Analysis

  • max time kernel
    144s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/06/2023, 20:48

General

  • Target
    file.exe
  • Size 263KB
  • Sample230605-zleftabd2z
  • SHA256 4406711113df2e32ba7a4d0ca3befc8f2572646d6b48e494fd42633fed60e328
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • systembc

C2
  • 23.95.44.228:53

Signatures

  • SystemBC

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

  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops file in Windows directory 2 IoCs
  • Program crash 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Drops file in Windows directory
    PID:2820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 944
      2⤵
      • Program crash
      PID:3068
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2820 -ip 2820
    1⤵
      PID:3096
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      C:\Users\Admin\AppData\Local\Temp\file.exe start
      1⤵
        PID:1388

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/1388-145-0x0000000000400000-0x0000000002CE9000-memory.dmp

            memory/2820-136-0x0000000004A20000-0x0000000004A25000-memory.dmp

            memory/2820-137-0x0000000000400000-0x0000000002CE9000-memory.dmp