General

  • Target

    https://www.upload.ee/files/14882274/888RAT_1.1.1.rar.html

  • Sample

    230129-wddyjafh92

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1069311507558584401/MezRUfnne_aTi-N8ydVGpMBnYd-GliWkHS9kfR0wOOsNUqdTZ5VwXzzls-KkIDdU1tOH

Targets

    • Target

      https://www.upload.ee/files/14882274/888RAT_1.1.1.rar.html

    • Mercurial Grabber Stealer

      Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

    • Looks for VirtualBox Guest Additions in registry

    • Executes dropped EXE

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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.

    • Maps connected drives based on registry

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

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks