General

  • Target

    JJSploit.exe

  • Size

    305KB

  • Sample

    241205-agpnjsyjgw

  • MD5

    515ebbb324353bb1d90cf1da9d7979a7

  • SHA1

    4f8c4e8d9a4d187fcefd3f83629cdbb0919d2281

  • SHA256

    8ce258cbd6a16100e4426017ba842a2822c0cd0e59ba361cf731d474d45a090d

  • SHA512

    b45bb1d0e9beee86d702a3c9d6490398b260f65311b7c04d97cf4eb8df85ba2081f752aa1ef5b0df350ed14796e42b636f559c4cd689f3a416dfc8ed6fa64e42

  • SSDEEP

    6144:ZloZMzrIkd8g+EtXHkv/iD4/pmHAmB5Kb/Cwhl0Hyb8e1mcDiDDIQgbUX07P1d7:roZcL+EP8/pmHAmB5Kb/Cwhl0ekDk5d7

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1305739020529045617/mC83XwO606BUXBYGCOS54tg62bfXdokTu6f0THs2Nit_oCx2sem7ZnmP0IZG3hgdHkdL

Targets

    • Target

      JJSploit.exe

    • Size

      305KB

    • MD5

      515ebbb324353bb1d90cf1da9d7979a7

    • SHA1

      4f8c4e8d9a4d187fcefd3f83629cdbb0919d2281

    • SHA256

      8ce258cbd6a16100e4426017ba842a2822c0cd0e59ba361cf731d474d45a090d

    • SHA512

      b45bb1d0e9beee86d702a3c9d6490398b260f65311b7c04d97cf4eb8df85ba2081f752aa1ef5b0df350ed14796e42b636f559c4cd689f3a416dfc8ed6fa64e42

    • SSDEEP

      6144:ZloZMzrIkd8g+EtXHkv/iD4/pmHAmB5Kb/Cwhl0Hyb8e1mcDiDDIQgbUX07P1d7:roZcL+EP8/pmHAmB5Kb/Cwhl0ekDk5d7

    • 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