General

  • Target

    Settings.exe

  • Size

    575KB

  • Sample

    250404-1bmj4svvet

  • MD5

    f6b9a7b049f67e96f3440598b133bfe6

  • SHA1

    968116843fe315d8786070a9745c14b5039d415c

  • SHA256

    5069f377047dcab276edcf1a759208fcd6723b11dc41a77b0e4ca273a976f699

  • SHA512

    235a8b11c6c3274da2cb660e6e6592588779682e82708ba15a8ab71b6ed4df259a9f0f746474d42a0cbb040fe5eb39276d006cb63fbdd51f13d15c64956f46ba

  • SSDEEP

    12288:d++zuhAfzEhSFYBSYiMpPU/anILVap192ti/Ajt:nmvhSWNiMVbMaotr

Malware Config

Extracted

Family

umbral

C2

https://discordapp.com/api/webhooks/1357765742434717747/kDbvfLYHBAGDInmRBSFI2ybqxiaeMAp3iQtloLjdcA7NcBJ1xBLrGexQcyKSOZNwvdMD

Targets

    • Target

      Settings.exe

    • Size

      575KB

    • MD5

      f6b9a7b049f67e96f3440598b133bfe6

    • SHA1

      968116843fe315d8786070a9745c14b5039d415c

    • SHA256

      5069f377047dcab276edcf1a759208fcd6723b11dc41a77b0e4ca273a976f699

    • SHA512

      235a8b11c6c3274da2cb660e6e6592588779682e82708ba15a8ab71b6ed4df259a9f0f746474d42a0cbb040fe5eb39276d006cb63fbdd51f13d15c64956f46ba

    • SSDEEP

      12288:d++zuhAfzEhSFYBSYiMpPU/anILVap192ti/Ajt:nmvhSWNiMVbMaotr

    • Detect Umbral payload

    • Detect Xworm Payload

    • RevengeRAT

      Remote-access trojan with a wide range of capabilities.

    • Revengerat family

    • 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

    • RevengeRat Executable

    • 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.

    • Executes dropped EXE

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks