General

  • Target

    2346.exe

  • Size

    227KB

  • Sample

    250207-wtbs4s1pcw

  • MD5

    655ca1882c79d1ea1ece22cae2db50ed

  • SHA1

    1f95b7867988d18e75758115df75c361d2fab98e

  • SHA256

    b3f62c0db95fb236f635c3a8e416603e58331599d4e0100cda2ed20a4881b87a

  • SHA512

    775a760b89832445cdac95c6294bf2d8a7da3caee6717c5a48461dc497cea107cf27431ca184f0cff81a2df5c7965c25bdc75d8845f714e756b90e770a4b520a

  • SSDEEP

    6144:+loZM9rIkd8g+EtXHkv/iD4mWwdGvFuW5v8VHCCH27b8e1mNi:ooZOL+EP8vwdGvFuW5v8VHCCHUv

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1337486050230272133/V4qBXJTKO1Jdk53FphdTH0-hZvUSoQFN9PRqmSA8WogFE3-ril5gZWJI2Es9IxMrd7PP

Targets

    • Target

      2346.exe

    • Size

      227KB

    • MD5

      655ca1882c79d1ea1ece22cae2db50ed

    • SHA1

      1f95b7867988d18e75758115df75c361d2fab98e

    • SHA256

      b3f62c0db95fb236f635c3a8e416603e58331599d4e0100cda2ed20a4881b87a

    • SHA512

      775a760b89832445cdac95c6294bf2d8a7da3caee6717c5a48461dc497cea107cf27431ca184f0cff81a2df5c7965c25bdc75d8845f714e756b90e770a4b520a

    • SSDEEP

      6144:+loZM9rIkd8g+EtXHkv/iD4mWwdGvFuW5v8VHCCH27b8e1mNi:ooZOL+EP8vwdGvFuW5v8VHCCHUv

    • 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.

    • 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