General

  • Target

    ac949874daaa7008edec3c2896378a2bf8cab73f08977afb831e671387f8d8cf

  • Size

    717KB

  • Sample

    210722-9sxffb27wj

  • MD5

    7bf390e96dac855e726727ee7ee645c5

  • SHA1

    a6b452e78052ac0172fe6e6f05cc8a9c56f57977

  • SHA256

    ac949874daaa7008edec3c2896378a2bf8cab73f08977afb831e671387f8d8cf

  • SHA512

    fef35e19226e2fa68084e6b3a35acd74a04a3d3e14963cf7c622da6c85a5c3d7683e0a8b4fe1816513682b6a303d4d527e87a96d52d7604882541ae8738cf66e

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      ac949874daaa7008edec3c2896378a2bf8cab73f08977afb831e671387f8d8cf

    • Size

      717KB

    • MD5

      7bf390e96dac855e726727ee7ee645c5

    • SHA1

      a6b452e78052ac0172fe6e6f05cc8a9c56f57977

    • SHA256

      ac949874daaa7008edec3c2896378a2bf8cab73f08977afb831e671387f8d8cf

    • SHA512

      fef35e19226e2fa68084e6b3a35acd74a04a3d3e14963cf7c622da6c85a5c3d7683e0a8b4fe1816513682b6a303d4d527e87a96d52d7604882541ae8738cf66e

    • 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