General

  • Target

    C28B393FCCF6D23F9B175B44C4288893.exe

  • Size

    669KB

  • Sample

    240908-nfzzsatakn

  • MD5

    c28b393fccf6d23f9b175b44c4288893

  • SHA1

    7d081db02f6654c785fca5b8187e13fdde5878c6

  • SHA256

    08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a

  • SHA512

    e9167c23388fe417a1da2733272a40052ca5db5f1068e57bfcf0864e129e7e9a5aab43d10647e6bdc2b84eb66f7ab0f1677e268f5581931b8a147cf74330fc3b

  • SSDEEP

    12288:SBdlwHRn+WlYV+W2X+t4DwlFpJu0nTXoJwh7mA9St4xjXLYqEWXP+YjjPGoTI:SBkVdlYAW0MlFPnEJwB9SojIFkjPGR

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://pastebin.com/raw/V9y5Q5vv

Extracted

Family

asyncrat

Version

1.0.7

Botnet

SUEPR ENVIO SEP03

C2

nyan43.duckdns.org:1963

Mutex

YHGBVFDC

Attributes
  • delay

    15

  • install

    false

  • install_file

    qawsedrftyujgh.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

vjw0rm

C2

http://yuya0415.duckdns.org:1928

Targets

    • Target

      C28B393FCCF6D23F9B175B44C4288893.exe

    • Size

      669KB

    • MD5

      c28b393fccf6d23f9b175b44c4288893

    • SHA1

      7d081db02f6654c785fca5b8187e13fdde5878c6

    • SHA256

      08c456bc976fd183171bf7fef71d8fc37894a9e0e2c3b041b589cd864fce698a

    • SHA512

      e9167c23388fe417a1da2733272a40052ca5db5f1068e57bfcf0864e129e7e9a5aab43d10647e6bdc2b84eb66f7ab0f1677e268f5581931b8a147cf74330fc3b

    • SSDEEP

      12288:SBdlwHRn+WlYV+W2X+t4DwlFpJu0nTXoJwh7mA9St4xjXLYqEWXP+YjjPGoTI:SBkVdlYAW0MlFPnEJwB9SojIFkjPGR

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Vjw0rm

      Vjw0rm is a remote access trojan written in JavaScript.

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks