Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 23:53

General

  • Target

    44cc4433a4553bc968c9ecb1036872fbf1d0fd45068d03ab3fe7ab27d9168b4b.exe

  • Size

    260KB

  • MD5

    1ee4e2811c7aadbd5f96f7b348888f10

  • SHA1

    648b238db02a82b582ace6336bcacba67aeda9f9

  • SHA256

    44cc4433a4553bc968c9ecb1036872fbf1d0fd45068d03ab3fe7ab27d9168b4b

  • SHA512

    b0826d3da562e61068401f5ddfa0177a2070c0a452b2f0b68f140bd56c9ea9d95bba8e5257a6fdba53e20e125daca76b1f7d9a10b565cd80e64b7c16b6b47a9a

  • SSDEEP

    3072:8gfAlNfRiIwvh25n/kZoSUjMqXnpWAkpAmTSrMaIOYt/jo7LAtPhjjtZnfHFEoWM:8dJgTSrMaIl/jcLijfHFEHWzXvjT85R

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 49 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\44cc4433a4553bc968c9ecb1036872fbf1d0fd45068d03ab3fe7ab27d9168b4b.exe
    "C:\Users\Admin\AppData\Local\Temp\44cc4433a4553bc968c9ecb1036872fbf1d0fd45068d03ab3fe7ab27d9168b4b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4844
    • C:\Users\Admin\xyyaaj.exe
      "C:\Users\Admin\xyyaaj.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:732

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\xyyaaj.exe

    Filesize

    260KB

    MD5

    dc1b1b997a0c881d848fcc64f16faafb

    SHA1

    73c636c86c98c6d2e833b599c62815bca8dc4580

    SHA256

    ea74cd70e2ac5235ecadced30b2cc9bdbfb5e0c351327a477d1d23b191f374f6

    SHA512

    4616defa304a51334cad41bfcdaf8e44e535acaa9dc180d6b85e36090b0301c2efb61995b3c30d92dbfc682605ccadaad5a7be90ccf46391a48041bcbeacc7a7

  • C:\Users\Admin\xyyaaj.exe

    Filesize

    260KB

    MD5

    dc1b1b997a0c881d848fcc64f16faafb

    SHA1

    73c636c86c98c6d2e833b599c62815bca8dc4580

    SHA256

    ea74cd70e2ac5235ecadced30b2cc9bdbfb5e0c351327a477d1d23b191f374f6

    SHA512

    4616defa304a51334cad41bfcdaf8e44e535acaa9dc180d6b85e36090b0301c2efb61995b3c30d92dbfc682605ccadaad5a7be90ccf46391a48041bcbeacc7a7

  • memory/732-134-0x0000000000000000-mapping.dmp