ab279cfb5f6340d71aca6fd7cb5d66844be83ebb582b93a7b93230f598fc6b5d

General
Target

ab279cfb5f6340d71aca6fd7cb5d66844be83ebb582b93a7b93230f598fc6b5d

Size

851KB

Sample

211020-rv6mnaaafq

Score
10 /10
MD5

a8e7d4fa0654318f38d94f7bdb3b2636

SHA1

3eb6adfb1a82a454460df843e36b6d0f42de6add

SHA256

ab279cfb5f6340d71aca6fd7cb5d66844be83ebb582b93a7b93230f598fc6b5d

SHA512

728e901fd09f14336c7aafad371e752c91bb277667457e624d0a8e8d019beb47481d343707b1a7a4b450185659388548b19768496853507345c78ddef2325fa5

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

ab279cfb5f6340d71aca6fd7cb5d66844be83ebb582b93a7b93230f598fc6b5d

MD5

a8e7d4fa0654318f38d94f7bdb3b2636

Filesize

851KB

Score
10 /10
SHA1

3eb6adfb1a82a454460df843e36b6d0f42de6add

SHA256

ab279cfb5f6340d71aca6fd7cb5d66844be83ebb582b93a7b93230f598fc6b5d

SHA512

728e901fd09f14336c7aafad371e752c91bb277667457e624d0a8e8d019beb47481d343707b1a7a4b450185659388548b19768496853507345c78ddef2325fa5

Tags

Signatures

  • Detected Djvu ransomware

  • Djvu Ransomware

    Description

    Ransomware which is a variant of the STOP family.

    Tags

  • Vidar

    Description

    Vidar is an infostealer based on Arkei stealer.

    Tags

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

    Description

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    Tags

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

    Description

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

    Tags

  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    Description

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    Tags

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

    Description

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

    Tags

  • Vidar Stealer

    Tags

  • Downloads MZ/PE file

  • Executes dropped EXE

  • Loads dropped DLL

  • Modifies file permissions

    Tags

    TTPs

    File Permissions Modification
  • Reads user/profile data of web browsers

    Description

    Infostealers often target stored browser data, which can include saved credentials etc.

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Accesses 2FA software files, possible credential harvesting

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Accesses cryptocurrency files/wallets, possible credential harvesting

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Adds Run key to start application

    Tags

    TTPs

    Registry Run Keys / Startup Folder Modify Registry
  • Checks installed software on the system

    Description

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

    Tags

    TTPs

    Query Registry
  • Looks up external IP address via web service

    Description

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix
Command and Control
    Credential Access
    Execution
      Exfiltration
        Impact
          Initial Access
            Lateral Movement
              Privilege Escalation