Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-05-2024 02:31

General

  • Target

    2024-05-20_69d30979f755baadfdd5153ba6c92389_cryptolocker.exe

  • Size

    57KB

  • MD5

    69d30979f755baadfdd5153ba6c92389

  • SHA1

    43d0ac53e365120c8ebc60b375058e0c4e39f2ff

  • SHA256

    beadf7b78f9c1ac48dfe301475ca26fcdc704fef3401c1010d16d96cc061e409

  • SHA512

    05128217caa25c06400e8cb9d4041e1bb12c20a6a2399a71c6c07891736b0acb9266272220ec0bda8d579a2e41031d723507f7b1c051ecb80ab040578d8015ea

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7/e4M:6j+1NMOtEvwDpjr8oxExe4M

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-05-20_69d30979f755baadfdd5153ba6c92389_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-20_69d30979f755baadfdd5153ba6c92389_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2988
    • 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:3724

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    bad1460211801eaa5e64c71352c014e8

    SHA1

    194341a3169529043ef0f4a74e2490fb4d5607ab

    SHA256

    4fe6d643fafef511a7f47fda36d6425e5426d6d8897e9040e5a5cd00b6b67729

    SHA512

    43c4a5c5d9ca31c58af34192902bea0c4244966340302faa41c4a93ae5315842e5191cc1be585a5c836f81bad0a37b1b81c08be8add4344880a984871b121f54

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2988-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2988-1-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/2988-2-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/2988-9-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/2988-25-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3724-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3724-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3724-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3724-51-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB