Analysis

  • max time kernel
    146s
  • max time network
    85s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2023, 17:12

General

  • Target

    02937aee76378f87115f46a1115df1e5.exe

  • Size

    260KB

  • MD5

    02937aee76378f87115f46a1115df1e5

  • SHA1

    c0b29151b5524d412ff4df1d2f8dd3986de45539

  • SHA256

    04e270571abf137c33ca3e8ca45b75a296ac3138cf5a6bf62fdac3f9e16e5847

  • SHA512

    b2fb4236c12a34c373550258912de7713a4495ad386eecb922b25d40b784ea663723ad9aa9c220fc224285931d5c2300244ed3a99f88c5b0e3b40013c89d3c44

  • SSDEEP

    3072:8gfAlN+wvh25n/kZoSUjMqXnpWAkpAmTSrMaIOYt/jo7LAtPhjjtZnfHFEoWBfGL:8dQgTSrMaIl/jcLijfHFEHWzXvjT85R

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 50 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\02937aee76378f87115f46a1115df1e5.exe
    "C:\Users\Admin\AppData\Local\Temp\02937aee76378f87115f46a1115df1e5.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3620
    • C:\Users\Admin\crdeaf.exe
      "C:\Users\Admin\crdeaf.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:4616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\crdeaf.exe

    Filesize

    260KB

    MD5

    7539455da27301619bf08f013cb4d944

    SHA1

    6e54c33c5b70564477bf52abd0f6f01f66a8a15c

    SHA256

    bf756030227f7cca4a9b0b0d0c9b18fdd10809ea18c0cfe4dba7fedb3862382d

    SHA512

    116da51ff3cbcab3e38247f353b6608d393458a0e154aac70fc89b404a342306d88e9b89d2c0a9bf6096c42fa582c5cfac261fa9f2c0325a8667ba1083ed94a6