Analysis

  • max time kernel
    120s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    07-11-2021 09:38

General

  • Target

    313d1b2d4230e9de7f7bc5c3500b91a6.exe

  • Size

    190KB

  • MD5

    313d1b2d4230e9de7f7bc5c3500b91a6

  • SHA1

    194a4887da7619e775434bc9bcd9fce30f112d68

  • SHA256

    6baa26e0f82719c4f8e763c7d7f584a925279fcf8c18644792a4a7091d5c64f0

  • SHA512

    e559f5d5f51692f4897b42b501c5ede260761897da7db17b81e8a4909a9d3a60df2e2827fb365950f6335abeeab5ec5badff2179734e8ca2fb318139db344681

Score
10/10

Malware Config

Extracted

Family

systembc

C2

91.209.70.71:4199

192.53.123.202:4199

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\313d1b2d4230e9de7f7bc5c3500b91a6.exe
    "C:\Users\Admin\AppData\Local\Temp\313d1b2d4230e9de7f7bc5c3500b91a6.exe"
    1⤵
    • Drops file in Windows directory
    PID:1156
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {893041EB-056A-4660-A2CA-4DEAF9EB2D8B} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Users\Admin\AppData\Local\Temp\313d1b2d4230e9de7f7bc5c3500b91a6.exe
      C:\Users\Admin\AppData\Local\Temp\313d1b2d4230e9de7f7bc5c3500b91a6.exe start
      2⤵
        PID:804

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/804-59-0x0000000000000000-mapping.dmp

    • memory/804-61-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1156-55-0x0000000076531000-0x0000000076533000-memory.dmp

      Filesize

      8KB

    • memory/1156-57-0x00000000001C0000-0x00000000001C5000-memory.dmp

      Filesize

      20KB

    • memory/1156-56-0x00000000001B0000-0x00000000001B6000-memory.dmp

      Filesize

      24KB

    • memory/1156-58-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB