General

  • Target

    7968bcab60bbcd6917a5dc879872c19d9294b3357d752500ad77810bed22ad74

  • Size

    758KB

  • Sample

    210727-84ya25l6vs

  • MD5

    e4c75856a71f1579ce22d6e8f41841a3

  • SHA1

    b92704764a1d8f65b2115e128c96af2e8b0c06a0

  • SHA256

    7968bcab60bbcd6917a5dc879872c19d9294b3357d752500ad77810bed22ad74

  • SHA512

    e392e54beae8861f0a564d1008b04f02d2f9026a361fb8e7beb59f0a87ed48928775c6c6e1e84a7a5921655d725f8bb30acb23d8ce2aea70d49869dbf5191c68

Malware Config

Extracted

Family

vidar

Version

39.7

Botnet

517

C2

https://shpak125.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      7968bcab60bbcd6917a5dc879872c19d9294b3357d752500ad77810bed22ad74

    • Size

      758KB

    • MD5

      e4c75856a71f1579ce22d6e8f41841a3

    • SHA1

      b92704764a1d8f65b2115e128c96af2e8b0c06a0

    • SHA256

      7968bcab60bbcd6917a5dc879872c19d9294b3357d752500ad77810bed22ad74

    • SHA512

      e392e54beae8861f0a564d1008b04f02d2f9026a361fb8e7beb59f0a87ed48928775c6c6e1e84a7a5921655d725f8bb30acb23d8ce2aea70d49869dbf5191c68

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    • 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/Megumin/Oski Stealer Data Exfil

    • 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