Analysis

  • max time kernel
    155s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2023 20:15

General

  • Target

    90cfe0ef71e872618262229519f6a6c7.exe

  • Size

    139KB

  • MD5

    90cfe0ef71e872618262229519f6a6c7

  • SHA1

    245565b890c9f721f91a994575b993f712ad72ed

  • SHA256

    aee9d6522dc07d7e4454fb98190fdbe1befecd8dfc1ed0cec07dc59509100d9a

  • SHA512

    60fcfe7f4232b9a7200539b6724de659460ee0231c0fc090db691e3735fd03b976b7e76687b0c7e6e2aba36ebe450ee1ed06f1c06171b3d8e371b610ccbd1ad8

  • SSDEEP

    3072:8MshuDzxveNuCRcoMSJ+yQ/wZcBMETlee:8GINirI+FYc9xee

Score
10/10

Malware Config

Extracted

Family

systembc

C2

pzlkxadvert475.xyz:4044

pzfdmserv275.xyz:4044

Signatures

  • SystemBC

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

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Uses Tor communications 1 TTPs

    Malware can proxy its traffic through Tor for more anonymity.

  • Drops file in Windows directory 2 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\90cfe0ef71e872618262229519f6a6c7.exe
    "C:\Users\Admin\AppData\Local\Temp\90cfe0ef71e872618262229519f6a6c7.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:2688
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2688 -s 480
      2⤵
      • Program crash
      PID:232
  • C:\ProgramData\ibwtn\llul.exe
    C:\ProgramData\ibwtn\llul.exe start
    1⤵
    • Executes dropped EXE
    PID:1436
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2688 -ip 2688
    1⤵
      PID:2380

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\ibwtn\llul.exe

      Filesize

      139KB

      MD5

      90cfe0ef71e872618262229519f6a6c7

      SHA1

      245565b890c9f721f91a994575b993f712ad72ed

      SHA256

      aee9d6522dc07d7e4454fb98190fdbe1befecd8dfc1ed0cec07dc59509100d9a

      SHA512

      60fcfe7f4232b9a7200539b6724de659460ee0231c0fc090db691e3735fd03b976b7e76687b0c7e6e2aba36ebe450ee1ed06f1c06171b3d8e371b610ccbd1ad8

    • memory/1436-11-0x0000000003450000-0x0000000003550000-memory.dmp

      Filesize

      1024KB

    • memory/1436-12-0x00000000001C0000-0x00000000001C9000-memory.dmp

      Filesize

      36KB

    • memory/1436-13-0x0000000000400000-0x0000000003311000-memory.dmp

      Filesize

      47.1MB

    • memory/1436-19-0x0000000003450000-0x0000000003550000-memory.dmp

      Filesize

      1024KB

    • memory/2688-1-0x0000000003330000-0x0000000003430000-memory.dmp

      Filesize

      1024KB

    • memory/2688-2-0x0000000003320000-0x0000000003329000-memory.dmp

      Filesize

      36KB

    • memory/2688-3-0x0000000000400000-0x0000000003311000-memory.dmp

      Filesize

      47.1MB

    • memory/2688-14-0x0000000003330000-0x0000000003430000-memory.dmp

      Filesize

      1024KB