General

  • Target

    57d6ac008ef76ec0317c3df54ab142af1ab8bd4b16d22c3eccad6d346d88464f

  • Size

    855KB

  • Sample

    211024-mrcsysegej

  • MD5

    ff984f6a2770ebf542d747de67acc164

  • SHA1

    4f3741933a7dca972888100736ba4ea905548814

  • SHA256

    57d6ac008ef76ec0317c3df54ab142af1ab8bd4b16d22c3eccad6d346d88464f

  • SHA512

    c3293b0731f0340df5df2df448a2fade74713673bc331bf74f27e2870551339b7d2c8d9e31852fdce6b2be5129e259bcba786b7da9696cf35e763df098cf9386

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

      57d6ac008ef76ec0317c3df54ab142af1ab8bd4b16d22c3eccad6d346d88464f

    • Size

      855KB

    • MD5

      ff984f6a2770ebf542d747de67acc164

    • SHA1

      4f3741933a7dca972888100736ba4ea905548814

    • SHA256

      57d6ac008ef76ec0317c3df54ab142af1ab8bd4b16d22c3eccad6d346d88464f

    • SHA512

      c3293b0731f0340df5df2df448a2fade74713673bc331bf74f27e2870551339b7d2c8d9e31852fdce6b2be5129e259bcba786b7da9696cf35e763df098cf9386

    • 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