General

  • Target

    e4e225600a2cbba34718ce5c4009a2b6d6c0e64a8d9a6cb379dc097476ebaac3

  • Size

    854KB

  • Sample

    211023-2qrcaaddaq

  • MD5

    043c089cfb36f4078aef16166fad4b5a

  • SHA1

    46371fd76840eb5ebd14bbaa0ed02834a2f865b2

  • SHA256

    e4e225600a2cbba34718ce5c4009a2b6d6c0e64a8d9a6cb379dc097476ebaac3

  • SHA512

    38a3667265cbba4f62c96a56b1be03a99720c453a94176aa29f60f4d7774be35ab6470fc1a8f7685a9d39711f31be323b3daff07edbd09290671935377829214

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

      e4e225600a2cbba34718ce5c4009a2b6d6c0e64a8d9a6cb379dc097476ebaac3

    • Size

      854KB

    • MD5

      043c089cfb36f4078aef16166fad4b5a

    • SHA1

      46371fd76840eb5ebd14bbaa0ed02834a2f865b2

    • SHA256

      e4e225600a2cbba34718ce5c4009a2b6d6c0e64a8d9a6cb379dc097476ebaac3

    • SHA512

      38a3667265cbba4f62c96a56b1be03a99720c453a94176aa29f60f4d7774be35ab6470fc1a8f7685a9d39711f31be323b3daff07edbd09290671935377829214

    • 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