Analysis

  • max time kernel
    118s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    15-10-2023 15:05

General

  • Target

    b32ca1c6e254318327ecf8abc09668d0_dll32_JC.dll

  • Size

    194KB

  • MD5

    b32ca1c6e254318327ecf8abc09668d0

  • SHA1

    6e7c2abe7c048d434f018812e7e1fdd550642a2b

  • SHA256

    71824a0f2ead319c706c3de9c3591574bcab05bfbc10e06765f0d699108f823d

  • SHA512

    a3ce88578c1d2152cdac01a132a7799beee6052332d9ed6ffc3b7db76725afbfa0f042e82a483504fe3027375b94ad41199222b7491568e9ab494d0cafe0b537

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0h:jDgtfRQUHPw06MoV2nwTBlhm8Z

Score
10/10

Malware Config

Signatures

  • Yunsip

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

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\b32ca1c6e254318327ecf8abc09668d0_dll32_JC.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:856
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b32ca1c6e254318327ecf8abc09668d0_dll32_JC.dll,#1
      2⤵
        PID:2200

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads