Analysis

  • max time kernel
    93s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 07:45

General

  • Target

    2024-06-03_c5b05103f199c47dfd8fa58ff609d129_cryptolocker.exe

  • Size

    39KB

  • MD5

    c5b05103f199c47dfd8fa58ff609d129

  • SHA1

    1480994d1e47308a803313a43215b3fb4df81253

  • SHA256

    ba7c74af0dad09ae4ba8e7a35f537ec3d7e6ace2d4a36127c722c10911e6d862

  • SHA512

    e099a3bca148812b98d262e3462fbeb84442105d1cf2eb1fc8ec4b9ad0231c9275f99ab86ee5ca8e62d4796652c2ad50726df6b3fe4f8d69e20b05cbf7476797

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenUDq6:ZzFbxmLPWQMOtEvwDpjLe16

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-03_c5b05103f199c47dfd8fa58ff609d129_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_c5b05103f199c47dfd8fa58ff609d129_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1116
    • 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:4060

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    961aed16554f5802ae9959e3fc2db61f

    SHA1

    5574b9f315d567a030ce6874a4f6b85ec5b95d50

    SHA256

    689552e1523914932f20d780a702a0401efd97420432420f6ba3f6d819dbcfd5

    SHA512

    f84adbe8d795b269c80afe2ff5a803eed0a5209e24b0da3e8640b5f93a66e7acc7d8bcbdd24d5934c1806696584309da5debdf1f0725f49735adfca28f089afc

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1116-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1116-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1116-2-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/1116-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1116-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4060-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4060-20-0x00000000006F0000-0x00000000006F6000-memory.dmp

    Filesize

    24KB

  • memory/4060-26-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB