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Analysis

  • max time kernel
    142s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2024, 10:29

General

  • Target

    2024-01-28_9352f447021f88df964790aadd6c5258_cryptolocker.exe

  • Size

    32KB

  • MD5

    9352f447021f88df964790aadd6c5258

  • SHA1

    d43b096475846b57942bf08ba22bdac6e99aa3aa

  • SHA256

    00152a4cdc411c69c0caa694917b5aedeb35e68b45b6e27fa37cb8149c1ed984

  • SHA512

    772eda22c4feee00626ed98cce28dad16c9fe23d855cd9a101ae8f594cb4ab26960a483589a983a9536d62a212b9b92c6132591e9460d18f9492c2d4ac6093a1

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+41:fT+hsMQMOtEvwDpjoIH1

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-28_9352f447021f88df964790aadd6c5258_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_9352f447021f88df964790aadd6c5258_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:988
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    32KB

    MD5

    2c1830d2d9f00a91c9331d4449725961

    SHA1

    43d1bd9087b8cee601737c488d31d83bbb55b76f

    SHA256

    565833a4e59cf7d2555083b4191739ffc79558721cccb692063b1c4af39fe4a7

    SHA512

    109e9a59ffb820375c07dd4badbc24133d0bd2f2f5c3544416e89f6d13d18db46d36ef44440a3e97c3fc4dba9ee95923da59c22591c000bbd059fde132642b57

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/988-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/988-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/988-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1268-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/1268-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB