Analysis

  • max time kernel
    142s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2022 04:31

General

  • Target

    d81a3242692f6d155c7d5bf450ad91ac1cd2063fd2539bda1619fab740b2ca41.dll

  • Size

    550KB

  • MD5

    0d77b669e3d550ee0edfb0f6db502200

  • SHA1

    231cfa2aa2fa2213020e4ee6c417ef45f74833a7

  • SHA256

    d81a3242692f6d155c7d5bf450ad91ac1cd2063fd2539bda1619fab740b2ca41

  • SHA512

    f794e8c494c7d0265a12f5827d4ac1e46a7da0d31fdeeee615e25473f027358d7042ef93ca23a2c7845301591e42810beef65205013645b8cf4f8edccb69acf5

  • SSDEEP

    3072:o6pU5Y1DXnbMn7Uzkop61/dAzV2O3XwTBftrm2YedGf3QKZDl:o6C5AXbMn7UI1FoV2gwTBlrIckPr

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\d81a3242692f6d155c7d5bf450ad91ac1cd2063fd2539bda1619fab740b2ca41.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2828
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\d81a3242692f6d155c7d5bf450ad91ac1cd2063fd2539bda1619fab740b2ca41.dll,#1
      2⤵
        PID:3368

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads