Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/02/2024, 10:09

General

  • Target

    2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe

  • Size

    50KB

  • MD5

    bbcfa420393ba88747997001a324df66

  • SHA1

    364e5054cd41970d434681b167534fd8ceaa137e

  • SHA256

    30de0c8ecfabe15d96fe1ebd6c689ebb17d768a91ebc540bb12ee6c1d442c486

  • SHA512

    c30653bdb2956356e3944751a45dab065b3dab236baa6a0727ff4b7da5ef56fcdc133adf3799aa6f61171e50c89d17203d5d1c4b6dcfb5a9911c669826ba5100

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MzF3D:i5nkFGMOtEvwDpjNbwQEqD

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_bbcfa420393ba88747997001a324df66_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4468
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:1816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    c5a03ea8e97d364e8d189907abdc392c

    SHA1

    bc191e9cafdbaea5dfb48afcbbda127811fe8372

    SHA256

    885b357195650cdb5a8a2eb183a8d7303c808d2760ae8f650fb825b416ac8602

    SHA512

    031293f475c09ed56501355a9e4571bbdeadcb82186bf573efc2d8c3825aea7549fc9c2730c130857ac585405a8a20459bf5c2849cc0c0d2e378afafec9ca3da

  • memory/1816-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1816-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1816-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1816-55-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4468-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4468-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4468-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4468-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4468-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB