General

  • Target

    450f025a9a114a4e1b31986fa166633d9395a27189cfd64850d74ba0917ff846

  • Size

    771KB

  • Sample

    210721-yld8y3nhfs

  • MD5

    93fd664b208058a4b113fb52cd8fa640

  • SHA1

    8e85d3127654c99a2ae6ddc7b042e7ea1e4e481a

  • SHA256

    450f025a9a114a4e1b31986fa166633d9395a27189cfd64850d74ba0917ff846

  • SHA512

    a8759a87b506252fd402f12ba11791e1d0c01da9778823acd70e4587ee1b893dd33e09c1280111629845df8188761e26f9a1baa7cbbbab858b21e12af897c866

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      450f025a9a114a4e1b31986fa166633d9395a27189cfd64850d74ba0917ff846

    • Size

      771KB

    • MD5

      93fd664b208058a4b113fb52cd8fa640

    • SHA1

      8e85d3127654c99a2ae6ddc7b042e7ea1e4e481a

    • SHA256

      450f025a9a114a4e1b31986fa166633d9395a27189cfd64850d74ba0917ff846

    • SHA512

      a8759a87b506252fd402f12ba11791e1d0c01da9778823acd70e4587ee1b893dd33e09c1280111629845df8188761e26f9a1baa7cbbbab858b21e12af897c866

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • 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