General

  • Target

    78afd90b8841dc9b145b928e2223fc4a23280e205b52fcf482a032450e3e9b5a

  • Size

    854KB

  • Sample

    211023-hsw6rsdbbp

  • MD5

    15c4c4a2d67e2f55b99cde2015a756cf

  • SHA1

    3c23172b37c85872075ec86148de9dabde01266d

  • SHA256

    78afd90b8841dc9b145b928e2223fc4a23280e205b52fcf482a032450e3e9b5a

  • SHA512

    51aaa9529663a4134850ee11330d3e5f2e421e6a7118eaaa58c8a14a4541edaee677cc7a23b2015565af1c621fe7f552866841107d0fad0c201063f0f1267204

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/lancer

Targets

    • Target

      78afd90b8841dc9b145b928e2223fc4a23280e205b52fcf482a032450e3e9b5a

    • Size

      854KB

    • MD5

      15c4c4a2d67e2f55b99cde2015a756cf

    • SHA1

      3c23172b37c85872075ec86148de9dabde01266d

    • SHA256

      78afd90b8841dc9b145b928e2223fc4a23280e205b52fcf482a032450e3e9b5a

    • SHA512

      51aaa9529663a4134850ee11330d3e5f2e421e6a7118eaaa58c8a14a4541edaee677cc7a23b2015565af1c621fe7f552866841107d0fad0c201063f0f1267204

    • 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