Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2024 03:35

General

  • Target

    55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll

  • Size

    739KB

  • MD5

    ffdff067b5262cd0c16f99f4099dc190

  • SHA1

    0b7593397d61ec50c820bac83e96b5e8086dcc61

  • SHA256

    55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3c

  • SHA512

    b01dfbf8e1fe7643ee10c61831f540267f7fcb8d7fea4b98948e40f4d30538adc6cd88c2fcb8cc08f7c57a2cab2fef0b1ade94f502ef5bf0774125b3f934a3c8

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0n:jDgtfRQUHPw06MoV2nwTBlhm8P

Malware Config

Signatures

  • Yunsip

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

  • Yunsip family
  • 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 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4736
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4860

Network

MITRE ATT&CK Enterprise v15

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Downloads