Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    31/05/2024, 09:37

General

  • Target

    2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe

  • Size

    45KB

  • MD5

    51447b226dfe0dc0c87f956799efb3aa

  • SHA1

    9dd3af0cf7e5319c51ab1e92433d9893f0d73742

  • SHA256

    fcb02cd409a98138868a350bfb05f3ce259b7c11888a651d9360d837459f58ca

  • SHA512

    c00f177ffefafc1672939614d63c6df06324c3c8ea03ed3dea3234c418c4054196be1e874090781968d50744ab480868bf52f351dffd7458c2ac87dad603419b

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqK:bc/y2lkF0+BeqK

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2684

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\rewok.exe

    Filesize

    46KB

    MD5

    9b696e4eef9923724f061cccb6eee3bd

    SHA1

    6b219223cc5a73389ef50c6ec77959bce5402818

    SHA256

    371672d4408db3d29137a48fc048370b4f861ba3f12612e07527640b8ae2545f

    SHA512

    88f353497190ce75b20d7050d9963a4a462c3261134b3aaa7815ea74b0c94ebaf40eeca5062c49d2269524d232bb452658e7c634e14e2d1d099d33e19a93ab97

  • memory/1704-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1704-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/1704-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/2684-23-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB