Overview

overview

10

Static

static

10

bDiL.exe

windows7-x64

10

bDiL.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    137s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-03-2023 23:35

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General

  • Target

    bDiL.exe

  • Size

    138KB

  • MD5

    fcc0c059b3a4b6f9f865fcde362b9acb

  • SHA1

    23edfe65a519d095ca11f3987bfe6de661953f49

  • SHA256

    17a76858f5bba3812b8f429e261ba0e84baf8197fe1f4478aa6c7adc5d8dd6ff

  • SHA512

    0ebd9972df18c0de58077dceaf0e9618e4e6c004d53775272c8db9613a8db90834e10a255213f55ff492ae489498cc9bdbecf386986cdb1d5a0d2cfe45785b43

  • SSDEEP

    3072:2bvt5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/YO:2bv7S7BqjjYHdrqkL/

Score
10/10
arrowratil61hbpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

IL61HB

C2

windowsii.duckdns.org:1338

Mutex

3W69EU

Signatures

  • ArrowRat

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

    ratarrowrat
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

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

  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 29 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bDiL.exe
    "C:\Users\Admin\AppData\Local\Temp\bDiL.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2724
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" IL61HB windowsii.duckdns.org 1338 3W69EU
      2⤵
        PID:4108
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4572
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3536

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133225365131015053.txt
      Filesize

      75KB

      MD5

      65019a5db517d9fb830d8a57406a03ea

      SHA1

      817faf2ffe8461f653519e7bd96e7ee75021c891

      SHA256

      3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

      SHA512

      bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

      Download Submit

    • memory/2724-147-0x00000000032B0000-0x00000000032B1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/3536-158-0x000001F433310000-0x000001F433330000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3536-155-0x000001F432BC0000-0x000001F432BE0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3536-153-0x000001F432F00000-0x000001F432F20000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3908-133-0x0000022447450000-0x0000022447478000-memory.dmp

      Filesize

      160KB

      Download

    • memory/4108-137-0x0000000005610000-0x00000000056AC000-memory.dmp

      Filesize

      624KB

      Download

    • memory/4108-145-0x0000000005520000-0x0000000005530000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4108-142-0x0000000006640000-0x0000000006690000-memory.dmp

      Filesize

      320KB

      Download

    • memory/4108-139-0x0000000006340000-0x00000000063A6000-memory.dmp

      Filesize

      408KB

      Download

    • memory/4108-138-0x0000000005D90000-0x0000000006334000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4108-136-0x0000000005570000-0x0000000005602000-memory.dmp

      Filesize

      584KB

      Download

    • memory/4108-134-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

      Download

    • memory/4108-301-0x0000000005520000-0x0000000005530000-memory.dmp

      Filesize

      64KB

      Download