Analysis

  • max time kernel
    34s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-11-2022 10:26

General

  • Target

    3f59761f0f51300f5895377be284d8620df86a86f621632452fc4d87d21e16d1.dll

  • Size

    794KB

  • MD5

    2faeb16170a99a7cd281f065452fe3e0

  • SHA1

    bff844217710ea66084db307b3620cf04a295a9e

  • SHA256

    3f59761f0f51300f5895377be284d8620df86a86f621632452fc4d87d21e16d1

  • SHA512

    f8eb1dc13f53fd67cae0bf8cfab3bc83721820bd7910ca43d2ddb77048593aa0f8210d124643366a7e4daccbe963f853d71aadc2035e0c0f300fc35176464518

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0K:jDgtfRQUHPw06MoV2nwTBlhm8C

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\3f59761f0f51300f5895377be284d8620df86a86f621632452fc4d87d21e16d1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:368
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3f59761f0f51300f5895377be284d8620df86a86f621632452fc4d87d21e16d1.dll,#1
      2⤵
        PID:836

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/836-54-0x0000000000000000-mapping.dmp

    • memory/836-55-0x0000000076401000-0x0000000076403000-memory.dmp

      Filesize

      8KB