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Analysis

  • max time kernel
    96s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2025, 20:13

General

  • Target

    JaffaCakes118_38d3ef59908649a92b60d4af7e57f14d.dll

  • Size

    354KB

  • MD5

    38d3ef59908649a92b60d4af7e57f14d

  • SHA1

    bc2c31ad2f71ba29bc00860c731b9bbafdaecc66

  • SHA256

    24cdf72cffd9e2741cb98a0b0c2999ebd43213bb745bff99b09aef31522503c0

  • SHA512

    c55ce681d8d2a09493085314c3b269746b6514b59b06a34a58219c4f46d49aa9d7cd67911b59acdc52e32ccaf13e0798b68ddb9194bb54b65b6d56903ec10416

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0A:jDgtfRQUHPw06MoV2nwTBlhm84

Malware Config

Signatures

  • Yunsip

    Remote backdoor which communicates with a C2 server to receive commands.

  • Yunsip family
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38d3ef59908649a92b60d4af7e57f14d.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38d3ef59908649a92b60d4af7e57f14d.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3580

Network

MITRE ATT&CK Enterprise v15

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Downloads