Analysis

  • max time kernel
    409s
  • max time network
    312s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19-04-2024 20:19

General

  • Target

    C11Bootstrapper/Properties/IndependenciesInstallation.bat

  • Size

    489B

  • MD5

    d8da01fb6f6288b044868f85228cbb10

  • SHA1

    9d08c813ce59ab863c6ec3c68c336eed265c5e8a

  • SHA256

    74416d022dde876ff622038a6359907da239bbd26ceb7024f5d39dd52f16c9de

  • SHA512

    c92b83ba5513694e05cf908a747609dd6fd3c70944d04a9b8a62939f4372561e4feb567d158b0316853c50a0c241a1c8c075875746a1e538912ea91ff84c308e

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:4449

127.0.0.1:6555

127.0.0.1:0

127.0.0.1:4040

Mutex

muvxjrglwtxux

Attributes
  • delay

    1

  • install

    true

  • install_file

    PageEditor.exe

  • install_folder

    %Temp%

aes.plain
aes.plain

Signatures

  • AsyncRat

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

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Drops file in Drivers directory 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 4 IoCs
  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\IndependenciesInstallation.bat"
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1468
    • C:\Windows\system32\timeout.exe
      timeout /t 5
      2⤵
      • Delays execution with timeout.exe
      PID:3208
    • C:\Windows\system32\timeout.exe
      timeout /t 1
      2⤵
      • Delays execution with timeout.exe
      PID:1956
    • C:\Windows\system32\timeout.exe
      timeout /t 3
      2⤵
      • Delays execution with timeout.exe
      PID:1436
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\msgbox.vbs"
      2⤵
        PID:3348
      • C:\Windows\system32\timeout.exe
        timeout /t 4
        2⤵
        • Delays execution with timeout.exe
        PID:4020
      • C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\C11Setup.exe
        C11Setup.exe
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:876
      • C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe
        GuiLoader.exe
        2⤵
        • Drops file in Drivers directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2620
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4100
        • C:\Windows\SYSTEM32\attrib.exe
          "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe"
          3⤵
          • Views/modifies file attributes
          PID:1552
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe'
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3892
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3440
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3600
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2852
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" os get Caption
          3⤵
            PID:768
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" computersystem get totalphysicalmemory
            3⤵
              PID:2972
            • C:\Windows\System32\Wbem\wmic.exe
              "wmic.exe" csproduct get uuid
              3⤵
                PID:4436
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:992
              • C:\Windows\System32\Wbem\wmic.exe
                "wmic" path win32_VideoController get name
                3⤵
                • Detects videocard installed
                PID:2944
              • C:\Windows\SYSTEM32\cmd.exe
                "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe" && pause
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:2288
                • C:\Windows\system32\PING.EXE
                  ping localhost
                  4⤵
                  • Runs ping.exe
                  PID:3040
            • C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\PageEditor.exe
              PageEditor.exe
              2⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3576

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            2KB

            MD5

            627073ee3ca9676911bee35548eff2b8

            SHA1

            4c4b68c65e2cab9864b51167d710aa29ebdcff2e

            SHA256

            85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

            SHA512

            3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

            Filesize

            1KB

            MD5

            6954f218ba4c7d0fe9cbf31e88fe3a69

            SHA1

            f6f26b65a7892fdcd1372dedbbb1a7fdd2b1db88

            SHA256

            b33cf6e9bb2ceccfb71165bcb40fa340fde43da503d3a4443d03aeddf28832e4

            SHA512

            e7f2aec7ef1cb35c37c8fd0d3d012a66c8aaaefc92c7975fb5597760730c9909dac76961aea6b19844863e90f992b9936efd6cf519fbc971668a86f34c1d0744

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

            Filesize

            944B

            MD5

            e3840d9bcedfe7017e49ee5d05bd1c46

            SHA1

            272620fb2605bd196df471d62db4b2d280a363c6

            SHA256

            3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

            SHA512

            76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

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

            Filesize

            948B

            MD5

            4f5f260adddac5f80eb2d1c0784a2e24

            SHA1

            8719894ff1664202f9e228c55f94d62dcaf12cce

            SHA256

            7b41d9c769cb20c7ad73e7afa44f964fd7fe66be45d2b0a2ef438dc985433202

            SHA512

            aa4a23298fda2e7bd6168bcb25b4a215616bccf73705e3566b6b576bf33bb9336682ace3354643332c940c5ee02eef59682a77447ba2f94e97ae0b4722ef0ba7

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

            Filesize

            1KB

            MD5

            7332074ae2b01262736b6fbd9e100dac

            SHA1

            22f992165065107cc9417fa4117240d84414a13c

            SHA256

            baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

            SHA512

            4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfbhhfxn.bk0.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

            Filesize

            8B

            MD5

            cf759e4c5f14fe3eec41b87ed756cea8

            SHA1

            c27c796bb3c2fac929359563676f4ba1ffada1f5

            SHA256

            c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

            SHA512

            c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

          • memory/876-8-0x000000001B6B0000-0x000000001B6C0000-memory.dmp

            Filesize

            64KB

          • memory/876-89-0x00007FF8E7B20000-0x00007FF8E7D29000-memory.dmp

            Filesize

            2.0MB

          • memory/876-10-0x00007FF8E7B20000-0x00007FF8E7D29000-memory.dmp

            Filesize

            2.0MB

          • memory/876-49-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/876-73-0x000000001B6B0000-0x000000001B6C0000-memory.dmp

            Filesize

            64KB

          • memory/876-2-0x0000000000760000-0x00000000007A4000-memory.dmp

            Filesize

            272KB

          • memory/876-4-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/992-109-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/992-100-0x0000017222CC0000-0x0000017222CD0000-memory.dmp

            Filesize

            64KB

          • memory/992-99-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/2620-6-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/2620-111-0x0000023BA0050000-0x0000023BA0203000-memory.dmp

            Filesize

            1.7MB

          • memory/2620-93-0x0000023B9FDF0000-0x0000023B9FDFA000-memory.dmp

            Filesize

            40KB

          • memory/2620-0-0x0000023B85660000-0x0000023B856A4000-memory.dmp

            Filesize

            272KB

          • memory/2620-94-0x0000023B9FEB0000-0x0000023B9FEC2000-memory.dmp

            Filesize

            72KB

          • memory/2620-115-0x0000023BA0050000-0x0000023BA0203000-memory.dmp

            Filesize

            1.7MB

          • memory/2620-44-0x0000023B9FE30000-0x0000023B9FEA6000-memory.dmp

            Filesize

            472KB

          • memory/2620-45-0x0000023B9FF00000-0x0000023B9FF50000-memory.dmp

            Filesize

            320KB

          • memory/2620-46-0x0000023B9FDB0000-0x0000023B9FDCE000-memory.dmp

            Filesize

            120KB

          • memory/2620-72-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/2620-116-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/2852-85-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/2852-88-0x000001982ECC0000-0x000001982ECD0000-memory.dmp

            Filesize

            64KB

          • memory/2852-91-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/2852-86-0x000001982ECC0000-0x000001982ECD0000-memory.dmp

            Filesize

            64KB

          • memory/2852-87-0x000001982ECC0000-0x000001982ECD0000-memory.dmp

            Filesize

            64KB

          • memory/3440-39-0x0000027CEC0A0000-0x0000027CEC0B0000-memory.dmp

            Filesize

            64KB

          • memory/3440-41-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3440-37-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3576-11-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3576-9-0x000000001B7A0000-0x000000001B7B0000-memory.dmp

            Filesize

            64KB

          • memory/3576-1-0x00000000009B0000-0x00000000009C8000-memory.dmp

            Filesize

            96KB

          • memory/3576-7-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3600-59-0x0000014842030000-0x0000014842040000-memory.dmp

            Filesize

            64KB

          • memory/3600-48-0x0000014842030000-0x0000014842040000-memory.dmp

            Filesize

            64KB

          • memory/3600-47-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3600-75-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3892-24-0x00000161A1DA0000-0x00000161A1DB0000-memory.dmp

            Filesize

            64KB

          • memory/3892-23-0x00000161A1DA0000-0x00000161A1DB0000-memory.dmp

            Filesize

            64KB

          • memory/3892-22-0x00000161A1DA0000-0x00000161A1DB0000-memory.dmp

            Filesize

            64KB

          • memory/3892-21-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB

          • memory/3892-20-0x0000016189830000-0x0000016189852000-memory.dmp

            Filesize

            136KB

          • memory/3892-27-0x00007FF8C6A70000-0x00007FF8C7532000-memory.dmp

            Filesize

            10.8MB