General

  • Target

    1277c694442a92362494b95ec1272aa639b7df16f9ee758c15645aa4db785781

  • Size

    850KB

  • Sample

    211020-f2rarshegq

  • MD5

    d0e8bc1b656ec32a50812ceb07435343

  • SHA1

    ef1b1bedc2ecd2725c978d81a916004a0a1915ed

  • SHA256

    1277c694442a92362494b95ec1272aa639b7df16f9ee758c15645aa4db785781

  • SHA512

    dedcc72bace826efd383bc637b071fa08a25765e1625539b6cadafe85877b4873711a926b7be6776eda986da5ea129347c0be330305c728997a8cb64dada37f3

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

      1277c694442a92362494b95ec1272aa639b7df16f9ee758c15645aa4db785781

    • Size

      850KB

    • MD5

      d0e8bc1b656ec32a50812ceb07435343

    • SHA1

      ef1b1bedc2ecd2725c978d81a916004a0a1915ed

    • SHA256

      1277c694442a92362494b95ec1272aa639b7df16f9ee758c15645aa4db785781

    • SHA512

      dedcc72bace826efd383bc637b071fa08a25765e1625539b6cadafe85877b4873711a926b7be6776eda986da5ea129347c0be330305c728997a8cb64dada37f3

    • 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

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

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