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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 15:28

General

  • Target

    2024-03-05_32f0c5ecf1a713812ec07644c060395e_cryptolocker.exe

  • Size

    39KB

  • MD5

    32f0c5ecf1a713812ec07644c060395e

  • SHA1

    12f84baba03a4115af5e941a798b02241f47944b

  • SHA256

    82e978480bef1f9ea8a192ee41d29d1d89f1b83f87f810d3b7706d0cb875e50e

  • SHA512

    1326a2462900b9692f8c34afeceb49a35ad378ab1c348933270a639f75686ae247f57cfb2f48494e7a6a7be843c985762706f58c7a4d7b0b28f9427a0b88f6fa

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQL8D:ZzFbxmLPWQMOtEvwDpjLeUQ

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-05_32f0c5ecf1a713812ec07644c060395e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_32f0c5ecf1a713812ec07644c060395e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:964
    • 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:2620

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    2730c451116b98193f8823bb197c2b0f

    SHA1

    acbddb11f611afb1ccf67be22f9ae4b999e60884

    SHA256

    4ac4c3a137e69ec9381a67375c86ac8b010d08c445e64eefdbb695c9c2b321ce

    SHA512

    51fd5c2ea892e6018d2e71aef78d47f70c31a64b4a8b84062bc2faed256731fec987f53bab46eef7b0cbf610969f517f87b233ba07bd4412b98f37b68dd1e212

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/964-0-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/964-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/964-2-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/2620-16-0x0000000000460000-0x00000000004A0000-memory.dmp

    Filesize

    256KB

  • memory/2620-18-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2620-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB