Analysis

  • max time kernel
    144s
  • max time network
    164s
  • 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

    331399dec1fcfedad29ee722e83a0a007c0027fe3840b4898c77007f3c8c58b4.dll

  • Size

    511KB

  • MD5

    cf272ccc82f2fd92967d6dced15551a0

  • SHA1

    ba95df564c0de4dd6fcbd55f65bb693d716bdfd9

  • SHA256

    331399dec1fcfedad29ee722e83a0a007c0027fe3840b4898c77007f3c8c58b4

  • SHA512

    287599cd6f40896e27644d58dd5beb34e4865288bf8310c06463bd4fcb92ffc89bbabd75f3ffd5867b4596072582dc215d5be7eee0b070b64fac7e6da1008a37

  • SSDEEP

    3072:oDKpt9sSR0HUHPwZWLnWVfEAzV2INwTBftZmc+z+f3Q0K:oDgtfRQUHPw06MoV2swTBlxm8C

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\331399dec1fcfedad29ee722e83a0a007c0027fe3840b4898c77007f3c8c58b4.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\331399dec1fcfedad29ee722e83a0a007c0027fe3840b4898c77007f3c8c58b4.dll,#1
      2⤵
        PID:2688

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads