Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/03/2024, 09:32

General

  • Target

    knr.exe

  • Size

    2.3MB

  • MD5

    cc28e40b46237ab6d5282199ef78c464

  • SHA1

    0d5c820002cf93384016bd4a2628dcc5101211f4

  • SHA256

    749e161661290e8a2d190b1a66469744127bc25bf46e5d0c6f2e835f4b92db18

  • SHA512

    44b689ec760068e505ff4d7d708cb9653bbd1c9cdaac387f76af2bdef99349edd5ac9443125d29938bc77a5a889442c8e99091c5116599ec6f68495f962b5044

  • SSDEEP

    49152:HxZKeQAhGOzL0AreYOvAw0nH63BJZoo7IdjU/rVIiP80XfM6Y7:CeQAhGOzJrGvAw0nHoBJZooP/rVIiPvE

Malware Config

Extracted

Family

netwire

C2

dunlop.hopto.org:2032

Attributes
  • activex_autorun

    false

  • copy_executable

    true

  • delete_original

    false

  • host_id

    tng

  • install_path

    %AppData%\tng\tng.exe

  • keylogger_dir

    %AppData%\tgn\

  • lock_executable

    true

  • mutex

    bmnxcvbT

  • offline_keylogger

    true

  • password

    Password

  • registry_autorun

    true

  • startup_name

    tng

  • use_mutex

    true

Signatures

  • NetWire RAT payload 5 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\knr.exe
    "C:\Users\Admin\AppData\Local\Temp\knr.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:924
    • C:\Users\Admin\AppData\Roaming\tng\tng.exe
      "C:\Users\Admin\AppData\Roaming\tng\tng.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:1172
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3972 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2320

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\tng\tng.exe

      Filesize

      1.4MB

      MD5

      173274f28862af61e25b2bba50d41e26

      SHA1

      f513cfe2cc9203dbc943a87fcba94be91923b5ae

      SHA256

      d883d4c953e8d82c8828c06fd4e190f8d0df63c1c1fa59658e1789700d81a7e6

      SHA512

      46f46678dfce70ab3150d1ff846bb75a788119010a2c19525e69c57b010ddb5822c1a031e36c84b40369315cfb5a4c639cab4ad95f4866a7270a36905301b411

    • C:\Users\Admin\AppData\Roaming\tng\tng.exe

      Filesize

      1.3MB

      MD5

      a3a58a16613cf111069845840cf242ae

      SHA1

      8ef4dc10608e14c0ec61e245ba947a3ff598ea5a

      SHA256

      de4730c6728c46098f721a1a5f061c336217e77a73b47c6c3da11fa516334d71

      SHA512

      109e595ba0604e0a7224fa102b6b9741c63eaa1ee1af524ca56e4c207f914c7f61ad3e6199afddc82430c7be6b34210f29bf5c07a018817cbb0b3113edcf1a9a

    • memory/924-0-0x0000000000400000-0x000000000065A000-memory.dmp

      Filesize

      2.4MB

    • memory/924-1-0x00000000025D0000-0x00000000025F2000-memory.dmp

      Filesize

      136KB

    • memory/924-2-0x0000000002600000-0x000000000262C000-memory.dmp

      Filesize

      176KB

    • memory/924-8-0x0000000000400000-0x000000000065A000-memory.dmp

      Filesize

      2.4MB

    • memory/924-9-0x0000000002600000-0x000000000262C000-memory.dmp

      Filesize

      176KB

    • memory/1172-7-0x0000000000400000-0x000000000065A000-memory.dmp

      Filesize

      2.4MB

    • memory/1172-10-0x00000000023E0000-0x000000000240C000-memory.dmp

      Filesize

      176KB

    • memory/1172-11-0x00000000023E0000-0x000000000240C000-memory.dmp

      Filesize

      176KB