General

  • Target

    13eaec1adb4c48e91244e39e61fc77e1e287c4243ad45bffb2a9cb90a5d9f2a4

  • Size

    693KB

  • Sample

    210926-pwe5zsehb9

  • MD5

    b649c949cbf60499ea44c441a5a7bd04

  • SHA1

    0852d060e1fb478e2bac3b09ada6169a9abfac92

  • SHA256

    13eaec1adb4c48e91244e39e61fc77e1e287c4243ad45bffb2a9cb90a5d9f2a4

  • SHA512

    b53503961c5cebde86b04f043a67541657d815784e2e5c52b220fcbc125fff387befc798dd5174d5a395bbbb184a87a210611efc5505622008e1fdcafadd31ae

Malware Config

Targets

    • Target

      13eaec1adb4c48e91244e39e61fc77e1e287c4243ad45bffb2a9cb90a5d9f2a4

    • Size

      693KB

    • MD5

      b649c949cbf60499ea44c441a5a7bd04

    • SHA1

      0852d060e1fb478e2bac3b09ada6169a9abfac92

    • SHA256

      13eaec1adb4c48e91244e39e61fc77e1e287c4243ad45bffb2a9cb90a5d9f2a4

    • SHA512

      b53503961c5cebde86b04f043a67541657d815784e2e5c52b220fcbc125fff387befc798dd5174d5a395bbbb184a87a210611efc5505622008e1fdcafadd31ae

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

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