General

  • Target

    5147fae709ad8d42579ae6c990fa4c461abca6f306e5af96ddf1fc488ace0a07

  • Size

    730KB

  • Sample

    210722-yzfmvsa3va

  • MD5

    c72a8d5dafcb4e61faaf072bf00ae6e7

  • SHA1

    a31fb0fe14726eb782bf2fb96efadb14d1d1cbbc

  • SHA256

    5147fae709ad8d42579ae6c990fa4c461abca6f306e5af96ddf1fc488ace0a07

  • SHA512

    de9e82073ad8dfaadf2f5ba2ad0f4446d8f8d928f5355002ba23af316ac70b27864b979d55af619eeade066b0cbfe87ce6827e8dd0f0c587fb722cf5d34a6857

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      5147fae709ad8d42579ae6c990fa4c461abca6f306e5af96ddf1fc488ace0a07

    • Size

      730KB

    • MD5

      c72a8d5dafcb4e61faaf072bf00ae6e7

    • SHA1

      a31fb0fe14726eb782bf2fb96efadb14d1d1cbbc

    • SHA256

      5147fae709ad8d42579ae6c990fa4c461abca6f306e5af96ddf1fc488ace0a07

    • SHA512

      de9e82073ad8dfaadf2f5ba2ad0f4446d8f8d928f5355002ba23af316ac70b27864b979d55af619eeade066b0cbfe87ce6827e8dd0f0c587fb722cf5d34a6857

    • 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