Analysis

  • max time kernel
    140s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 02:39

General

  • Target

    2024-05-22_e5d13210eb1eb48c85c290e202e680a3_cryptolocker.exe

  • Size

    43KB

  • MD5

    e5d13210eb1eb48c85c290e202e680a3

  • SHA1

    c8c42feab628a3d5e6ee1743b1e909d41c205d9b

  • SHA256

    2a0e65afd1a53e40dcfccc8e8001f61cd11c15e2185ba18c918b5da61af8c098

  • SHA512

    c0cad78bf2aec85a5960c6194fa081a7af1630eb6358df8dac4fa50caed4b5eeb6cb2e7307617437a496b81ab8f0bf54053a5a6b6f5a3449b645ca222ba34a4d

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66Tc2:vj+jsMQMOtEvwDpj5HW5sc2

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-22_e5d13210eb1eb48c85c290e202e680a3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_e5d13210eb1eb48c85c290e202e680a3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3344
    • 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:2720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    063a10be583a72d869e8d81c3078bae8

    SHA1

    29ef937fdeebd93390faaab19ea78c27c2a2273f

    SHA256

    6c08ad455cf5061588d72a565f168a7563e986271249379c2474b5d8308515b2

    SHA512

    cb01a3dfd45861bbc5a4b9c0c30721b5b0224c746aa43575ce7ef57cc790fad643a0df54539df85de7bca3588c6b9c9dcc48aec185faf4bb24d7b06662dc58c2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2720-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2720-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3344-0-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/3344-1-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3344-8-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB