Analysis

  • max time kernel
    139s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/05/2024, 02:32

General

  • Target

    2024-05-02_9baa7a765d2ea52cb926eb279d0229df_cryptolocker.exe

  • Size

    47KB

  • MD5

    9baa7a765d2ea52cb926eb279d0229df

  • SHA1

    84c010ff2ccc721920ed21be67b3d5378f31972e

  • SHA256

    fc73ef0fbd8a74179fbbdf229a543374c02059ddd99e4bc1b5b0fbc93cfe7663

  • SHA512

    389387fa363e2f79fa5bd6c5731697aa1d48b1efef7c79ede0a00ae1c821dd287b8e6a73698cfcb0ee64e3654150af62b9b3010ac200c35ad12070106178c0c9

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRh+E0:xj+VGMOtEvwDpjy+TRh+E0

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-05-02_9baa7a765d2ea52cb926eb279d0229df_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-02_9baa7a765d2ea52cb926eb279d0229df_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4464
    • 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:1848

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    ef601808a93ac8739234a4d072c7d768

    SHA1

    d55b44e4e00d604f1d59c2c326e11d561c6ef218

    SHA256

    716358be2188358b02dc0f82603441a7b93acbcb73b9433d70f2217d2145ff64

    SHA512

    e3737d48da3feb5727a98f942f5e98559a8a4110d22c1a0c7da7bebfd3c28f2907c22d140944da4cb282d24237843672622b941ba31223de3561c08071f39f0a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1848-21-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/1848-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1848-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4464-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4464-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4464-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/4464-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4464-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB