- Target mingw32/bin/libbrotlidec.dll
- Size 53KB
- Sample260429-nplhrafs2p
- SHA256 cb3e712b6204adce2fea1782e95e6c000bc457017b2588215cde2b8daa9c1cee
Score
3/10
Malware Config
Signatures
- 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\mingw32\bin\libbrotlidec.dll,#11⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\mingw32\bin\libbrotlidec.dll,#12⤵
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4252 -s 6043⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4252 -ip 42521⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/4252-1-0x000000006E640000-0x000000006E655000-memory.dmp
memory/4252-0-0x0000000001300000-0x0000000001387000-memory.dmp
memory/4252-2-0x000000006D6C0000-0x000000006D6EA000-memory.dmp