Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/08/2023, 14:26

General

  • Target
    3c259a269cfbb752ca15046aca1bea4a31390e4674de632c5c9428e95b41db1dexe_JC.dll
  • Size 5.8MB
  • Sample230804-rr57qacd9s
  • SHA256 3c259a269cfbb752ca15046aca1bea4a31390e4674de632c5c9428e95b41db1d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • systembc

C2
  • 5.42.65.67:4298

  • localhost.exchange:4298

Signatures

  • SystemBC

    SystemBC is a proxy and remote administration tool first seen in 2019.

  • Blocklisted process makes network request 1 IoCs
  • VMProtect packed file 2 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c259a269cfbb752ca15046aca1bea4a31390e4674de632c5c9428e95b41db1dexe_JC.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Suspicious behavior: EnumeratesProcesses
    PID:2604

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/2604-134-0x00007FF903C90000-0x00007FF904658000-memory.dmp

        memory/2604-133-0x00007FF921850000-0x00007FF921852000-memory.dmp

        memory/2604-135-0x00007FF921860000-0x00007FF921862000-memory.dmp

        memory/2604-136-0x00007FF920190000-0x00007FF920192000-memory.dmp

        memory/2604-137-0x00007FF9201A0000-0x00007FF9201A2000-memory.dmp

        memory/2604-138-0x00007FF91F670000-0x00007FF91F672000-memory.dmp

        memory/2604-139-0x00007FF91F680000-0x00007FF91F682000-memory.dmp

        memory/2604-140-0x00007FF921870000-0x00007FF921872000-memory.dmp

        memory/2604-141-0x00007FF903C90000-0x00007FF904658000-memory.dmp

        memory/2604-142-0x000001DB5FB30000-0x000001DB5FC45000-memory.dmp