General

  • Target

    38e2a94d654c66cfc127006e66cbb5f05567d9f6481c0bbefab2d06d39233924

  • Size

    718KB

  • Sample

    210722-6k8jn85jxs

  • MD5

    22332da14aeade590a409b8905bcff2b

  • SHA1

    b3c58bfe72452ae9d2d7ac501d2f4fab01a5c6d1

  • SHA256

    38e2a94d654c66cfc127006e66cbb5f05567d9f6481c0bbefab2d06d39233924

  • SHA512

    c3f012ab92409a537936769c5e151d8b9b90c1c546577fd2e4dcae410caa0f481073b5dccd72e6af8eb70b6ef051e30b6e2e8c019baca7b14aa14348cf08f929

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      38e2a94d654c66cfc127006e66cbb5f05567d9f6481c0bbefab2d06d39233924

    • Size

      718KB

    • MD5

      22332da14aeade590a409b8905bcff2b

    • SHA1

      b3c58bfe72452ae9d2d7ac501d2f4fab01a5c6d1

    • SHA256

      38e2a94d654c66cfc127006e66cbb5f05567d9f6481c0bbefab2d06d39233924

    • SHA512

      c3f012ab92409a537936769c5e151d8b9b90c1c546577fd2e4dcae410caa0f481073b5dccd72e6af8eb70b6ef051e30b6e2e8c019baca7b14aa14348cf08f929

    • 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 Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks