General

  • Target

    first_payload.exe

  • Size

    503KB

  • Sample

    220731-rbjc1sgaa5

  • MD5

    f801b47ec91f5f75b0f5804506665b14

  • SHA1

    6ca1c47f85abaed4a3cc414b6200360ca658b2c5

  • SHA256

    62ae48d339e52a1b5be82e703025f2be10d6025f97fd784d40f2781d6ee886ec

  • SHA512

    1e3910895b9bbd23d4adf174683f83ce8b000dba606034bfb2bfaa18ffbf2293ebc4eb47bdebda46d2f326f74c963be005ddb440aa2449a21918c40a8d974322

Malware Config

Extracted

Family

warzonerat

C2

toomuchego.ydns.eu:5200

Targets

    • Target

      first_payload.exe

    • Size

      503KB

    • MD5

      f801b47ec91f5f75b0f5804506665b14

    • SHA1

      6ca1c47f85abaed4a3cc414b6200360ca658b2c5

    • SHA256

      62ae48d339e52a1b5be82e703025f2be10d6025f97fd784d40f2781d6ee886ec

    • SHA512

      1e3910895b9bbd23d4adf174683f83ce8b000dba606034bfb2bfaa18ffbf2293ebc4eb47bdebda46d2f326f74c963be005ddb440aa2449a21918c40a8d974322

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger payload

    • UAC bypass

    • WarzoneRat, AveMaria

      WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

    • Windows security bypass

    • XpertRAT

      XpertRAT is a remote access trojan with various capabilities.

    • Adds policy Run key to start application

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Windows security modification

    • Accesses Microsoft Outlook accounts

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • 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

2
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

3
T1089

Modify Registry

6
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Email Collection

2
T1114

Tasks