Overview

overview

10

Static

static

10

Client.exe

windows10-1703-x64

10

Client.exe

windows10-2004-x64

10

Client.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    18-06-2024 21:14

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    332bc09f4e96b4c92fba644fa6b49585

  • SHA1

    56fe70b2cfa0507fd1c6cb67b7456bba2e93bc39

  • SHA256

    876f5ce0e85c7bd4fd29f3b29333e3b6d130306a53ba4a9dff02151cfc8bda63

  • SHA512

    49c0a97e8f2b4a11f0261722c1c8495f9d8d438ad63a6f0f4bef0661b4ff2f05a0672caf6264d7d03fe91752def7d346b7d0ad752a0f9f8296859a543c7d10fa

  • SSDEEP

    3072:MbzgH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPUJO8Y:Mbzge0ODhTEPgnjuIJzo+PPcfPUk8

Score
10/10
arrowratclientpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

runderscore00-37568.portmap.host:37568

Mutex

qxzqapnkK

Signatures

  • ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

    ratarrowrat
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3952
      • C:\Windows\system32\ctfmon.exe
        ctfmon.exe
        3⤵
          PID:4904
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
        2⤵
          PID:3040
        • C:\Windows\System32\ComputerDefaults.exe
          "C:\Windows\System32\ComputerDefaults.exe"
          2⤵
          • Suspicious use of FindShellTrayWindow
          PID:4220
      • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
        "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
        1⤵
        • Drops file in Windows directory
        • Enumerates system info in registry
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:1636

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • memory/516-15-0x00007FFFE8120000-0x00007FFFE8B0C000-memory.dmp

        Filesize

        9.9MB

        Download

      • memory/516-1-0x000001F1E5DA0000-0x000001F1E5DCE000-memory.dmp

        Filesize

        184KB

        Download

      • memory/516-86-0x00007FFFE8120000-0x00007FFFE8B0C000-memory.dmp

        Filesize

        9.9MB

        Download

      • memory/516-0-0x00007FFFE8123000-0x00007FFFE8124000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1636-44-0x000001E20B850000-0x000001E20B870000-memory.dmp

        Filesize

        128KB

        Download

      • memory/1636-23-0x000001E20B6D0000-0x000001E20B6F0000-memory.dmp

        Filesize

        128KB

        Download

      • memory/1636-19-0x000001E20B100000-0x000001E20B200000-memory.dmp

        Filesize

        1024KB

        Download

      • memory/1636-18-0x000001E20B100000-0x000001E20B200000-memory.dmp

        Filesize

        1024KB

        Download

      • memory/3040-9-0x000000000A0F0000-0x000000000A156000-memory.dmp

        Filesize

        408KB

        Download

      • memory/3040-12-0x000000000A3B0000-0x000000000A400000-memory.dmp

        Filesize

        320KB

        Download

      • memory/3040-8-0x0000000009AF0000-0x0000000009FEE000-memory.dmp

        Filesize

        5.0MB

        Download

      • memory/3040-7-0x0000000009440000-0x00000000094DC000-memory.dmp

        Filesize

        624KB

        Download

      • memory/3040-6-0x0000000009360000-0x00000000093F2000-memory.dmp

        Filesize

        584KB

        Download

      • memory/3040-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

        Download

      • memory/3952-16-0x00000000032A0000-0x00000000032A1000-memory.dmp

        Filesize

        4KB

        Download