General

  • Target

    obxod266dev.exe

  • Size

    329KB

  • Sample

    250223-mrst6svmt4

  • MD5

    31fc82eeaed45f2389b57ffb9d8f6ea2

  • SHA1

    fd46d4e307b09a372a3bfc0d88b87eeccaf77912

  • SHA256

    dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

  • SHA512

    418bca3b27a8354e559de8e1333ebc8ff42a5d4f07b42a0ec95775c9a52feb1d61a00006ceefef3be8e30dc07c0fb3123440413a2b16d8d9cc6e468cb9d5c962

  • SSDEEP

    6144:3aDaK7MooumCpZSApAWl2IenY7YDlw+JmS1r8+CMCX:3LK7sk2IKYkp/mYPCX

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1342862584386420817/8iDLBPWkMbkgW0Lx9Tlnezr6EGJYKsdRBZ8GJHI66h0NchvKorRU-U6oiQsKR-OZeqD9

Extracted

Family

xworm

C2

25.ip.gl.ply.gg:59054

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

Targets

    • Target

      obxod266dev.exe

    • Size

      329KB

    • MD5

      31fc82eeaed45f2389b57ffb9d8f6ea2

    • SHA1

      fd46d4e307b09a372a3bfc0d88b87eeccaf77912

    • SHA256

      dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

    • SHA512

      418bca3b27a8354e559de8e1333ebc8ff42a5d4f07b42a0ec95775c9a52feb1d61a00006ceefef3be8e30dc07c0fb3123440413a2b16d8d9cc6e468cb9d5c962

    • SSDEEP

      6144:3aDaK7MooumCpZSApAWl2IenY7YDlw+JmS1r8+CMCX:3LK7sk2IKYkp/mYPCX

    • Detect Umbral payload

    • Detect Xworm Payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Umbral family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • 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 v15

Tasks