General

  • Target

    bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e

  • Size

    234KB

  • Sample

    240612-d9a8eazeph

  • MD5

    65e7b5e4dd86e66cddd279dced3c31e5

  • SHA1

    5b1836bd0519a866848d5867b42c9182066109bf

  • SHA256

    bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e

  • SHA512

    ccb978eddac4b06c992db66db63e08964f94181fb068c76281d5c6e13e69b85723a89780110f3a5fb7570a79ca24dff8d78270f13f1faa419a98715c1fbd3f14

  • SSDEEP

    6144:tloZM9rIkd8g+EtXHkv/iD4WeANbYMTiqL9Y0hnT+Y8e1mki:voZOL+EP8WeANbYMTiqL9Y0hFI

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1249603922847338587/DEY5Xr9R1aQvy3CvoiaXSP5jJfO5TpGj07lrnS_vZzUXZKj83-TpKHRAA1znmvBvCvvI

Targets

    • Target

      bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e

    • Size

      234KB

    • MD5

      65e7b5e4dd86e66cddd279dced3c31e5

    • SHA1

      5b1836bd0519a866848d5867b42c9182066109bf

    • SHA256

      bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e

    • SHA512

      ccb978eddac4b06c992db66db63e08964f94181fb068c76281d5c6e13e69b85723a89780110f3a5fb7570a79ca24dff8d78270f13f1faa419a98715c1fbd3f14

    • SSDEEP

      6144:tloZM9rIkd8g+EtXHkv/iD4WeANbYMTiqL9Y0hnT+Y8e1mki:voZOL+EP8WeANbYMTiqL9Y0hFI

    • Detect Umbral payload

    • Umbral

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

    • Detects executables attemping to enumerate video devices using WMI

    • Detects executables containing possible sandbox analysis VM names

    • Detects executables containing possible sandbox analysis VM usernames

    • Detects executables containing possible sandbox system UUIDs

    • 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