General

  • Target

    7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe

  • Size

    227KB

  • Sample

    240520-bmfhhadb7y

  • MD5

    4ca902918277ffd054ecac215e6b99bf

  • SHA1

    d5d14bcd985e9780289d97478291e4c011417acc

  • SHA256

    7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c

  • SHA512

    90e316478a2e2db35a3c2528b4c4c7d366daef43b11de969fff824750238b5dc706fdad63335635bd590327db3c8683163a2c77345bafd26a6cb2cc0a58ebcd7

  • SSDEEP

    6144:eloZM+rIkd8g+EtXHkv/iD41ckD2U7X85toGnnGdXb8e1mZi:IoZtL+EP81ckD2U7X85toGnnGpr

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1241760016504197170/0j7qdTF-jQkxTAE42PFFhDwVKvB2cH4I9KzaUsT507C4QGMlVWmUxQPY4iEhZptt1ykV

Targets

    • Target

      7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c.exe

    • Size

      227KB

    • MD5

      4ca902918277ffd054ecac215e6b99bf

    • SHA1

      d5d14bcd985e9780289d97478291e4c011417acc

    • SHA256

      7bc2687b0deb06309fb8b9faf78081f88cd6ee35a05b7a8ea5cfbc3594e7ea7c

    • SHA512

      90e316478a2e2db35a3c2528b4c4c7d366daef43b11de969fff824750238b5dc706fdad63335635bd590327db3c8683163a2c77345bafd26a6cb2cc0a58ebcd7

    • SSDEEP

      6144:eloZM+rIkd8g+EtXHkv/iD41ckD2U7X85toGnnGdXb8e1mZi:IoZtL+EP81ckD2U7X85toGnnGpr

    • Detect Umbral payload

    • Umbral

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

    • 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