General

  • Target

    Nigger.exe

  • Size

    229KB

  • Sample

    240830-z5nhtswemf

  • MD5

    b193c3e09096fe11bdec07aa6979c372

  • SHA1

    07f36f115e4a41bb4b1312d6ff889ec78e895475

  • SHA256

    bebc73eac9a6a619320ae91da7081d60f1ef3529b0b4ac3968afea5493374683

  • SHA512

    6e39a6a8ae2e9b44065791aca4cc9bd305ac221ba135d654bfa397ce8b52f0bfcbf45eb7dcbed43d3cd028c4ee123d7722f1a3cf55ecbc017fdb1b51905a0e7a

  • SSDEEP

    6144:9loZM+rIkd8g+EtXHkv/iD4K0W7p3cw/CeHp0AV+7b8e1mSi:foZtL+EP8K0W7p3cw/CeHp0AVE0

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1279187968363335730/KgEmSaRaf-PAW_bOz42umy_7vXT9iX0dpAsy-Ge4nFSSs9yefJNXlGJpk-kaFbECHG2c

Targets

    • Target

      Nigger.exe

    • Size

      229KB

    • MD5

      b193c3e09096fe11bdec07aa6979c372

    • SHA1

      07f36f115e4a41bb4b1312d6ff889ec78e895475

    • SHA256

      bebc73eac9a6a619320ae91da7081d60f1ef3529b0b4ac3968afea5493374683

    • SHA512

      6e39a6a8ae2e9b44065791aca4cc9bd305ac221ba135d654bfa397ce8b52f0bfcbf45eb7dcbed43d3cd028c4ee123d7722f1a3cf55ecbc017fdb1b51905a0e7a

    • SSDEEP

      6144:9loZM+rIkd8g+EtXHkv/iD4K0W7p3cw/CeHp0AV+7b8e1mSi:foZtL+EP8K0W7p3cw/CeHp0AVE0

    • Detect Umbral payload

    • Umbral

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • Reads user/profile data of web browsers

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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks