Overview

overview

10

Static

static

10

Arhvn.exe

windows7-x64

10

Arhvn.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-09-2023 09:41

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General

  • Target

    Arhvn.exe

  • Size

    90KB

  • MD5

    65bac4256dde1c7d987afa8ef8e9a1c4

  • SHA1

    222922b2ba2f43cfc2049ca578b256d486fcf956

  • SHA256

    f51fe3720ba2e618cc10e6045a948880f6ca2c802466684332bf744e526059e7

  • SHA512

    7d08d19af3eff1a3899a4d039ba273ead5267e075af32b9755cd61ad5349bf6e6c87cbf9cca92893da7c4acecb42d9867f447f2139384e5de86b235c77125d27

  • SSDEEP

    1536:ubRiQMn57SK3bUzZdQ1iIMvnZlbLxjV3AGq5gWlocT1wzySsd9NJ33L:ubRA57SKsstcnZTJQDgWPaySsdH57

Score
10/10
arrowratarrowratpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

ArrowRAT

C2

arhvn.duckdns.org:5555

Mutex

fKHUsQQAb.exe

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 2 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 Internet Explorer settings 1 TTPs 10 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Arhvn.exe
    "C:\Users\Admin\AppData\Local\Temp\Arhvn.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5088
    • 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:1292
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" ArrowRAT arhvn.duckdns.org 5555 fKHUsQQAb.exe
      2⤵
        PID:2228
    • 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:3340
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3880
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3344
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2064
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4624
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2332

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\46IOJ2Y1\microsoft.windows[1].xml
      Filesize

      96B

      MD5

      132893809ee21f6cc9bd8398d163fde8

      SHA1

      664b895e0f6ae4f8ed96f36dee355d4e554b29eb

      SHA256

      af9f28768de7e7f0f21d52b63003adb8fa1b563ab8e4a38bf361a7f51aa8d8d2

      SHA512

      a540b8cddd2684bf6d11480bc23200200414984b4520842db541e07021520fb6cf356492b7e2517cdd53718f4a8b6002d5268db4c085b5d1ab6ed3cc1973caa8

      Download Submit

    • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\46IOJ2Y1\microsoft.windows[1].xml
      Filesize

      96B

      MD5

      132893809ee21f6cc9bd8398d163fde8

      SHA1

      664b895e0f6ae4f8ed96f36dee355d4e554b29eb

      SHA256

      af9f28768de7e7f0f21d52b63003adb8fa1b563ab8e4a38bf361a7f51aa8d8d2

      SHA512

      a540b8cddd2684bf6d11480bc23200200414984b4520842db541e07021520fb6cf356492b7e2517cdd53718f4a8b6002d5268db4c085b5d1ab6ed3cc1973caa8

      Download Submit

    • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\46IOJ2Y1\microsoft.windows[1].xml
      Filesize

      96B

      MD5

      132893809ee21f6cc9bd8398d163fde8

      SHA1

      664b895e0f6ae4f8ed96f36dee355d4e554b29eb

      SHA256

      af9f28768de7e7f0f21d52b63003adb8fa1b563ab8e4a38bf361a7f51aa8d8d2

      SHA512

      a540b8cddd2684bf6d11480bc23200200414984b4520842db541e07021520fb6cf356492b7e2517cdd53718f4a8b6002d5268db4c085b5d1ab6ed3cc1973caa8

      Download Submit

    • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\46IOJ2Y1\microsoft.windows[1].xml
      Filesize

      96B

      MD5

      132893809ee21f6cc9bd8398d163fde8

      SHA1

      664b895e0f6ae4f8ed96f36dee355d4e554b29eb

      SHA256

      af9f28768de7e7f0f21d52b63003adb8fa1b563ab8e4a38bf361a7f51aa8d8d2

      SHA512

      a540b8cddd2684bf6d11480bc23200200414984b4520842db541e07021520fb6cf356492b7e2517cdd53718f4a8b6002d5268db4c085b5d1ab6ed3cc1973caa8

      Download Submit

    • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\46IOJ2Y1\microsoft.windows[1].xml
      Filesize

      96B

      MD5

      132893809ee21f6cc9bd8398d163fde8

      SHA1

      664b895e0f6ae4f8ed96f36dee355d4e554b29eb

      SHA256

      af9f28768de7e7f0f21d52b63003adb8fa1b563ab8e4a38bf361a7f51aa8d8d2

      SHA512

      a540b8cddd2684bf6d11480bc23200200414984b4520842db541e07021520fb6cf356492b7e2517cdd53718f4a8b6002d5268db4c085b5d1ab6ed3cc1973caa8

      Download Submit

    • memory/1292-11-0x0000000002BB0000-0x0000000002BB1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/2064-63-0x0000014E858A0000-0x0000014E858C0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2064-61-0x0000014E85290000-0x0000014E852B0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2064-58-0x0000014E852D0000-0x0000014E852F0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2228-9-0x0000000005920000-0x0000000005930000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2228-8-0x00000000055A0000-0x0000000005632000-memory.dmp

      Filesize

      584KB

      Download

    • memory/2228-28-0x0000000074D00000-0x00000000754B0000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/2228-4-0x0000000000400000-0x0000000000410000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2228-7-0x0000000074D00000-0x00000000754B0000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/2228-50-0x0000000005920000-0x0000000005930000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2332-102-0x0000028836E00000-0x0000028836E20000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2332-100-0x0000028836A00000-0x0000028836A20000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2332-97-0x0000028836A40000-0x0000028836A60000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3344-36-0x0000017AE5390000-0x0000017AE53B0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3344-43-0x0000017AE57A0000-0x0000017AE57C0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3344-39-0x0000017AE5350000-0x0000017AE5370000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3880-20-0x000001E964A70000-0x000001E964A90000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3880-17-0x000001E964AB0000-0x000001E964AD0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3880-23-0x000001E965120000-0x000001E965140000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4624-79-0x00000201E2E60000-0x00000201E2E80000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4624-83-0x00000201E2E20000-0x00000201E2E40000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4624-85-0x00000209E4240000-0x00000209E4260000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5088-2-0x0000000005DD0000-0x0000000006374000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/5088-1-0x0000000074C60000-0x0000000075410000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/5088-0-0x0000000000ED0000-0x0000000000EEC000-memory.dmp

      Filesize

      112KB

      Download

    • memory/5088-3-0x00000000059D0000-0x0000000005A6C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/5088-6-0x0000000074C60000-0x0000000075410000-memory.dmp

      Filesize

      7.7MB

      Download