Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 08:46

General

  • Target

    4a1b977d36bfa87e86463e6f7057462c013d955d48ca20d2fa741156e299b892.dll

  • Size

    575KB

  • MD5

    331b943a367fc823c8e2280b34da4640

  • SHA1

    0ee280f60abc03f0a857087f8df7cd6516bde2b4

  • SHA256

    4a1b977d36bfa87e86463e6f7057462c013d955d48ca20d2fa741156e299b892

  • SHA512

    f1c83e4db84b4d40ffde8dc7ffefd1d6e645dabecde5de005f3960924b0bcbc67a79ab40c499713b758362a7fb6a3022b420e6247bd17a71adf28762f295040a

  • SSDEEP

    3072:oDKpt9sSR0HUHPwZWLnWVfEAzV2INwTBftZmc+z+f3Q0E:oDgtfRQUHPw06MoV2swTBlxm8s

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\4a1b977d36bfa87e86463e6f7057462c013d955d48ca20d2fa741156e299b892.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a1b977d36bfa87e86463e6f7057462c013d955d48ca20d2fa741156e299b892.dll,#1
      2⤵
        PID:2368

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads