Analysis

  • max time kernel
    136s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 18:25

General

  • Target

    2024-06-01_467841c4c49198764e15db0cc7b2063c_cryptolocker.exe

  • Size

    83KB

  • MD5

    467841c4c49198764e15db0cc7b2063c

  • SHA1

    baa72e523ec8a96dd11a687909754f937827ad23

  • SHA256

    eed70416709ccb6fdce1fd48953abe01d06304250eed26440f40fd9ae73ee859

  • SHA512

    ef11cad369ab55b4bc2b34e14efe8b3a03e1f94f913dfb088aa4b6343f30209161744f6c6fe04c70fc0133bb692adae60a40b1c04bffe0571e657df973518970

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrh8P:TCjsIOtEvwDpj5HE/OUHnSMo

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-01_467841c4c49198764e15db0cc7b2063c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_467841c4c49198764e15db0cc7b2063c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:692
    • 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:2732

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    ca32bd5203fb8d5e3a62c1cc6fb07f9c

    SHA1

    e1d80e370a73928673ba8d467fd214d90be63b07

    SHA256

    c113a5abafc8e458652cf19b885480525be1c4eb8584be016fdcf7d7d69c9186

    SHA512

    d9a38c9ca6b144cc7c02c5975d56a5ef4adb7b34c7f87fe1540cb8cce9bee595040205861ce620e09098f557243f3ce6f2e0af45fa4fc11547b172515fd8af21

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/692-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/692-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/692-2-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/692-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/692-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2732-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2732-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/2732-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/2732-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB