Analysis

  • max time kernel
    141s
  • max time network
    186s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    28-10-2021 09:43

General

  • Target

    ec77832d45fd52331dc4a1c243b1a707.exe

  • Size

    174KB

  • MD5

    ec77832d45fd52331dc4a1c243b1a707

  • SHA1

    f3dc139d71b653280b7842e56f2d0845a4316616

  • SHA256

    1b1d3d6ce262d1fcef892931d10e7dd77963c0d4a8134b73dc49eced853c29e5

  • SHA512

    cc00c7225a892eed4a195cbfea7c648f0287c53cf82d4acdacb8f260e46ff8a3ede75c4d0bf2470fc089bf5be6db7a36b58cd0f56651e969ac13c78e0378e2ca

Score
10/10

Malware Config

Extracted

Family

systembc

C2

185.173.39.49:4001

Signatures

  • SystemBC

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

  • Drops file in Windows directory 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ec77832d45fd52331dc4a1c243b1a707.exe
    "C:\Users\Admin\AppData\Local\Temp\ec77832d45fd52331dc4a1c243b1a707.exe"
    1⤵
    • Drops file in Windows directory
    PID:1112
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {990C63A1-2314-489F-B36C-7A2621B0BCDF} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1884
    • C:\Users\Admin\AppData\Local\Temp\ec77832d45fd52331dc4a1c243b1a707.exe
      C:\Users\Admin\AppData\Local\Temp\ec77832d45fd52331dc4a1c243b1a707.exe start
      2⤵
        PID:1560

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1112-53-0x00000000751A1000-0x00000000751A3000-memory.dmp
      Filesize

      8KB

    • memory/1112-55-0x0000000000030000-0x0000000000035000-memory.dmp
      Filesize

      20KB

    • memory/1112-54-0x0000000000020000-0x0000000000026000-memory.dmp
      Filesize

      24KB

    • memory/1112-56-0x0000000000400000-0x0000000002EF1000-memory.dmp
      Filesize

      42.9MB

    • memory/1560-57-0x0000000000000000-mapping.dmp
    • memory/1560-59-0x0000000000400000-0x0000000002EF1000-memory.dmp
      Filesize

      42.9MB