General

  • Target

    b01beeb1e5331f73cf0a30720545b81e89eb7a9163064c12f4b2a7ac37716b29

  • Size

    853KB

  • Sample

    211022-2e441adaer

  • MD5

    1f762973f3ef9c0eb84f1e72739241e8

  • SHA1

    8180a2cf4557ddd2999e14ea168f7b7c72b1095e

  • SHA256

    b01beeb1e5331f73cf0a30720545b81e89eb7a9163064c12f4b2a7ac37716b29

  • SHA512

    5e755530b6974ea5d1a36bdfae69d02ce750fcaa2095d971ed84ff12cedfeca403214cc41f0f319e8d5d9d9b35c66c115a15afbb499a80060c2b5c5e2482188a

Malware Config

Extracted

Family

vidar

Version

41.5

Botnet

517

C2

https://mas.to/@xeroxxx

Attributes
  • profile_id

    517

Extracted

Family

djvu

C2

http://rlrz.org/fhsgtsspen6

Targets

    • Target

      b01beeb1e5331f73cf0a30720545b81e89eb7a9163064c12f4b2a7ac37716b29

    • Size

      853KB

    • MD5

      1f762973f3ef9c0eb84f1e72739241e8

    • SHA1

      8180a2cf4557ddd2999e14ea168f7b7c72b1095e

    • SHA256

      b01beeb1e5331f73cf0a30720545b81e89eb7a9163064c12f4b2a7ac37716b29

    • SHA512

      5e755530b6974ea5d1a36bdfae69d02ce750fcaa2095d971ed84ff12cedfeca403214cc41f0f319e8d5d9d9b35c66c115a15afbb499a80060c2b5c5e2482188a

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

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

      suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

      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 Stealer Client Data Upload

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

      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