Overview

overview

10

Static

static

10

AsyncClient.exe

windows7-x64

10

AsyncClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    62s
  • max time network
    63s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    03-07-2024 14:21

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General

  • Target

    AsyncClient.exe

  • Size

    45KB

  • MD5

    f0ef9966e138f1773394bfdfbc85adaa

  • SHA1

    0c08d8d56915f6ed2897e5678528260afc719090

  • SHA256

    095e9b7feb5658dc46f325836e680792ae25d4e1efcddc421c244c783f64011c

  • SHA512

    63095267a77cf40f3088d792bb7d04bd4c17ed297cdb2c25c63acf48119ee675deeae32d31f6cb87e9751069ba021a159e2f284475c3ccc7f9ad8402aab5afe8

  • SSDEEP

    768:LuSzyfTAYJTbWUnj+zmo2qLzKjGKG6PIyzjbFgX3i5Wv20Nln865llBDZbx:LuSzyfTAWq2eKYDy3bCXS5Whv5lrdbx

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • c2_url_file

    https://dashboard.ngrok.com/get-started/setup

  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2468
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:2668
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\ASPNETSetup_00001.log
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:3020
    • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
      "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
      1⤵
        PID:2932
      • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
        "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
        1⤵
          PID:2084
        • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
          "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
          1⤵
            PID:2012

          Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          • \??\PIPE\lsarpc
            MD5

            d41d8cd98f00b204e9800998ecf8427e

            SHA1

            da39a3ee5e6b4b0d3255bfef95601890afd80709

            SHA256

            e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

            SHA512

            cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

            Download Submit
          • memory/2468-0-0x00000000741FE000-0x00000000741FF000-memory.dmp
            Filesize

            4KB

            Download
          • memory/2468-1-0x0000000000D10000-0x0000000000D22000-memory.dmp
            Filesize

            72KB

            Download
          • memory/2468-2-0x00000000741F0000-0x00000000748DE000-memory.dmp
            Filesize

            6.9MB

            Download
          • memory/2468-3-0x00000000741FE000-0x00000000741FF000-memory.dmp
            Filesize

            4KB

            Download
          • memory/2468-4-0x00000000741F0000-0x00000000748DE000-memory.dmp
            Filesize

            6.9MB

            Download