Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-05-2024 05:47

General

  • Target

    2024-05-03_9190c8841c7c1455e6dff8e40f0824cd_cryptolocker.exe

  • Size

    85KB

  • MD5

    9190c8841c7c1455e6dff8e40f0824cd

  • SHA1

    17c497f02e83c4526ee8dd971ba355b237ebc9ae

  • SHA256

    351f8c6927cf10a05d7755336c476f5d0661277589af7119565047e4ddd34348

  • SHA512

    c5baa50bb285e00917584bbe0c9ae9ebee1277672226c4d6220cda8c04b643a339abbff1968e089fd65e067e53cd0474161ad7d61238f99c5008ee4fb33923ff

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNB1:vCjsIOtEvwDpj5H9YvQd29

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-05-03_9190c8841c7c1455e6dff8e40f0824cd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-03_9190c8841c7c1455e6dff8e40f0824cd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3140
    • 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:2664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    85KB

    MD5

    7f93822e0e030b02e4d91fb7c177bfbe

    SHA1

    5caeb94ca1e6dd3f996b2fb44912b2356b1152b6

    SHA256

    2237633cd924ce77620df32d47e0c79913b4dddca5efe53785c55b1da2a50a1c

    SHA512

    28d1a27ad423c8d4fed64fb1f81df1fc065965e3b3d517155bd47c101973433e27b3946bd6657f9e9e3a343d42b171c89c3263d4aaba478e5be47760718a221f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3140-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3140-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3140-7-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB