General

  • Target

    https://cdn.discordapp.com/attachments/1180592646717190237/1182064237032509522/NostalgiaPaste.rar?ex=65df9f1b&is=65cd2a1b&hm=3c0a61ea2247e3f698bf71ed771fd9dd3966154830e2f85283fa05c17b99e044&

  • Sample

    240221-spzslaad76

Score
10/10

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1180592646717190237/1182064237032509522/NostalgiaPaste.rar?ex=65df9f1b&is=65cd2a1b&hm=3c0a61ea2247e3f698bf71ed771fd9dd3966154830e2f85283fa05c17b99e044&

    Score
    10/10
    • Detect Umbral payload

    • Umbral

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks