Overview

overview

10

Static

static

10

AsyncClient.exe

windows7-x64

AsyncClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    42s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2022 11:17

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    AsyncClient.exe

  • Size

    45KB

  • MD5

    3f549b99378e1a294ac5ca6925be62a3

  • SHA1

    465517830a668415d8bbe2991e02b44ef82793eb

  • SHA256

    09a64f0c420f2ef24cdeee7449840749c15c9449ee51e5d2e032958a3bd48a35

  • SHA512

    c8919b5b08343414d1c899a97edd45d85d12512323b29c3ab95d3caffb55283b2cfb4d8738148bf1f1e9050f52f05fdf0da89e9612345ac9e28c7d21d8397fe8

  • SSDEEP

    768:LuScq5TAYGTqWU8j+zmo2qLzKjGKG6PIyzjbFgX3iCcQjKdSpmBDZbx:LuScq5TA5c2eKYDy3bCXSmrpodbx

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:139

192.168.1.2:6606

192.168.1.2:7707

192.168.1.2:8808

192.168.1.2:139
Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1976
  • C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\Desktop\FindPop.bat" "
    1⤵
      PID:1072
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\Ωî╛╢╬l)╛3╤a¿P
      1⤵
      • Modifies registry class
      PID:1160
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x0
      1⤵
        PID:1764
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x510
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:556
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x1
        1⤵
          PID:1208

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Initial Access

        Execution

        Persistence

        Privilege Escalation

        Defense Evasion

        Credential Access

        Discovery

        System Information Discovery

        1
        T1082

        Lateral Movement

        Collection

        Exfiltration

        Command and Control

        Impact

        Replay Monitor

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        Downloads

        • memory/1160-56-0x000007FEFB531000-0x000007FEFB533000-memory.dmp
          Filesize

          8KB

          Download
        • memory/1976-54-0x0000000001250000-0x0000000001262000-memory.dmp
          Filesize

          72KB

          Download
        • memory/1976-55-0x0000000074D81000-0x0000000074D83000-memory.dmp
          Filesize

          8KB

          Download