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Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/10/2022, 16:32

General

  • Target

    06ba3104a62d7be93356aa9f37347af4e6080e615c36347b6086eaa9a3e4fc2f.exe

  • Size

    260KB

  • MD5

    851bfcaa840d8924eab1f269c08e2db0

  • SHA1

    d5bee3ddc7a1f98d7f6bf70cd6c559cec1b4690a

  • SHA256

    06ba3104a62d7be93356aa9f37347af4e6080e615c36347b6086eaa9a3e4fc2f

  • SHA512

    3d58dcda88f0b3ffdf51defda5b53bb1639341978511159c63ee44b5160a477c60420a7da569a5913f63f9b8dc31baa9852055c8d70f7201dadc3a67c0911832

  • SSDEEP

    1536:qk7YsdcFjfUXhXAXzXkkcUcks98kMEi76WpPUjHmwDrTO:37YS0ykcUcks98kMEfWJuHm0X

Score
10/10

Malware Config

Signatures

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

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\06ba3104a62d7be93356aa9f37347af4e6080e615c36347b6086eaa9a3e4fc2f.exe
    "C:\Users\Admin\AppData\Local\Temp\06ba3104a62d7be93356aa9f37347af4e6080e615c36347b6086eaa9a3e4fc2f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3536
    • C:\Users\Admin\youifeg.exe
      "C:\Users\Admin\youifeg.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
      • Suspicious use of WriteProcessMemory
      PID:4268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\youifeg.exe

    Filesize

    260KB

    MD5

    5377d977a0b22adf9077c1b2e829354d

    SHA1

    79f1a4b64ac3e5c4195511e0864d6349823746a9

    SHA256

    453b13ec8af0442738ca8582a6ca11b89825a2d6dc56da0a84ad8bd3a6ddcc06

    SHA512

    99eab32b82cf3a159be3b577d35575650aa3b2e30b9d448fc47a3b94e68b6ecf223ded919192e72fe697ee68bc6090dd09a08af2911395bc0df9a7b75e558456

  • C:\Users\Admin\youifeg.exe

    Filesize

    260KB

    MD5

    5377d977a0b22adf9077c1b2e829354d

    SHA1

    79f1a4b64ac3e5c4195511e0864d6349823746a9

    SHA256

    453b13ec8af0442738ca8582a6ca11b89825a2d6dc56da0a84ad8bd3a6ddcc06

    SHA512

    99eab32b82cf3a159be3b577d35575650aa3b2e30b9d448fc47a3b94e68b6ecf223ded919192e72fe697ee68bc6090dd09a08af2911395bc0df9a7b75e558456

  • memory/3536-132-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/3536-141-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/4268-140-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/4268-142-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB