Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-10-2024 12:18

General

  • Target

    b04cbfc9aa32b54e232837b5e3b110885a59350b9967573dd311e58abc9f90c5N.dll

  • Size

    550KB

  • MD5

    1c50d27bf46c8ae217bde009706cdb20

  • SHA1

    29f29a9738371d863f0c2b37e577a09e61740ba2

  • SHA256

    b04cbfc9aa32b54e232837b5e3b110885a59350b9967573dd311e58abc9f90c5

  • SHA512

    7a1437f520d62bb15efc9d64081b30f358ec1c525efd34d28402d81eaf02a89646e6e3ea360c16ea62db25fbcf7b53e353847be56ddcd68e9661bc696e28bebb

  • SSDEEP

    6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYY2:o6RI1Fo/wT3cJYYYYYYYYYYYY2

Malware Config

Signatures

  • Yunsip

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\b04cbfc9aa32b54e232837b5e3b110885a59350b9967573dd311e58abc9f90c5N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b04cbfc9aa32b54e232837b5e3b110885a59350b9967573dd311e58abc9f90c5N.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2500

Network

MITRE ATT&CK Enterprise v15

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Downloads