General

  • Target

    MajorRevision.exe

  • Size

    684KB

  • Sample

    220731-qz8r5shacl

  • MD5

    9e8ad9eebb2904eaeba5b124f89ed4e3

  • SHA1

    7fade6d9d87676bf727855c6f2e211ceb55ce951

  • SHA256

    fec53b388671f2f82fd8c743a3695f432037caffe5f2e04ea77c206809efd048

  • SHA512

    3e0ae54d0284234f0843ca925eec73a0df213c8808439e237344f2e10d669702c141d559e8a24ef55eb8481b232248a2ed198931b5f135090b355621e44c2255

Malware Config

Extracted

Family

warzonerat

C2

toomuchego.ydns.eu:5200

Targets

    • Target

      MajorRevision.exe

    • Size

      684KB

    • MD5

      9e8ad9eebb2904eaeba5b124f89ed4e3

    • SHA1

      7fade6d9d87676bf727855c6f2e211ceb55ce951

    • SHA256

      fec53b388671f2f82fd8c743a3695f432037caffe5f2e04ea77c206809efd048

    • SHA512

      3e0ae54d0284234f0843ca925eec73a0df213c8808439e237344f2e10d669702c141d559e8a24ef55eb8481b232248a2ed198931b5f135090b355621e44c2255

    • 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.

    • Program crash

    • 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