Analysis

  • max time kernel
    148s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 07:35

General

  • Target

    2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker.exe

  • Size

    47KB

  • MD5

    e39669415f908c3c7975f2977e207ca7

  • SHA1

    0ac0bdea06b4d823bece273d8321d91ad1e3470b

  • SHA256

    21fbbb42740331a233b03f870b5f6569da8e4bd3685a780cd4360b9cfc02fe65

  • SHA512

    4c27f77e3c3cead6cb5e7b42f008ea1d8c6fe3abe078d97464812de48a866eadfad9710787989958357dacb18478849c63381a1dced84b1b088f65bc53aab8ba

  • SSDEEP

    768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpk0yR:P6Q0ElP6G+gJQMOtEvwDpjB8WMldyR

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_e39669415f908c3c7975f2977e207ca7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4140
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    c9287127c7c06d1a0e3ab26a8f62903e

    SHA1

    0e09055b04abdd2c835b0fe5f480d00542edf193

    SHA256

    ab0a153fd3570efe34b2a6a115c9ee63213752f5cc6fb6e1b4002db321f446af

    SHA512

    896064ec8f5cb77f41a5a7b3d5426cb4065da447ce1d1ca581d702da97b2cd6d41198deecad0bef5732cd016c7b542250ddc62197456e890b62f18deda1ed6b0

  • memory/736-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/736-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/736-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/736-27-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4140-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4140-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4140-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4140-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4140-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB