Analysis

  • max time kernel
    95s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 19:23

General

  • Target

    2024-06-06_09a84db49f44727f1cf6b5582a448463_cryptolocker.exe

  • Size

    69KB

  • MD5

    09a84db49f44727f1cf6b5582a448463

  • SHA1

    4349a26e8e6447fca2b5d955b625899550983670

  • SHA256

    9975e0b5e43242bc2732aa98dc9a84a14f533df82bf2303e9f5194ee3aafcacc

  • SHA512

    ca4f8ec8398dfbdb4c2f5179b68210ee166ed1a51799e2e3959a5695bbe056b66a369ad759a9619433adc9122f9cb6a7bbac26c819801b1e364fb66c0b4ed3e3

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFI0t8:6j+1NMOtEvwDpjr8ox8UDEpN/jh8

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-06_09a84db49f44727f1cf6b5582a448463_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_09a84db49f44727f1cf6b5582a448463_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1532
    • 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:3228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    d139f7b77276510430a209828d6d2e55

    SHA1

    85c2afd42ebb6dfb0c06a07df0660cfbcb151ba3

    SHA256

    04d7f68bf3be545645223c3417721d5bed82e3da778f24ed896df9abd5b8b633

    SHA512

    863da7d14793302b601745472c400e21252eb802ef7b973f65ac8c1748da87238d6b90e79303441931cad605192d777edbb4611b9aef8f5c04aea9cf18018439

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1532-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1532-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1532-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1532-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1532-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3228-26-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/3228-20-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3228-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3228-51-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB