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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 19:59

General

  • Target

    2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe

  • Size

    4.5MB

  • MD5

    fd760cb3834dd75ba4833357b3be9624

  • SHA1

    f7dc45e22a083219a1d1c32808cd8a028b0a819d

  • SHA256

    5f3ca0d00c8ebeb870549e2b321ac9bd9cc68acf8a569276b2c25fda459e8f28

  • SHA512

    e99116b8423baec72235238f0f5700e442b59f568e0ce65e188a08502c8fcaa891e72151515bdd23e18646ee88dde916277493af80811b7cf7af14edebc71259

  • SSDEEP

    98304:g/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTU:g/ZFIjBzF/ZFIjBzPEUusU

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detects executables built or packed with MPress PE compressor 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:1688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\hasfj.exe

    Filesize

    4.5MB

    MD5

    0aad79690ada6f78b4fc42b014eaf503

    SHA1

    b0c1b846691fd4f075efa292f473ff243e981845

    SHA256

    f0fa4f6dd32481689e8002eb0330c78e85b908c8511f0e04aa0da852c7ad220b

    SHA512

    ac5efc4879b7bdea62c9ce9a096e77ba4590dd1b0fafa17b7a894947b84f284a6c5ae93ceb805358eaa403eba068c7946557e45921458ce8dc91f55730ad5b9a

  • memory/1288-1-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

    Filesize

    24KB

  • memory/1288-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

    Filesize

    24KB

  • memory/1288-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

    Filesize

    24KB

  • memory/1688-15-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1688-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB