General

  • Target

    b28ae6e171960d7d93015edcff7f3894a6a992c9ea1fc796958f33f3d82f06b5

  • Size

    730KB

  • Sample

    210722-79njfcxdla

  • MD5

    95f7445f84254050fa2641952e877130

  • SHA1

    ca377360d067004c3876a991ee0d73b5ce5db000

  • SHA256

    b28ae6e171960d7d93015edcff7f3894a6a992c9ea1fc796958f33f3d82f06b5

  • SHA512

    6c2878bbfb8a8080e7441e4e116d7826e000833d608c9b194685e68f6ba742808331831e97d52601e60569fedff362edbb54894df9102f15f1a604f16ac68537

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      b28ae6e171960d7d93015edcff7f3894a6a992c9ea1fc796958f33f3d82f06b5

    • Size

      730KB

    • MD5

      95f7445f84254050fa2641952e877130

    • SHA1

      ca377360d067004c3876a991ee0d73b5ce5db000

    • SHA256

      b28ae6e171960d7d93015edcff7f3894a6a992c9ea1fc796958f33f3d82f06b5

    • SHA512

      6c2878bbfb8a8080e7441e4e116d7826e000833d608c9b194685e68f6ba742808331831e97d52601e60569fedff362edbb54894df9102f15f1a604f16ac68537

    • 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