General

  • Target

    4381a971a0a7dbafd0b24b36a16d566ab32b435885ff9aa0ea0580ba74afe17a

  • Size

    781KB

  • Sample

    211021-1l79kabgbq

  • MD5

    7c403e30c63f6e155b30acaf6ec82b1a

  • SHA1

    83f12c73b2fa2f96f43d4dd31bac255ecce0b984

  • SHA256

    4381a971a0a7dbafd0b24b36a16d566ab32b435885ff9aa0ea0580ba74afe17a

  • SHA512

    7eb0932f52f3b9513b23fcfcfb13a51cc2c21fa12ebefbb5ad21e96af26efcbcf77606074776a21c0dda0f27d96a4fc84607c6884650aefe1eb662c8a6f3f395

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

      4381a971a0a7dbafd0b24b36a16d566ab32b435885ff9aa0ea0580ba74afe17a

    • Size

      781KB

    • MD5

      7c403e30c63f6e155b30acaf6ec82b1a

    • SHA1

      83f12c73b2fa2f96f43d4dd31bac255ecce0b984

    • SHA256

      4381a971a0a7dbafd0b24b36a16d566ab32b435885ff9aa0ea0580ba74afe17a

    • SHA512

      7eb0932f52f3b9513b23fcfcfb13a51cc2c21fa12ebefbb5ad21e96af26efcbcf77606074776a21c0dda0f27d96a4fc84607c6884650aefe1eb662c8a6f3f395

    • 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