Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-05-2024 13:31

General

  • Target

    2024-05-09_c804699d91ad74b9fef790e24164919e_cryptolocker.exe

  • Size

    41KB

  • MD5

    c804699d91ad74b9fef790e24164919e

  • SHA1

    e786f6607dbdec33b48b956d362058add95058d9

  • SHA256

    837ac577e892a960366f779cccb744e0cbaa4b4c451f0fbcfb4a01b4ab139de5

  • SHA512

    2b6a3b5a2d472d46b1d2efdb78f07fe24a807d8d59f9e2bab7837b6a362725ae471a63ece21376befcc8e8a380feface2beac6de378628e51baa07180bb9ed75

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQLJJzMRaka:ZzFbxmLPWQMOtEvwDpjLeU3YR1a

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-05-09_c804699d91ad74b9fef790e24164919e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_c804699d91ad74b9fef790e24164919e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4560
    • 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:2580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    af01b23f584d80cbc1cb92ff3bfc6217

    SHA1

    808c893fae72a70acfda17ddf45c876ce0e2c96a

    SHA256

    e7a7734566c1d1fd92565e2c92ef180ce638c0116bdd60e80ec8aa53025c46cb

    SHA512

    b239b1ce94fc731afda95bcfdf04f7bf96640c8892e997380a791c7e7e8a1935f3bb8af11ee33eb56df5c38796467bb88ee67bd6a081c3602f86542e0babe24d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2580-17-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/4560-0-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/4560-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4560-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4560-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4560-18-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB