General

  • Target
    c22ba8a93e20487fc1f37cbab8d1ece6.exe
  • Size 320KB
  • Sample211120-srbtjschhj
  • SHA256 d38921180eefad28ad164b96e902491cc9fe2a4f7a6a42ca08a06c6474d431de
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-file-host6.com/

  • http://host-host-file8.com/

  • http://srtuiyhuali.at/

  • http://fufuiloirtu.com/

  • http://amogohuigotuli.at/

  • http://novohudosovu.com/

  • http://brutuilionust.com/

  • http://bubushkalioua.com/

  • http://dumuilistrati.at/

  • http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family
  • tofsee

C2
  • quadoil.ru

  • lakeflex.ru

Extracted

Family
  • raccoon

Version
  • 1.8.3-hotfix

Botnet
  • ddf183af4241e3172885cf1b2c4c1fb4ee03d05a

Attributes
  • url4cnc

    http://91.219.236.27/capibar

    http://5.181.156.92/capibar

    http://91.219.236.207/capibar

    http://185.225.19.18/capibar

    http://91.219.237.227/capibar

    https://t.me/capibar

rc4.plain
rc4.plain

Extracted

Family
  • redline

C2
  • 185.159.80.90:38637

Extracted

Family
  • arkei

Botnet
  • Default

C2
  • http://file-file-host4.com/tratata.php

Extracted

Family
  • raccoon

Version
  • 1.8.3-hotfix

Botnet
  • 59885c564847bf29ddd9457b81c619998245ba90

Attributes
  • url4cnc

    http://91.219.236.27/opussenseus1

    http://5.181.156.92/opussenseus1

    http://91.219.236.207/opussenseus1

    http://185.225.19.18/opussenseus1

    http://91.219.237.227/opussenseus1

    https://t.me/opussenseus1

rc4.plain
rc4.plain

Extracted

Family
  • redline

Botnet
  • Sleeze

C2
  • 194.127.179.0:42417

Extracted

Family
  • vidar

Version
  • 48.6

Botnet
  • 706

C2
  • https://mastodon.online/@valhalla

  • https://koyu.space/@valhalla

Attributes
  • profile_id

    706

Targets

    • Target
      c22ba8a93e20487fc1f37cbab8d1ece6.exe
    • Size 320KB
    • SHA256 d38921180eefad28ad164b96e902491cc9fe2a4f7a6a42ca08a06c6474d431de
    • MD5 SHA1 SHA512
    • Arkei

      Arkei is an infostealer written in C++.

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Windows security bypass

    • suricata: ET MALWARE DCRAT Activity (GET)

      suricata: ET MALWARE DCRAT Activity (GET)

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

      suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

      suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

      suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    • suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil

      suricata: ET MALWARE Win32/Vidar Variant Stealer CnC Exfil

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Arkei Stealer Payload

    • Vidar Stealer

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks