General

  • Target
    76930f4dc516570491aaf144c1937bb3c35238ed5af78a0d31dd645d4fabb0ff
  • Size 840KB
  • Sample210913-hfsb2sgbbq
  • SHA256 76930f4dc516570491aaf144c1937bb3c35238ed5af78a0d31dd645d4fabb0ff
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 40.5

Botnet
  • 517

C2
  • https://gheorghip.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target
      76930f4dc516570491aaf144c1937bb3c35238ed5af78a0d31dd645d4fabb0ff
    • Size 840KB
    • SHA256 76930f4dc516570491aaf144c1937bb3c35238ed5af78a0d31dd645d4fabb0ff
    • MD5 SHA1 SHA512
    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

      suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    • 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

    • Vidar Stealer

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks