Analysis

  • max time kernel
    148s
  • 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
    13/05/2024, 16:28

General

  • Target

    2024-05-13_5759e8b897c50e7f32a6cacc313e5ae9_cryptolocker.exe

  • Size

    67KB

  • MD5

    5759e8b897c50e7f32a6cacc313e5ae9

  • SHA1

    b8111c2355a32376cd30c1bda3511a4d4ed1f42a

  • SHA256

    4399d76dbb9ae66e19a8c97f6ccf324f66b41356d83c8d3e825fddd1eb9b39ba

  • SHA512

    d6b8dd69943b25909eaaef2b1caed61fd57cf6c4de4720f9245da7f6ae4dc25112bfcbe11a404d01ed44f31aaec050bf82c0a45e079597b2225577538444ef0b

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIh:6j+1NMOtEvwDpjr8ox8UDEpN/jE

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-13_5759e8b897c50e7f32a6cacc313e5ae9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-13_5759e8b897c50e7f32a6cacc313e5ae9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1052
    • 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:4112

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    c2f7e1fec7c49c411fc2c3fdf1593bd3

    SHA1

    c815501dff7d17de567cf9e642a86cd90e6aa939

    SHA256

    60947d6b14afbe82240e9d6d660a19f8b49b01c07e6f693e4f2a408b27e45d70

    SHA512

    c1b45f6067f33b65b633527db99768fa3d775c88956ff3ba15b410503863f82d0acb4251a7035b4e1123f51c92708bf7eccca1bfccbf7844cd2a820d6ce2f710

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1052-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1052-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1052-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/1052-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1052-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4112-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/4112-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4112-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB