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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 02:46

General

  • Target

    2024-05-25_8412d5dd6075cdc85a5e55cfdc10ec85_cryptolocker.exe

  • Size

    69KB

  • MD5

    8412d5dd6075cdc85a5e55cfdc10ec85

  • SHA1

    8de9c1b9eb400ac00bf2f963d88fd3abc3ba69a7

  • SHA256

    712614fe261840e6de9d17cc63588b119c1a29e0b0c14c5c3b25a39c4c6be510

  • SHA512

    c300cd9cd0107d1a349344bb0c8110e49d6689fdb82b80faa7c026435c7944a33e1afe8cfe4a4bc431bd34dd579304c2c10d5b793c266f918371e4b195b81cda

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/dE:i5nkFGMOtEvwDpjNbwQEI8UZD6

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-05-25_8412d5dd6075cdc85a5e55cfdc10ec85_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_8412d5dd6075cdc85a5e55cfdc10ec85_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3960
    • 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:1644

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    4720910caab2770e994b416bf2af8eae

    SHA1

    fdf7e7e7393aa2e4b1835ab693f534df5f6b30fb

    SHA256

    33cb8b333399f11998b095f7204a107e9d4598b7ff1c1919e032e9a757f9b97c

    SHA512

    a90d680dff4e3b67c5e94a869af0f51abc8145cb8393a131f42c7631fee2bf1d4eea5bbb202c3ef2164ac1021b6a91175c3761c6ddfb16b5d0957029c44e7ee2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1644-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1644-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1644-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1644-51-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3960-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3960-1-0x0000000001F50000-0x0000000001F56000-memory.dmp

    Filesize

    24KB

  • memory/3960-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/3960-9-0x0000000001F50000-0x0000000001F56000-memory.dmp

    Filesize

    24KB

  • memory/3960-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB