Analysis

  • max time kernel
    91s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 07:53

General

  • Target

    bcaf84c7c4a0d1eda5fd1c0268c5682439880bceca8decc0101f11341730bdbf.exe

  • Size

    1.1MB

  • MD5

    6258939b770c7710805ece7e4c6ff6db

  • SHA1

    ca8a2ac342113094ff967f122d58e6492ce57070

  • SHA256

    bcaf84c7c4a0d1eda5fd1c0268c5682439880bceca8decc0101f11341730bdbf

  • SHA512

    76d5d41a7eebe373af9be26111e8da1d39dc70026d653930231846fa5a42f9366fa50be72746e611b8bd75736b8d7493a94332244617083493f2fcb94fbfa488

  • SSDEEP

    24576:wo0peow6/GmPN760aABzSbE0nc4v2o6IsQPTYDIH17GwoYw:ITbVSrz6nWH1GP/

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bcaf84c7c4a0d1eda5fd1c0268c5682439880bceca8decc0101f11341730bdbf.exe
    "C:\Users\Admin\AppData\Local\Temp\bcaf84c7c4a0d1eda5fd1c0268c5682439880bceca8decc0101f11341730bdbf.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\search.cmd
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\search.cmd"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: GetForegroundWindowSpam
      PID:800
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del c:\users\admin\appdata\local\temp\BCAF84~1.EXE >> NUL
      2⤵
        PID:4692

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\search.cmd

            Filesize

            1.1MB

            MD5

            6258939b770c7710805ece7e4c6ff6db

            SHA1

            ca8a2ac342113094ff967f122d58e6492ce57070

            SHA256

            bcaf84c7c4a0d1eda5fd1c0268c5682439880bceca8decc0101f11341730bdbf

            SHA512

            76d5d41a7eebe373af9be26111e8da1d39dc70026d653930231846fa5a42f9366fa50be72746e611b8bd75736b8d7493a94332244617083493f2fcb94fbfa488

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\search.cmd

            Filesize

            1.1MB

            MD5

            6258939b770c7710805ece7e4c6ff6db

            SHA1

            ca8a2ac342113094ff967f122d58e6492ce57070

            SHA256

            bcaf84c7c4a0d1eda5fd1c0268c5682439880bceca8decc0101f11341730bdbf

            SHA512

            76d5d41a7eebe373af9be26111e8da1d39dc70026d653930231846fa5a42f9366fa50be72746e611b8bd75736b8d7493a94332244617083493f2fcb94fbfa488