General

  • Target
    processhacker-2.39-setup.exe
  • Size 2.7MB
  • Sample260710-gwk28sd17k
  • SHA256 87c3b9b12d6b65dac71853210bf5ab1ca4595a6ca23c09f0f74c498f16484e56
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1508970335016325170/JTMPsGC4IwOWyS9ly3b5Qv-Ye6Fa1unesnoiSCuJXhmIaT1JUoi6DLR6qLsiwnJTQ5DY

Extracted

Family
  • xworm

Version
  • 3.0

C2
  • Mrhexx6767-30743.portmap.host:30743

Mutex
  • 9B0VQAHTL00coELQ

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

Targets

    • Target
      processhacker-2.39-setup.exe
    • Size 2.7MB
    • SHA256 87c3b9b12d6b65dac71853210bf5ab1ca4595a6ca23c09f0f74c498f16484e56
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Detects Umbral payload

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Disables automatic submission of suspicious files to Microsoft by Windows Defender

      Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v16

Tasks