General

  • Target

    SecuriteInfo.com.W32.AIDetect.malware2.1853.24511

  • Size

    699KB

  • Sample

    210921-fejbmsgba8

  • MD5

    b2f1683e21cd12021af7ef3e0eef7674

  • SHA1

    39ec0e7d50737549dab38a48d3403c4177912274

  • SHA256

    76e3372675b50861ba373f9700db718087d9821cc619e00aca03912f22eeedd1

  • SHA512

    4ab9150f436d59e3019289fa4c84a45b3c0c73f4e96cdd3218747fc2c757b97fd3f8420a093f51f427ce86eea8910946ef7b7b326015bec7071904bcfd4ed9c9

Malware Config

Extracted

Family

vidar

Version

40.8

Botnet

828

C2

https://pavlovoler.tumblr.com/

Attributes
  • profile_id

    828

Targets

    • Target

      SecuriteInfo.com.W32.AIDetect.malware2.1853.24511

    • Size

      699KB

    • MD5

      b2f1683e21cd12021af7ef3e0eef7674

    • SHA1

      39ec0e7d50737549dab38a48d3403c4177912274

    • SHA256

      76e3372675b50861ba373f9700db718087d9821cc619e00aca03912f22eeedd1

    • SHA512

      4ab9150f436d59e3019289fa4c84a45b3c0c73f4e96cdd3218747fc2c757b97fd3f8420a093f51f427ce86eea8910946ef7b7b326015bec7071904bcfd4ed9c9

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • Deletes itself

    • Loads dropped DLL

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

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