a3121984cecddff33f8f6b01a06d18b314d50deab85cbfbc5657a0720f61f56e

General
Target

a3121984cecddff33f8f6b01a06d18b314d50deab85cbfbc5657a0720f61f56e

Size

782KB

Sample

211021-krtelaahbq

Score
10 /10
MD5

787cc165c68459ec64312260bee3bc0d

SHA1

035a01eb52fdedd8fd62733d9f41fc0e2d676d3b

SHA256

a3121984cecddff33f8f6b01a06d18b314d50deab85cbfbc5657a0720f61f56e

SHA512

0c7327829af3abe1cfe5b0f0ae64db2dc48686602e577cb75e88a6df10bd3163fe34f03b355e42e8c3c286983c2a9da28cf4fca27a0d8a4f671a8435c8bd6dc3

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

a3121984cecddff33f8f6b01a06d18b314d50deab85cbfbc5657a0720f61f56e

MD5

787cc165c68459ec64312260bee3bc0d

Filesize

782KB

Score
10/10
SHA1

035a01eb52fdedd8fd62733d9f41fc0e2d676d3b

SHA256

a3121984cecddff33f8f6b01a06d18b314d50deab85cbfbc5657a0720f61f56e

SHA512

0c7327829af3abe1cfe5b0f0ae64db2dc48686602e577cb75e88a6df10bd3163fe34f03b355e42e8c3c286983c2a9da28cf4fca27a0d8a4f671a8435c8bd6dc3

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 SystemCredentials in Files
  • Accesses 2FA software files, possible credential harvesting

    Tags

    TTPs

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

    Tags

    TTPs

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

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify 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