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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 01:30

General

  • Target

    2024-04-09_38c972dc11529a49f494e5fe570d0a0e_cryptolocker.exe

  • Size

    64KB

  • MD5

    38c972dc11529a49f494e5fe570d0a0e

  • SHA1

    3507529c679f5f8e82a08838f3915e36ef58ccdd

  • SHA256

    485bc00f09d1b171d1a339b1a8b6dd2d64c00b0adf168df8ccdb94af42e3ee12

  • SHA512

    90e2f882f66cf80e7d88096b7a15aa39cc6e45819b2a6994ea21829f1886cc6420da4fb97b16cd9f74dd25c201b02173d7e36decdc7a1d197b32f37b1f9011d6

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEO10KmJP:6j+1NMOtEvwDpjr8ox8UDEy0KmJP

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-09_38c972dc11529a49f494e5fe570d0a0e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-09_38c972dc11529a49f494e5fe570d0a0e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3544
    • 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:4360

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    6cfd16f2d7f1744a2d63c2ee212ea094

    SHA1

    e7e9494be43f893149008fb72b6d581b169ccc8e

    SHA256

    695bb1c8d7f41a7c215036b32523188961733424b3e25da420ea8018d792c109

    SHA512

    2a5d97e89a4395cb22e149dac32b001c91a9bdc4bd43a412323f834a366ba477b8088fe69585199f0f2c1b77ce2afd3d52180d777d5209be19c99465046217e0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3544-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3544-1-0x0000000000770000-0x0000000000776000-memory.dmp

    Filesize

    24KB

  • memory/3544-2-0x0000000000770000-0x0000000000776000-memory.dmp

    Filesize

    24KB

  • memory/3544-3-0x0000000000790000-0x0000000000796000-memory.dmp

    Filesize

    24KB

  • memory/3544-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4360-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4360-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4360-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4360-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB