General

  • Target

    blasted.zip

  • Size

    90KB

  • Sample

    250105-trnc1s1nbn

  • MD5

    c0c1f4d447518ec3466b3196a6bc8bca

  • SHA1

    9cf2ec0c7bfb0ba18e85fe5c79d61165cb14dbbe

  • SHA256

    2761a5557845a1135de74de2cdb687900d3bd244d9d1966dd195cbfba61be36b

  • SHA512

    27fa369739f241bdfe06331dad818b23685c5c0cd0d2f76498706809685e28f60ad51ae310da768dda20bfece81da1a2dca964fcd4ac289f61872b5c0a9a0443

  • SSDEEP

    1536:a7k84F02OAAVLwSnX6BkLWU+tgX0I6BZftKXPfK1wg6/9MJAfbOYa1FSsediF:/3tqLL647kBJAXa1wg6/HbOYKekF

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1318597375148687402/hi7z2fLgO4RRvXrp-fdHKsRpZGU-JbAhrm4wxVPBT5TIEA3KCmg8Y6RBurUI3jSJhEQ5

Targets

    • Target

      blasted.exe

    • Size

      229KB

    • MD5

      21e6f749bf59138d1528e64a34a88903

    • SHA1

      4f2447e8476dad93e39aac775a7bf91c2c8cd4b8

    • SHA256

      9952e7c346539dc361b2bda461eebf047ce00a2e3eb2bb3ab6f3fa0c0b5d87d5

    • SHA512

      2cad6e33730a69bc31378ae4f502f37f6d8f6d1fd85c17830108ab6b056f1b5994bf8254530194df655e433689c2c22e53fea94c5958f8c1ee55f938a6e5486c

    • SSDEEP

      6144:dloZM9rIkd8g+EtXHkv/iD4ZF3A6YXzQAp8aLLyfxmb8e1m6i:/oZmL+EP8ZF3A6YXzQAp8aLLyIo

    • 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.

    • 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