Overview

overview

10

Static

static

10

sws.exe

windows7-x64

10

sws.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    sws.exe
  • Size 227KB
  • Sample250202-yed12awkdv
  • SHA256 c6e3deb37384306e5bc08d51469e978c001ee54cf0ad8baa59942eda2c849b6b
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
umbraldiscoveryexecutionspywarestealer

Malware Config

Extracted

Family

  • umbral

C2

  • https://discord.com/api/webhooks/1331257513638887536/9OSX1gMlVliEUbP7sIkSIJlX6LWHFAQpDIJpwnKAch62qgn0-CI4Xc-VOkJND5Gz_WF_

Targets

    • Target
      sws.exe
    • Size 227KB
    • SHA256 c6e3deb37384306e5bc08d51469e978c001ee54cf0ad8baa59942eda2c849b6b
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    umbraldiscoveryexecutionspywarestealer

    • Detect Umbral payload

    • Umbral

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

      stealerumbral

    • Umbral family

      umbral

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Drops file in Drivers directory

    • Deletes itself

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks