General

  • Target

    8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27

  • Size

    231KB

  • Sample

    250121-g61knszrgs

  • MD5

    729cf3dc131a564c3384ec6a3cf387ce

  • SHA1

    3401e42954a2c5de84d2c32ab97e69db54144bd1

  • SHA256

    8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27

  • SHA512

    9bdf9ac4ace3dbef33adaff6db5e5a157f1f7967613c88b26e51e5c7032b20018007bbc6726812482e2dcf8c8ef8f0a62eb779efe4cf0e893f215faab70bf351

  • SSDEEP

    6144:RloZM+rIkd8g+EtXHkv/iD4+Qz/jpaC93op7mGz2tb8e1moJboi:joZtL+EP8+Qz/jpaC93op7mGz6zbR

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1329832303958036501/OYMJTMKLoKnNNc8NB3edzfuIkkJN4DCHXM19OwX-N-0jQ8kBSP32werfqj4BgoqgvqTB

Targets

    • Target

      8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27

    • Size

      231KB

    • MD5

      729cf3dc131a564c3384ec6a3cf387ce

    • SHA1

      3401e42954a2c5de84d2c32ab97e69db54144bd1

    • SHA256

      8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27

    • SHA512

      9bdf9ac4ace3dbef33adaff6db5e5a157f1f7967613c88b26e51e5c7032b20018007bbc6726812482e2dcf8c8ef8f0a62eb779efe4cf0e893f215faab70bf351

    • SSDEEP

      6144:RloZM+rIkd8g+EtXHkv/iD4+Qz/jpaC93op7mGz2tb8e1moJboi:joZtL+EP8+Qz/jpaC93op7mGz6zbR

    • Detect Umbral payload

    • Umbral

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

    • Umbral family

    • 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

    • Deletes itself

    • 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