General

  • Target

    Umbral.exe

  • Size

    229KB

  • Sample

    250105-q9bkdswlds

  • MD5

    30ccfee6c8e2ebc782110e8aa1a4c8ba

  • SHA1

    392871b1e3628da65161b2dfd40da407939071ae

  • SHA256

    e22e92f946d1914fe0557fdbd725c8199651f571e9b160ad2f59571a308147b0

  • SHA512

    8cec6d2f9b5f60006adefb820225c56add9da2b50f2f3de58481ebbcbed9a859b30a4e9dcba57112f142fc63e24652ed962146c564635c88af12d0a998c390bd

  • SSDEEP

    6144:9loZMLrIkd8g+EtXHkv/iD4CkUeRa43TwxJc6rrSHfb8e1m4Ki:foZ0L+EP8CheRa43TwxJc6rrSbp

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1325458256612687883/LdnxAjFB_1VpbzrSvMpWrsQHqJlCOeQGtlZtNBGOB797ZTlKsuDtoSjo8vXIPSdLrhIZ

Targets

    • Target

      Umbral.exe

    • Size

      229KB

    • MD5

      30ccfee6c8e2ebc782110e8aa1a4c8ba

    • SHA1

      392871b1e3628da65161b2dfd40da407939071ae

    • SHA256

      e22e92f946d1914fe0557fdbd725c8199651f571e9b160ad2f59571a308147b0

    • SHA512

      8cec6d2f9b5f60006adefb820225c56add9da2b50f2f3de58481ebbcbed9a859b30a4e9dcba57112f142fc63e24652ed962146c564635c88af12d0a998c390bd

    • SSDEEP

      6144:9loZMLrIkd8g+EtXHkv/iD4CkUeRa43TwxJc6rrSHfb8e1m4Ki:foZ0L+EP8CheRa43TwxJc6rrSbp

    • 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

    • 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