Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/06/2026, 03:58

General

  • Target
    Decache Exporter/bin/7z/Codecs/brotli/libbrotlienc.dll
  • Size 548KB
  • Sample260602-ejmn7adv4v
  • SHA256 ba9675ba658f609e01a6cbd4fcc10f4413ec40c720824dbc25ade5edfa6299fc
  • MD5 SHA1 SHA512 SSDEEP TLSH
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.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Decache Exporter\bin\7z\Codecs\brotli\libbrotlienc.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2304
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Decache Exporter\bin\7z\Codecs\brotli\libbrotlienc.dll",#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3216
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3216 -s 604
        3⤵
        • Program crash
        PID:3496
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3216 -ip 3216
    1⤵
      PID:2052

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/3216-0-0x0000000075440000-0x00000000754D1000-memory.dmp

          memory/3216-1-0x0000000075410000-0x0000000075439000-memory.dmp