General

  • Target
    2a2ec59e9b27855bb8cbf49aee6bec42.exe
  • Size 644KB
  • Sample210903-jgzcesfhcl
  • SHA256 ca3291276c2ca7e712a191660b9c19eee9395d4d5f5851a5c7fadae04cabc4d4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 40.4

Botnet
  • 1008

C2
  • https://romkaxarit.tumblr.com/

Attributes
  • profile_id

    1008

Targets

    • Target
      2a2ec59e9b27855bb8cbf49aee6bec42.exe
    • Size 644KB
    • SHA256 ca3291276c2ca7e712a191660b9c19eee9395d4d5f5851a5c7fadae04cabc4d4
    • MD5 SHA1 SHA512
    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • 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

    • 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

    • Checks installed software on the system

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

MITRE ATT&CK Enterprise v6

Tasks