General

  • Target

    4e466981de9e4527ad5fc08206bde7eba9fde278ced3c968e755fdc2584dadbd

  • Size

    855KB

  • Sample

    211024-bw4xfsdfdn

  • MD5

    cc5513d360369fcd417fab92d66de49f

  • SHA1

    b659a2c37044d5c851b50e568a72ec9938dad4a0

  • SHA256

    4e466981de9e4527ad5fc08206bde7eba9fde278ced3c968e755fdc2584dadbd

  • SHA512

    20fd79881b57f2f37337ba86c44a9d8cbb78616515c0cdb8b6853aac427c5c17af7f9e996d24e57de09ec42731ba752abacadb16d9046def1ade56bdc8952b8e

Malware Config

Extracted

Family

vidar

Version

41.5

Botnet

517

C2

https://mas.to/@xeroxxx

Attributes
  • profile_id

    517

Extracted

Family

djvu

C2

http://rlrz.org/fhsgtsspen6

Targets

    • Target

      4e466981de9e4527ad5fc08206bde7eba9fde278ced3c968e755fdc2584dadbd

    • Size

      855KB

    • MD5

      cc5513d360369fcd417fab92d66de49f

    • SHA1

      b659a2c37044d5c851b50e568a72ec9938dad4a0

    • SHA256

      4e466981de9e4527ad5fc08206bde7eba9fde278ced3c968e755fdc2584dadbd

    • SHA512

      20fd79881b57f2f37337ba86c44a9d8cbb78616515c0cdb8b6853aac427c5c17af7f9e996d24e57de09ec42731ba752abacadb16d9046def1ade56bdc8952b8e

    • 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