Analysis

  • max time kernel
    139s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 06:04

General

  • Target

    2024-03-05_acd8af9e6c2803706c9386c4f2aad252_cryptolocker.exe

  • Size

    39KB

  • MD5

    acd8af9e6c2803706c9386c4f2aad252

  • SHA1

    dcc54795b784960113079ff54db0094bcee4f17d

  • SHA256

    05aee4ccdb4e7ede5ffd59cd621a6150af7cfed3ad5bfededbea07334c3e3ef9

  • SHA512

    229811b3627e73995e0bfb75aabbf51a108d131261eb85a0a227556251cbfee2bb3008ef419c52619a17b15f0df43ac128b657f7b89c57793c844ae4d17f9314

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqhMWKaT:6j+1NMOtEvwDpjrob

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-05_acd8af9e6c2803706c9386c4f2aad252_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_acd8af9e6c2803706c9386c4f2aad252_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5116
    • 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:3084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    1e97980d5933b32952fd9d4244be7f87

    SHA1

    3f41e543ad41fdeac2d56ec0998a5530719b3562

    SHA256

    6da77093189418dbcc77a27d1755f5220d70fce86982f19795d2239caaf935b5

    SHA512

    63a2115c8e81ea267d3c6916ca289580093833082b141686aa9f0ccd1673a4e61bb6bf6c343a6ca6222c3b85db2966a76a6501cf31cefeab0cf1685d7a28605d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3084-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/5116-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/5116-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/5116-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/5116-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5116-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB