General

  • Target

    tmp

  • Size

    88KB

  • Sample

    220721-hx4fmseacn

  • MD5

    d54251187d34bf23efbd1aeb8863fa80

  • SHA1

    6d89ec633bf1fc506ba796846f1e108543b85756

  • SHA256

    e103c29f6e8365d4ca9f843839556faadbb907060dbd711fa3119fe12944a635

  • SHA512

    f3aa291302719ee8306cdaec43162e36c29a56a32ed3f78c081573a0a70dc22ad1ccdd8cdc74d9dfcd56f7fc41c0d149653b568bb771e65fa1a22e9c06979236

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

widda1.ddns.net:8848

widda1.ddns.net:8828

widda1.ddns.net:22

windda.ddns.net:8848

windda.ddns.net:8828

windda.ddns.net:22

runam.ddns.net:8848

runam.ddns.net:8828

runam.ddns.net:22

winam.ddns.net:8848

winam.ddns.net:8828

winam.ddns.net:22

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      tmp

    • Size

      88KB

    • MD5

      d54251187d34bf23efbd1aeb8863fa80

    • SHA1

      6d89ec633bf1fc506ba796846f1e108543b85756

    • SHA256

      e103c29f6e8365d4ca9f843839556faadbb907060dbd711fa3119fe12944a635

    • SHA512

      f3aa291302719ee8306cdaec43162e36c29a56a32ed3f78c081573a0a70dc22ad1ccdd8cdc74d9dfcd56f7fc41c0d149653b568bb771e65fa1a22e9c06979236

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Neshta payload

    • Modifies Windows Defender Real-time Protection settings

    • Modifies system executable filetype association

    • Neshta

      Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Async RAT payload

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

MITRE ATT&CK Enterprise v6

Tasks