General

  • Target

    1bc8123dc37a7a0d14f3eb9e2b17a0ae2224b6eae24b058e8ff67207e0998c14

  • Size

    781KB

  • Sample

    211021-rvs2kabcfq

  • MD5

    94af208e44f9a7c70f026da058c2955a

  • SHA1

    768da1c29aae12a5f178999d9e6e12c5acdfb388

  • SHA256

    1bc8123dc37a7a0d14f3eb9e2b17a0ae2224b6eae24b058e8ff67207e0998c14

  • SHA512

    e3ca206d676edf94eb1889428bc3200e47bf046bacfb3b4bf65857754939a43bbfb0bda00765f2ae4fe4dea27e14c8442e80bcaec6958e50b8c13c3423d5cbde

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

      1bc8123dc37a7a0d14f3eb9e2b17a0ae2224b6eae24b058e8ff67207e0998c14

    • Size

      781KB

    • MD5

      94af208e44f9a7c70f026da058c2955a

    • SHA1

      768da1c29aae12a5f178999d9e6e12c5acdfb388

    • SHA256

      1bc8123dc37a7a0d14f3eb9e2b17a0ae2224b6eae24b058e8ff67207e0998c14

    • SHA512

      e3ca206d676edf94eb1889428bc3200e47bf046bacfb3b4bf65857754939a43bbfb0bda00765f2ae4fe4dea27e14c8442e80bcaec6958e50b8c13c3423d5cbde

    • 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