General

  • Target

    1b5623f996bf9921e77dfc72ee3e253035e187083d03786fa674819e84f85cd4

  • Size

    201KB

  • Sample

    221205-nhqh5aea96

  • MD5

    b5a9eddc6bd8e549dbfeb667648ee195

  • SHA1

    f1b3cadab75a9ecf3f42878d1a1c36c19e776b6d

  • SHA256

    1b5623f996bf9921e77dfc72ee3e253035e187083d03786fa674819e84f85cd4

  • SHA512

    72eda3dfdcaba04780a16235d2af962365cdd52f2203edfa97a23add0653b14106616404e5489a0e89695ad9a576918211d7b7ac93e971906567269ea9e47a93

  • SSDEEP

    3072:Ksq8rAo1NImQnb6mi5LlYihUhG9ef5awUzdhTDw02rwjUQmRJ:dQnb6dlVhN9V9z002sjgR

Malware Config

Extracted

Family

systembc

C2

109.205.214.18:443

Targets

    • Target

      1b5623f996bf9921e77dfc72ee3e253035e187083d03786fa674819e84f85cd4

    • Size

      201KB

    • MD5

      b5a9eddc6bd8e549dbfeb667648ee195

    • SHA1

      f1b3cadab75a9ecf3f42878d1a1c36c19e776b6d

    • SHA256

      1b5623f996bf9921e77dfc72ee3e253035e187083d03786fa674819e84f85cd4

    • SHA512

      72eda3dfdcaba04780a16235d2af962365cdd52f2203edfa97a23add0653b14106616404e5489a0e89695ad9a576918211d7b7ac93e971906567269ea9e47a93

    • SSDEEP

      3072:Ksq8rAo1NImQnb6mi5LlYihUhG9ef5awUzdhTDw02rwjUQmRJ:dQnb6dlVhN9V9z002sjgR

    • Detects Smokeloader packer

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • SystemBC

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks