Analysis

  • max time kernel
    90s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-10-2022 16:09

General

  • Target

    ee33b4aa8c28f0aef965abc53f15624dc387601d87054180fb205b792a3cb8b1.dll

  • Size

    708KB

  • MD5

    59f40dd7935ff265f7c79a4f1366d8d0

  • SHA1

    3c7bd34d1bb6bd9403b26034568be9209eb8107c

  • SHA256

    ee33b4aa8c28f0aef965abc53f15624dc387601d87054180fb205b792a3cb8b1

  • SHA512

    86e1d647f70cc689e12c86cd7f87ede0dcfd2a91dfeb4c004e4c1991a34e0a9ef00c3ed1e823a697257e2c973049930cb2eee197ac665e3bffbd715a563eb4e0

  • SSDEEP

    6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYb:o6RI1Fo/wT3cJYYYYYYYYYYYYb

Score
10/10

Malware Config

Signatures

  • Yunsip

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ee33b4aa8c28f0aef965abc53f15624dc387601d87054180fb205b792a3cb8b1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ee33b4aa8c28f0aef965abc53f15624dc387601d87054180fb205b792a3cb8b1.dll,#1
      2⤵
        PID:4368

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/4368-132-0x0000000000000000-mapping.dmp