General

  • Target

    Umbral.exe

  • Size

    229KB

  • Sample

    250414-d9tprazwcz

  • MD5

    577b6f4a24d7da6c31b25061ba2ca003

  • SHA1

    d225ba9696ca5654adaaca34df547cd79277f492

  • SHA256

    6be3e35737657d88cea9f770fbc4d0129ac97130ed394f051947abfbe65934cf

  • SHA512

    d84e775ff672a282fa06efb23a7739a0075cae45337bc7682da6b47e44abf7a6e8a685787f684b28010d35f47bd14b2f461f328926e3b02eb84586af92dbdeca

  • SSDEEP

    6144:lloZM0rIkd8g+EtXHkv/iD4Z1HmVjgULtyD1Ac5bs+b8e1mvFi:noZDL+EP8Z1HmVjgULtyD1Ac5b+M

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1361184461818957834/qD4ALwONjb3c2fG9FUK_P1hfm1_pQ2jJYZVkji5-II_gYxtUPlUbVO8h766GTDmS_nDd

Targets

    • Target

      Umbral.exe

    • Size

      229KB

    • MD5

      577b6f4a24d7da6c31b25061ba2ca003

    • SHA1

      d225ba9696ca5654adaaca34df547cd79277f492

    • SHA256

      6be3e35737657d88cea9f770fbc4d0129ac97130ed394f051947abfbe65934cf

    • SHA512

      d84e775ff672a282fa06efb23a7739a0075cae45337bc7682da6b47e44abf7a6e8a685787f684b28010d35f47bd14b2f461f328926e3b02eb84586af92dbdeca

    • SSDEEP

      6144:lloZM0rIkd8g+EtXHkv/iD4Z1HmVjgULtyD1Ac5bs+b8e1mvFi:noZDL+EP8Z1HmVjgULtyD1Ac5b+M

    • 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.

    • 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 v16

Tasks

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