Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 17:12

General

  • Target

    a0728c984fe286765e32faa45115097f41b7d6b4503425fe422bea5ae30819f6N.dll

  • Size

    770KB

  • MD5

    97e9df20c225f5832826d6d2e39fb7b0

  • SHA1

    cd038704adabcc09f5b9adb728aec84147b87ea9

  • SHA256

    a0728c984fe286765e32faa45115097f41b7d6b4503425fe422bea5ae30819f6

  • SHA512

    7ce2088c49e7ee0b28fc1fe1825a9f6cee0326456c0fbe9b1dea1020d39c3345f97bb206124050b27babe6e8b76f925fea9b010a83a97cf053635e503fa49913

  • SSDEEP

    12288:o6RI1Fo/wT3cJYYYYYYYYYYYYmF/RMp86F/RMp8N:oKYT3cQ/uF/u0

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\a0728c984fe286765e32faa45115097f41b7d6b4503425fe422bea5ae30819f6N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4308
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a0728c984fe286765e32faa45115097f41b7d6b4503425fe422bea5ae30819f6N.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3484

Network

MITRE ATT&CK Enterprise v15

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Downloads