Analysis

  • max time kernel
    99s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-12-2024 16:18

General

  • Target

    41VMO_file.exe

  • Size

    3.6MB

  • MD5

    d3f515d42cf7e62738c596dc4ba9fdb9

  • SHA1

    f63216b18ab4265d9c0b3243ba491fcb74b1bac6

  • SHA256

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

  • SHA512

    81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

  • SSDEEP

    49152:TwWtZnTwCk7UHla796h+16eUMTycWaX/Ngvv1VlHIPIV/CdQvJuJ44wPcbErkcz3:TwwvYXUMmczWvnlo0KSj5L1Ln9

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

185.208.158.187:4449

Mutex

tnybaidkzovl

Attributes
  • delay

    10

  • install

    true

  • install_file

    NotepadUpdate.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • VenomRAT 1 IoCs

    Detects VenomRAT.

  • Venomrat family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe
    "C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3228
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2560
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCC68.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:644
    • C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe
      "C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe"
      2⤵
        PID:5004
      • C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe
        "C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe"
        2⤵
          PID:2668
        • C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe
          "C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe"
          2⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3824
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"' & exit
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2172
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"'
              4⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:4884
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFD7A.tmp.bat""
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4132
            • C:\Windows\SysWOW64\timeout.exe
              timeout 3
              4⤵
              • System Location Discovery: System Language Discovery
              • Delays execution with timeout.exe
              PID:544
            • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
              "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
              4⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:640
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
                5⤵
                • Command and Scripting Interpreter: PowerShell
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4932
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4939.tmp"
                5⤵
                • System Location Discovery: System Language Discovery
                • Scheduled Task/Job: Scheduled Task
                PID:3860
              • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
                "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
                5⤵
                • Executes dropped EXE
                PID:1648
              • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
                "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
                5⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                PID:4012

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\41VMO_file.exe.log

        Filesize

        1KB

        MD5

        8ec831f3e3a3f77e4a7b9cd32b48384c

        SHA1

        d83f09fd87c5bd86e045873c231c14836e76a05c

        SHA256

        7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

        SHA512

        26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

        Filesize

        2KB

        MD5

        968cb9309758126772781b83adb8a28f

        SHA1

        8da30e71accf186b2ba11da1797cf67f8f78b47c

        SHA256

        92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

        SHA512

        4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        18KB

        MD5

        826660b0c40cdd510db28d154a7f3ec4

        SHA1

        5b8dee8b8eef5f3bca7185dfd20b3f1f99d74ebc

        SHA256

        df9c8c335edf9da46614c99ebf1daa5377d702723f79caaf2b57f0105c08fca4

        SHA512

        ce98a0341b7d565d7e7ee3d19ed69bfd6add4d57560d637c869cbafe32d111a4260c1c29dd5ac40a2a5a44a29cc603a854f4312365076b3f7d31e8d4d95fe32d

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c4u5tdoo.0s5.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmpCC68.tmp

        Filesize

        1KB

        MD5

        911aa98b25822f1ba2779622a592854f

        SHA1

        a1a5dcc229abe08944761b6b0df8fa3b1681d97a

        SHA256

        6a863c4ebea1746ce4f2603260a1074162546677df13c503030e14edd84a18a8

        SHA512

        75c743cbfdb62f9eeee57d448b5d5ec78c7e2566a2e4f56f111ef51c8fca04b057006422c27c249eb09cb7390a966f1ada33a36cf81147ec59e4bd394a424f00

      • C:\Users\Admin\AppData\Local\Temp\tmpFD7A.tmp.bat

        Filesize

        157B

        MD5

        7a0f027548a79307d92f55da02c07786

        SHA1

        324c1593d095936033b25aec5d516699986d4aed

        SHA256

        4ef1aa322d233cbb37678c0fb733da380602d51ba95aed5c8f8115e7e9831f45

        SHA512

        2727a86b1a2dde5242004be993ac4738014ef929a3bfb7bcfa1f5f15f652ab57129d12380f463fc0f0883ccfb0105398729c354e43e658fba0e30cd6f20543c0

      • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

        Filesize

        8B

        MD5

        cf759e4c5f14fe3eec41b87ed756cea8

        SHA1

        c27c796bb3c2fac929359563676f4ba1ffada1f5

        SHA256

        c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

        SHA512

        c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

      • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe

        Filesize

        3.6MB

        MD5

        d3f515d42cf7e62738c596dc4ba9fdb9

        SHA1

        f63216b18ab4265d9c0b3243ba491fcb74b1bac6

        SHA256

        1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

        SHA512

        81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

      • memory/2560-41-0x00000000702F0000-0x000000007033C000-memory.dmp

        Filesize

        304KB

      • memory/2560-52-0x0000000007680000-0x0000000007723000-memory.dmp

        Filesize

        652KB

      • memory/2560-64-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/2560-15-0x0000000004EA0000-0x0000000004ED6000-memory.dmp

        Filesize

        216KB

      • memory/2560-16-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/2560-17-0x0000000005660000-0x0000000005C88000-memory.dmp

        Filesize

        6.2MB

      • memory/2560-18-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/2560-61-0x0000000007AC0000-0x0000000007AC8000-memory.dmp

        Filesize

        32KB

      • memory/2560-20-0x0000000005CD0000-0x0000000005CF2000-memory.dmp

        Filesize

        136KB

      • memory/2560-21-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/2560-60-0x0000000007AE0000-0x0000000007AFA000-memory.dmp

        Filesize

        104KB

      • memory/2560-28-0x0000000005E50000-0x0000000005EB6000-memory.dmp

        Filesize

        408KB

      • memory/2560-27-0x0000000005D70000-0x0000000005DD6000-memory.dmp

        Filesize

        408KB

      • memory/2560-33-0x0000000005FC0000-0x0000000006314000-memory.dmp

        Filesize

        3.3MB

      • memory/2560-59-0x00000000079E0000-0x00000000079F4000-memory.dmp

        Filesize

        80KB

      • memory/2560-36-0x0000000006470000-0x000000000648E000-memory.dmp

        Filesize

        120KB

      • memory/2560-37-0x0000000006520000-0x000000000656C000-memory.dmp

        Filesize

        304KB

      • memory/2560-58-0x00000000079D0000-0x00000000079DE000-memory.dmp

        Filesize

        56KB

      • memory/2560-40-0x0000000007640000-0x0000000007672000-memory.dmp

        Filesize

        200KB

      • memory/2560-57-0x00000000079A0000-0x00000000079B1000-memory.dmp

        Filesize

        68KB

      • memory/2560-51-0x0000000006A60000-0x0000000006A7E000-memory.dmp

        Filesize

        120KB

      • memory/2560-56-0x0000000007A20000-0x0000000007AB6000-memory.dmp

        Filesize

        600KB

      • memory/2560-53-0x0000000007DF0000-0x000000000846A000-memory.dmp

        Filesize

        6.5MB

      • memory/2560-54-0x00000000077A0000-0x00000000077BA000-memory.dmp

        Filesize

        104KB

      • memory/2560-55-0x0000000007810000-0x000000000781A000-memory.dmp

        Filesize

        40KB

      • memory/3228-5-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/3228-1-0x0000000000750000-0x0000000000838000-memory.dmp

        Filesize

        928KB

      • memory/3228-9-0x00000000082E0000-0x000000000833C000-memory.dmp

        Filesize

        368KB

      • memory/3228-4-0x00000000052E0000-0x00000000052EA000-memory.dmp

        Filesize

        40KB

      • memory/3228-7-0x00000000753BE000-0x00000000753BF000-memory.dmp

        Filesize

        4KB

      • memory/3228-8-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/3228-10-0x000000000AA90000-0x000000000AB2C000-memory.dmp

        Filesize

        624KB

      • memory/3228-6-0x0000000006B00000-0x0000000006B1E000-memory.dmp

        Filesize

        120KB

      • memory/3228-39-0x00000000753B0000-0x0000000075B60000-memory.dmp

        Filesize

        7.7MB

      • memory/3228-0-0x00000000753BE000-0x00000000753BF000-memory.dmp

        Filesize

        4KB

      • memory/3228-2-0x00000000058D0000-0x0000000005E74000-memory.dmp

        Filesize

        5.6MB

      • memory/3228-3-0x0000000005210000-0x00000000052A2000-memory.dmp

        Filesize

        584KB

      • memory/3824-34-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4932-91-0x0000000005E20000-0x0000000006174000-memory.dmp

        Filesize

        3.3MB

      • memory/4932-106-0x0000000007920000-0x0000000007934000-memory.dmp

        Filesize

        80KB

      • memory/4932-93-0x00000000065F0000-0x000000000663C000-memory.dmp

        Filesize

        304KB

      • memory/4932-94-0x00000000711F0000-0x000000007123C000-memory.dmp

        Filesize

        304KB

      • memory/4932-104-0x00000000074F0000-0x0000000007593000-memory.dmp

        Filesize

        652KB

      • memory/4932-105-0x00000000078F0000-0x0000000007901000-memory.dmp

        Filesize

        68KB