Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 05:59

General

  • Target

    2024-05-22_995219425fe418029342971ffcef8445_cryptolocker.exe

  • Size

    41KB

  • MD5

    995219425fe418029342971ffcef8445

  • SHA1

    309085ba4b2db58e3764dd5cc8deff674fa021aa

  • SHA256

    b6741fd0892886081495371ab187b5e40c53cd535b1f793ca57a8f8038746f4b

  • SHA512

    304792f2e0f7fe6d336611b4796ec36284bb2a1e16476b65e93d87f559180ba8e6bd5a068c6f69ae353ba7bbe9425ccb12a8972cf2d9674982e2fae7dbce8bcb

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDkh:ZzFbxmLPWQMOtEvwDpjLeJAsKcW

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_995219425fe418029342971ffcef8445_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_995219425fe418029342971ffcef8445_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4856
    • 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:2876

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    971718663130d0d18e652a1f08e43911

    SHA1

    8123b1344a87195b0af217afc7e467b8c01ed115

    SHA256

    17297aa7b3cddfc2044c56b17c9b36eddc66ea7022dc3ac3a0a7629397574858

    SHA512

    26365f2c732ca5143ccb6636a274f6d5ce269cab084310b2e51442fc8ae5f86625902af424478410ed612f304fb4d2c63d39b7988b3f81d03455228698bb4073

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2876-19-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2876-25-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4856-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4856-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4856-2-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4856-9-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4856-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB