Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2023, 21:34

General

  • Target

    izyb - Linkvertise Downloader_RrW4-d1.exe

  • Size

    2.6MB

  • MD5

    ebc320a21c5ed81dd2dbf13d4c71addc

  • SHA1

    ec09eeb7873520c0f4f1f2ca9a196ef6df4fa36f

  • SHA256

    b9b692fd597fd59ddc516e43ab66367263c7ebd7f85c6666d5751729711cca59

  • SHA512

    dbfefd704ffe78863e5f12ad73360f578361234a3a1914d6021a0d000ab994e4667255600f9b4052e86a0842d755f7b3ca44fd098bedb644327edf2149989482

  • SSDEEP

    49152:4qe3f6ahzD7+H98AHaCfu64HCL+WuTmuKwET:NSiAD7E9vButHCK5NKXT

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 2 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\izyb - Linkvertise Downloader_RrW4-d1.exe
    "C:\Users\Admin\AppData\Local\Temp\izyb - Linkvertise Downloader_RrW4-d1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3568
    • C:\Users\Admin\AppData\Local\Temp\is-U376U.tmp\izyb - Linkvertise Downloader_RrW4-d1.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-U376U.tmp\izyb - Linkvertise Downloader_RrW4-d1.tmp" /SL5="$8004A,1785071,899584,C:\Users\Admin\AppData\Local\Temp\izyb - Linkvertise Downloader_RrW4-d1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4884
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://justpaste.it/a6oas
        3⤵
        • Adds Run key to start application
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:1060
        • 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=0xfc,0x100,0x104,0xf8,0x108,0x7ffd3ba546f8,0x7ffd3ba54708,0x7ffd3ba54718
          4⤵
            PID:4956
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2140 /prefetch:2
            4⤵
              PID:316
            • 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=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2388 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:3400
            • 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=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2672 /prefetch:8
              4⤵
                PID:5044
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3376 /prefetch:1
                4⤵
                  PID:3756
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3384 /prefetch:1
                  4⤵
                    PID:2288
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5224 /prefetch:8
                    4⤵
                      PID:4840
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5864 /prefetch:8
                      4⤵
                        PID:384
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5940 /prefetch:1
                        4⤵
                          PID:3912
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6068 /prefetch:1
                          4⤵
                            PID:4792
                          • 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=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6272 /prefetch:8
                            4⤵
                              PID:3260
                            • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --configure-user-settings --verbose-logging --system-level --msedge --force-configure-user-settings
                              4⤵
                              • Drops file in Program Files directory
                              PID:1068
                              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x220,0x224,0x228,0x1c4,0x22c,0x7ff673d25460,0x7ff673d25470,0x7ff673d25480
                                5⤵
                                  PID:2820
                              • 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=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6272 /prefetch:8
                                4⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1964
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5112 /prefetch:8
                                4⤵
                                  PID:788
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3152 /prefetch:8
                                  4⤵
                                    PID:4984
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1752 /prefetch:8
                                    4⤵
                                      PID:4164
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1452,9142811828158228062,16117672850118461556,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1848 /prefetch:8
                                      4⤵
                                        PID:3428
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:3972

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Temp\is-I2TFJ.tmp\botva2.dll

                                    Filesize

                                    37KB

                                    MD5

                                    67965a5957a61867d661f05ae1f4773e

                                    SHA1

                                    f14c0a4f154dc685bb7c65b2d804a02a0fb2360d

                                    SHA256

                                    450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105

                                    SHA512

                                    c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

                                  • C:\Users\Admin\AppData\Local\Temp\is-I2TFJ.tmp\botva2.dll

                                    Filesize

                                    37KB

                                    MD5

                                    67965a5957a61867d661f05ae1f4773e

                                    SHA1

                                    f14c0a4f154dc685bb7c65b2d804a02a0fb2360d

                                    SHA256

                                    450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105

                                    SHA512

                                    c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

                                  • C:\Users\Admin\AppData\Local\Temp\is-I2TFJ.tmp\zbShieldUtils.dll

                                    Filesize

                                    2.0MB

                                    MD5

                                    e1f18a22199c6f6aa5d87b24e5b39ef1

                                    SHA1

                                    0dcd8f90b575f6f1d10d6789fe769fa26daafd0e

                                    SHA256

                                    62c56c8cf2ac6521ce047b73aa99b6d3952ca53f11d34b00e98d17674a2fc10d

                                    SHA512

                                    5a10a2f096adce6e7db3a40bc3ea3fd44d602966e606706ee5a780703f211de7f77656c79c296390baee1e008dc3ce327eaaf5d78bbae20108670c5bc809a190

                                  • C:\Users\Admin\AppData\Local\Temp\is-U376U.tmp\izyb - Linkvertise Downloader_RrW4-d1.tmp

                                    Filesize

                                    3.0MB

                                    MD5

                                    74fad5c6cd2d3af1fa257b5e9531993a

                                    SHA1

                                    ab701031918456195cf9a12a8b33f9417a9f6496

                                    SHA256

                                    8dc40627fa4c09f7fd6df78e3ad03d7db3767010e15418dba24e63754dcbc59b

                                    SHA512

                                    05b107537675cfa43f3cc744c3de9164069816401af9fdb7a82dcb1a021985b97f2ecc56e3ea17151a0dee97b0af175f0883b8fb4cf5c5f7d72a5479c5557edb

                                  • memory/3568-144-0x0000000000400000-0x00000000004E9000-memory.dmp

                                    Filesize

                                    932KB

                                  • memory/3568-138-0x0000000000400000-0x00000000004E9000-memory.dmp

                                    Filesize

                                    932KB

                                  • memory/3568-134-0x0000000000400000-0x00000000004E9000-memory.dmp

                                    Filesize

                                    932KB

                                  • memory/3568-132-0x0000000000400000-0x00000000004E9000-memory.dmp

                                    Filesize

                                    932KB

                                  • memory/4884-141-0x00000000067C0000-0x00000000067CF000-memory.dmp

                                    Filesize

                                    60KB