General

  • Target

    76483adfe01810b5472d71bf6b50a699.exe

  • Size

    663KB

  • Sample

    210902-zag4e9bt4a

  • MD5

    76483adfe01810b5472d71bf6b50a699

  • SHA1

    b2ef6512409bd35cff3ed33fad3116883c2af459

  • SHA256

    e671deac46898cd1ce138deb64f63c2a7d09f40b593213e2337b0ffa08aab8e7

  • SHA512

    64b3d0e53dad585cc858a8a317fb870034c9947568a2c2febae93483df577d5670aa4a34382c148d91f07e652b346749346d4beaa8e99665fa15002313c5ebf4

Malware Config

Extracted

Family

vidar

Version

40.3

Botnet

1008

C2

https://lenko349.tumblr.com/

Attributes
  • profile_id

    1008

Targets

    • Target

      76483adfe01810b5472d71bf6b50a699.exe

    • Size

      663KB

    • MD5

      76483adfe01810b5472d71bf6b50a699

    • SHA1

      b2ef6512409bd35cff3ed33fad3116883c2af459

    • SHA256

      e671deac46898cd1ce138deb64f63c2a7d09f40b593213e2337b0ffa08aab8e7

    • SHA512

      64b3d0e53dad585cc858a8a317fb870034c9947568a2c2febae93483df577d5670aa4a34382c148d91f07e652b346749346d4beaa8e99665fa15002313c5ebf4

    • 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