Analysis

  • max time kernel
    61s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 07:31

General

  • Target

    c65326b66f8e1799d3b4b62ced8431ad.exe

  • Size

    946KB

  • MD5

    c65326b66f8e1799d3b4b62ced8431ad

  • SHA1

    2435632e756173e92a1f14e10573bdc32895a6c5

  • SHA256

    c72ce273124fce08bf9dd61845a78651d7ba402f9164f117f4d6d0ad5d0212ba

  • SHA512

    034b09c7f3bd8b2dba0f3aad38d96db03d9c23c09b36653014716088c5829b40d1255c0b7c8880d9ec19a342132be2ddbac88c6b4bcea31c44643370f40300a1

Score
10/10

Malware Config

Extracted

Family

systembc

C2

135.125.248.50:443

146.70.53.169:443

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\c65326b66f8e1799d3b4b62ced8431ad.exe
    "C:\Users\Admin\AppData\Local\Temp\c65326b66f8e1799d3b4b62ced8431ad.exe"
    1⤵
    • Drops file in Windows directory
    PID:1968
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {A7016F27-5C55-4949-BAD2-1E658EB2803F} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:992
    • C:\Users\Admin\AppData\Local\Temp\c65326b66f8e1799d3b4b62ced8431ad.exe
      C:\Users\Admin\AppData\Local\Temp\c65326b66f8e1799d3b4b62ced8431ad.exe start
      2⤵
        PID:1636

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1636-57-0x0000000000000000-mapping.dmp
    • memory/1636-59-0x0000000000400000-0x00000000004F4000-memory.dmp
      Filesize

      976KB

    • memory/1968-54-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
      Filesize

      8KB

    • memory/1968-55-0x00000000002D0000-0x00000000002D5000-memory.dmp
      Filesize

      20KB

    • memory/1968-56-0x0000000000400000-0x00000000004F4000-memory.dmp
      Filesize

      976KB