General

  • Target

    Use_55500_As_Passw0rd.rar

  • Size

    4.1MB

  • Sample

    230125-l83j9sff75

  • MD5

    fab26682ba1a848484d1b6ebda73106d

  • SHA1

    c0f7c0704bf5fc937fba2048c6c45ad25a970fde

  • SHA256

    4a09459d095915e4ea732d5fd9aa453e0a05603baa711696bcc9c9f479cbcecf

  • SHA512

    abfe723376fd80e6068e16d5a1931143adf67743b75c08299b7c0891468578f90e02f01403079e1fad5e376d9224160fe92cc52a8d0bc91e57289c9ad59acd68

  • SSDEEP

    98304:S4gq6GfAH3NqJseMsfLJk/PtYZPD4LUPw7HyFo:S4gq6G446ePLJk/6DpPwrN

Malware Config

Extracted

Family

vidar

Version

2.2

Botnet

15

C2

https://t.me/litlebey

https://steamcommunity.com/profiles/76561199472399815

Attributes
  • profile_id

    15

Targets

    • Target

      Setup.exe

    • Size

      470.6MB

    • MD5

      5909ae2b1c956d4c13b1e6041fdb7f9d

    • SHA1

      8e500369fda8625e0c153c07aabc3ca383d49d44

    • SHA256

      b4b353183fc52980c539601936d8a3774e78f4f8d44e64e8e7082427eed06dbf

    • SHA512

      de385015cb140cbeed61dfd6f923a1b8db054e5cb062e6ca8be0a94de9bccbe3ef3cb1e9fcceb14a0aa64f327e35efc449c47e7d15cb9e358ef8bc80ba2411d2

    • SSDEEP

      49152:FDHrATS9GPSiK6Wl6n+XXZEk4fvXAFXr4ND9pv/OSt5GjhCbhontKH5ck6JjH:FDHoPnWoUSXhjpv//t0jhC+ntkOn

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

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

Virtualization/Sandbox Evasion

1
T1497

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

3
T1005

Tasks