Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 11:39

General

  • Target

    2024-02-14_335fbbb91f889530ecbebeedb4108e44_cryptolocker.exe

  • Size

    39KB

  • MD5

    335fbbb91f889530ecbebeedb4108e44

  • SHA1

    b66428ec07934008690aa428da869dedfec6f673

  • SHA256

    3643c9284d469f93ef6173e38766aa3eaaa2f5019382cb66bfb40c1ace4599d6

  • SHA512

    32c6d2e6985695cfb4ef0039cf3c00f85249792d01515bbef808bb2979ef9f5e389a66371f475182948e0d56fa67ca1ee7a572f7069eea24386318ff7b00c7b2

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRpl:m5nkFNMOtEvwDpjG8hhXzl

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-02-14_335fbbb91f889530ecbebeedb4108e44_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_335fbbb91f889530ecbebeedb4108e44_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5756
    • 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:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    b76d7cd77fd6f5be299447fef4c72225

    SHA1

    e6ee07b9063eb73b0d3463fbd9b3aee9ec7ef540

    SHA256

    d112a24e060e84867c48f7a88493287d7da6ae3a4ae3a35303bf3f434eaf94eb

    SHA512

    3019d7a0aab7798e62f79919ab2e9b87ecf615d348785f4f627795467d2e3b6334872415f61f5665faecf71af2aa9687ff9495afc91b6160c80f98c540528330

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2708-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2708-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2708-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2708-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/5756-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/5756-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/5756-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/5756-3-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/5756-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB