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Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/01/2024, 09:33

General

  • Target

    40814d97a4160e16800cc12ad8998fb0.dll

  • Size

    80KB

  • MD5

    40814d97a4160e16800cc12ad8998fb0

  • SHA1

    774b55ca36e8f731a62aa1d34b20c5ac99572d5e

  • SHA256

    b52886c98fb846b4f702f935e4bf61e9284d01ce2666c06581965b2093a6ae8e

  • SHA512

    de547a6642bc0a09f463d4dbdb59c01f08dd867aff299c979b26bd4f2b92ce2f5e300c22326686c0213af52680304502e98c39dc31f8410dea9162044a3662e7

  • SSDEEP

    1536:PUMWDtEKPPyAzdqW2SufHMOQQwncFIgPCm:4DtECPyAz1pCH8QHmgP

Malware Config

Signatures

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\40814d97a4160e16800cc12ad8998fb0.dll,#1
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    PID:1940
  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\40814d97a4160e16800cc12ad8998fb0.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1940-0-0x00000000000D0000-0x00000000000D9000-memory.dmp

    Filesize

    36KB

  • memory/1940-3-0x00000000000D0000-0x00000000000D9000-memory.dmp

    Filesize

    36KB