Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-10-2024 23:18

General

  • Target

    skuld.exe

  • Size

    3.2MB

  • MD5

    51ff57438f949975b4968961bc2642c4

  • SHA1

    cba4898a4d42746c39fe11ebcd4045d4630932b2

  • SHA256

    e2386170a278f82835c7c888d330fca7f058588cee728db554af82766f373520

  • SHA512

    cb1b62473c08d25b49a9c5618ef0399db7bccff983cb11dfd9ec624a203ec1ef3958eef9822672c94676a7cdd484334dca03387450915dddc593bf4541efe859

  • SSDEEP

    98304:9TlvH/VJ51LkW/0A3u+tjoOPztarROVJeE:bVKOu+pkROVJ

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1297685898183315507/dhotfNp8hFrKwfpwrk-upDYLgWkBSeuTImqAAVTnlndZgb3UvqPW2LZA6LIM7wOIg4Sp

Signatures

  • Skuld stealer

    An info stealer written in Go lang.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\skuld.exe
    "C:\Users\Admin\AppData\Local\Temp\skuld.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3400
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe
      2⤵
      • Views/modifies file attributes
      PID:2996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/3400-0-0x0000000000FE0000-0x0000000001A28000-memory.dmp

    Filesize

    10.3MB

  • memory/3400-2-0x0000000000FE0000-0x0000000001A28000-memory.dmp

    Filesize

    10.3MB