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Analysis

  • max time kernel
    1s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/01/2024, 05:54

General

  • Target

    2024-01-09_5f92f531d14c840738a94684268f8e9a_cryptolocker.exe

  • Size

    65KB

  • MD5

    5f92f531d14c840738a94684268f8e9a

  • SHA1

    4182499cb9714096a5b996e4401a2f51860d0212

  • SHA256

    05ef4ca3336ea5721a745ab2c0c88b2f2bb4b160de21dda3481d2419204a8db3

  • SHA512

    38144eef1a06b6d8f226add12b53568e25f43c6808c8e2ca18c2ba123f0a9a37f6830bd046e53ff4459907a121393e33676e85e96fed03a0ef7882a33801dda3

  • SSDEEP

    1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKu:DW60sllyWOtEvwDpjwF85P

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-09_5f92f531d14c840738a94684268f8e9a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-09_5f92f531d14c840738a94684268f8e9a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4324
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    56ae096e63b7158d795d9709bbbe8148

    SHA1

    0c5267d4fdc08395a88be8e753837b55105e3863

    SHA256

    91485be2cb5668233c7051bc5f7c93c8753553e638710e76cf996c386edb41b3

    SHA512

    c2917fdff22c2a727984111e0c43ab44bba25fb08d713c6ed41520d7389fe5bb0aed8468ca86e7f2dcc9fdeb00033921f346b98eaa48236d533623f1145d0964

  • memory/4324-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4324-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4324-2-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4324-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4324-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4760-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4760-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB