Overview

overview

10

Static

static

10

Client.exe

windows10-1703-x64

10

Analysis

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

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-08-2024 13:58

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    b41b657eb9883b9d2de872e7200d4fd2

  • SHA1

    a9b102d7b76416bc4beaa2702e3b90206c323b66

  • SHA256

    a73f67009d77906b2dfee216b4e7cb940eef13304c22e909b65cd2834e291b1a

  • SHA512

    eb290a85597c934485887d7ccf21642042ceff82b052784543a55569af404b60fc9d42dcd42da027750d439a55a928705d4f9c1e40824e8f0b91d2e92110d73f

  • SSDEEP

    3072:5bzwH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfP6OO8Y:5bzwe0ODhTEPgnjuIJzo+PPcfP6B8

Score
10/10
arrowratclientcredential_accessdiscoverypersistenceratstealer

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

and-statements.gl.at.ply.gg:43442

Mutex

KRSSneMpK

Signatures

  • ArrowRat

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

    ratarrowrat
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

    credential_accessstealer
  • 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
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • 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 29 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of FindShellTrayWindow 33 IoCs
  • Suspicious use of SendNotifyMessage 20 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4520
    • 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 use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:912
      • C:\Windows\system32\ctfmon.exe
        ctfmon.exe
        3⤵
          PID:4664
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
        2⤵
        • System Location Discovery: System Language Discovery
        PID:864
    • 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:4900

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\temp0923
      Filesize

      10B

      MD5

      2cca98a07f90560e8d7c0d246e262c05

      SHA1

      a97cda0399de92040e0334962432dc2854459a24

      SHA256

      fa304b3d49890b783dd078e3339a9e770c1faca0030bc6e9acb4db8a1e3003d4

      SHA512

      75cbbb05a93917557a1c1ec63d7fcfe98b47cdd798f4586e0e3cf59e3b135e6234e13087d072e3b23a11d2f4b438fa7d879d6cad330bf2eae871c362a2348bdd

      Download Submit

    • memory/864-12-0x000000000A7F0000-0x000000000A840000-memory.dmp

      Filesize

      320KB

      Download

    • memory/864-2-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

      Download

    • memory/864-9-0x000000000A4F0000-0x000000000A556000-memory.dmp

      Filesize

      408KB

      Download

    • memory/864-6-0x0000000007230000-0x00000000072C2000-memory.dmp

      Filesize

      584KB

      Download

    • memory/864-7-0x00000000072D0000-0x000000000736C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/864-8-0x0000000009F80000-0x000000000A47E000-memory.dmp

      Filesize

      5.0MB

      Download

    • memory/912-16-0x00000000037F0000-0x00000000037F1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4520-0-0x000002A7C5170000-0x000002A7C519E000-memory.dmp

      Filesize

      184KB

      Download

    • memory/4520-3-0x00007FFEFE880000-0x00007FFEFF26C000-memory.dmp

      Filesize

      9.9MB

      Download

    • memory/4520-1-0x00007FFEFE883000-0x00007FFEFE884000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4520-93-0x00007FFEFE880000-0x00007FFEFF26C000-memory.dmp

      Filesize

      9.9MB

      Download

    • memory/4900-17-0x000001F63B600000-0x000001F63B700000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/4900-18-0x000001F63B600000-0x000001F63B700000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/4900-22-0x000001F63BC60000-0x000001F63BC80000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4900-40-0x000001F63BDE0000-0x000001F63BE00000-memory.dmp

      Filesize

      128KB

      Download