General

  • Target

    79f3143ac8ecd0876d303b852620f479.exe

  • Size

    229KB

  • Sample

    220319-xlck4sgcbk

  • MD5

    79f3143ac8ecd0876d303b852620f479

  • SHA1

    63b39e7cd8afd8a26d3c984d4e6fa2beaa87b9a2

  • SHA256

    81ec5293c1be63d2bdb173f258830914b3dfd094159211f1703b4666eeca1cbc

  • SHA512

    692e31b7a8b0342262d2d28bf25b0a597884cf62c472c1583b3e924a937eaf0241ba1d1303ae7dd1c8dc4794a3e29f4ac62b8eab3d00ab5be7dfc16e0b2edf0c

Malware Config

Extracted

Family

vidar

Version

50.9

Botnet

1177

C2

https://ieji.de/@sam7al

https://busshi.moe/@sam0al

Attributes
  • profile_id

    1177

Extracted

Family

vidar

Version

50.9

Botnet

937

C2

https://ieji.de/@sam7al

https://busshi.moe/@sam0al

Attributes
  • profile_id

    937

Targets

    • Target

      79f3143ac8ecd0876d303b852620f479.exe

    • Size

      229KB

    • MD5

      79f3143ac8ecd0876d303b852620f479

    • SHA1

      63b39e7cd8afd8a26d3c984d4e6fa2beaa87b9a2

    • SHA256

      81ec5293c1be63d2bdb173f258830914b3dfd094159211f1703b4666eeca1cbc

    • SHA512

      692e31b7a8b0342262d2d28bf25b0a597884cf62c472c1583b3e924a937eaf0241ba1d1303ae7dd1c8dc4794a3e29f4ac62b8eab3d00ab5be7dfc16e0b2edf0c

    • Modifies Windows Defender Real-time Protection settings

    • OnlyLogger

      A tiny loader that uses IPLogger to get its payload.

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • Socelars

      Socelars is an infostealer targeting browser cookies and credit card credentials.

    • VKeylogger

      A keylogger first seen in Nov 2020.

    • VKeylogger Payload

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE GCleaner Downloader Activity M5

      suricata: ET MALWARE GCleaner Downloader Activity M5

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • 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 HTTP POST Pattern

      suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    • suricata: ET MALWARE Win32/Spy.Socelars.S CnC Activity M3

      suricata: ET MALWARE Win32/Spy.Socelars.S CnC Activity M3

    • suricata: ET MALWARE Win32/Unk.HRESQ! MultiDownloader Checkin M2

      suricata: ET MALWARE Win32/Unk.HRESQ! MultiDownloader Checkin M2

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

    • OnlyLogger Payload

    • Vidar Stealer

    • 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

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

7
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks