Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 05:33

General

  • Target

    2024-05-21_f7380ed07cf4c3611eb8c12552cd32f0_cryptolocker.exe

  • Size

    44KB

  • MD5

    f7380ed07cf4c3611eb8c12552cd32f0

  • SHA1

    0de82337f3eb9666f664f2db01ac83132a5a2f86

  • SHA256

    73d323df41f8e23dfbadea9b1ca0f73a6ee06e9848142370816d1362ee4ccce6

  • SHA512

    71597f2c672393833889c29bedb90737b8d4efd524efadc8eef47c4bf252accd534b1064cc6276f9a70be2ceae4a096e63aa27c743147329cbca7b6fe664f378

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aMDE:6j+1NMOtEvwDpjrRrY

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\2024-05-21_f7380ed07cf4c3611eb8c12552cd32f0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_f7380ed07cf4c3611eb8c12552cd32f0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3132
    • 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:776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    98fe10ac4c93b5ee61611cc813a6e7e4

    SHA1

    c735a43289a1c283b4f6bbb42c6f1bb53d077899

    SHA256

    6c47bb8908977155be405e3ebb60430d00d323f4416ae06ac32e0def2053dd0e

    SHA512

    77876756a8f974e5fae4bc7b9b51b8a9fd5890272f554d3c58c0f728984cddf991d6e8ef96d80eef260b61879dba5131cc4c49b59812f48ac27092662aa79739

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/776-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/776-26-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/776-20-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/776-51-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3132-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3132-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3132-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3132-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/3132-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB