Analysis

  • max time kernel
    143s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-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 3 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
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 4 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:2544
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {165CE59E-F756-4250-B8B5-E2824BAC0DB4} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\ProgramData\lmbnb\qxtqjcw.exe
      C:\ProgramData\lmbnb\qxtqjcw.exe start
      2⤵
      • Executes dropped EXE
      PID:1668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\lmbnb\qxtqjcw.exe

    Filesize

    139KB

    MD5

    90cfe0ef71e872618262229519f6a6c7

    SHA1

    245565b890c9f721f91a994575b993f712ad72ed

    SHA256

    aee9d6522dc07d7e4454fb98190fdbe1befecd8dfc1ed0cec07dc59509100d9a

    SHA512

    60fcfe7f4232b9a7200539b6724de659460ee0231c0fc090db691e3735fd03b976b7e76687b0c7e6e2aba36ebe450ee1ed06f1c06171b3d8e371b610ccbd1ad8

  • memory/1668-11-0x0000000003390000-0x0000000003490000-memory.dmp

    Filesize

    1024KB

  • memory/1668-12-0x0000000000400000-0x0000000003311000-memory.dmp

    Filesize

    47.1MB

  • memory/1668-18-0x0000000003390000-0x0000000003490000-memory.dmp

    Filesize

    1024KB

  • memory/2544-1-0x0000000003430000-0x0000000003530000-memory.dmp

    Filesize

    1024KB

  • memory/2544-2-0x0000000000020000-0x0000000000029000-memory.dmp

    Filesize

    36KB

  • memory/2544-3-0x0000000000400000-0x0000000003311000-memory.dmp

    Filesize

    47.1MB

  • memory/2544-15-0x0000000003430000-0x0000000003530000-memory.dmp

    Filesize

    1024KB