Analysis

  • max time kernel
    121s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    14-03-2022 12:10

General

  • Target

    d459fe09514251363fe07d7c9336c5659a3d51ae3edd0f2e012910e456b6d0bd.exe

  • Size

    237KB

  • MD5

    5fec4203d30fbffd91052af48fd6bf6c

  • SHA1

    39aa00403c3b67bc6bc0ba4290fae22363ee9082

  • SHA256

    d459fe09514251363fe07d7c9336c5659a3d51ae3edd0f2e012910e456b6d0bd

  • SHA512

    fb79914b0e5d8c979a6d59a0a1b495f4261897bed1df7a97d2d7fff2d6f0568ff2736cf611992c0090f9707f569acc03076692460d32b47715c53ada35460087

Malware Config

Extracted

Family

systembc

C2

31.44.185.6:4001

31.44.185.11:4001

Signatures

  • SystemBC

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

  • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • suricata: ET MALWARE Win32/SystemBC CnC Checkin

    suricata: ET MALWARE Win32/SystemBC CnC Checkin

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d459fe09514251363fe07d7c9336c5659a3d51ae3edd0f2e012910e456b6d0bd.exe
    "C:\Users\Admin\AppData\Local\Temp\d459fe09514251363fe07d7c9336c5659a3d51ae3edd0f2e012910e456b6d0bd.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:2780
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2780 -s 484
      2⤵
      • Program crash
      PID:4932
  • C:\ProgramData\rriiua\hdwdiqu.exe
    C:\ProgramData\rriiua\hdwdiqu.exe start
    1⤵
    • Executes dropped EXE
    • Drops file in Windows directory
    PID:1888
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2780 -ip 2780
    1⤵
      PID:4580

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\rriiua\hdwdiqu.exe

      MD5

      5fec4203d30fbffd91052af48fd6bf6c

      SHA1

      39aa00403c3b67bc6bc0ba4290fae22363ee9082

      SHA256

      d459fe09514251363fe07d7c9336c5659a3d51ae3edd0f2e012910e456b6d0bd

      SHA512

      fb79914b0e5d8c979a6d59a0a1b495f4261897bed1df7a97d2d7fff2d6f0568ff2736cf611992c0090f9707f569acc03076692460d32b47715c53ada35460087

    • C:\ProgramData\rriiua\hdwdiqu.exe

      MD5

      5fec4203d30fbffd91052af48fd6bf6c

      SHA1

      39aa00403c3b67bc6bc0ba4290fae22363ee9082

      SHA256

      d459fe09514251363fe07d7c9336c5659a3d51ae3edd0f2e012910e456b6d0bd

      SHA512

      fb79914b0e5d8c979a6d59a0a1b495f4261897bed1df7a97d2d7fff2d6f0568ff2736cf611992c0090f9707f569acc03076692460d32b47715c53ada35460087

    • memory/1888-140-0x000000000080A000-0x0000000000813000-memory.dmp

      Filesize

      36KB

    • memory/1888-142-0x00000000007C0000-0x00000000007C9000-memory.dmp

      Filesize

      36KB

    • memory/1888-141-0x000000000080A000-0x0000000000813000-memory.dmp

      Filesize

      36KB

    • memory/1888-143-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/2780-134-0x00000000007BE000-0x00000000007C7000-memory.dmp

      Filesize

      36KB

    • memory/2780-135-0x00000000007BE000-0x00000000007C7000-memory.dmp

      Filesize

      36KB

    • memory/2780-136-0x00000000021A0000-0x00000000021A9000-memory.dmp

      Filesize

      36KB

    • memory/2780-137-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB