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Analysis

  • max time kernel
    135s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/05/2024, 04:30

General

  • Target

    2024-05-15_209b99efd6a83c05fe7df85743fdb7b9_cryptolocker.exe

  • Size

    43KB

  • MD5

    209b99efd6a83c05fe7df85743fdb7b9

  • SHA1

    480dfc12c262829b002e7ca03310a6daee90531c

  • SHA256

    5b33d280053eb47e0fbed728f425667cca2a6fd16656c336a1575d51010c3311

  • SHA512

    6f387326f6b5afe1a3972f8c71678d32e57c39e65162973632b77ef70ca8e542613f5e61d61803587b90038f91a5e2be23bdadb542c19d4b7a3ab6e759df829a

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabMwj:6j+1NMOtEvwDpjrR2XabMwj

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-15_209b99efd6a83c05fe7df85743fdb7b9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-15_209b99efd6a83c05fe7df85743fdb7b9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4260
    • 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:3932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    0f9a133317046fbc1935db236dc4b512

    SHA1

    681d7b7453006675f1099d84c2d0489779027ff7

    SHA256

    2d6529dae1e12a6563a127ebf25578d4c31b4c466435dd07dd375232d62c2d46

    SHA512

    d0da21659b2eb3240d1e1a46d186ebd47891fae1b8da20770815adf2d3769cfc0b59330291fbd79e62ac7b892ef9b4446235f05ac6d65dc4e76970ba10fe3f0f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3932-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3932-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3932-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/3932-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4260-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4260-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4260-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/4260-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4260-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB