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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    31/10/2023, 23:51

General

  • Target

    Win32.Wannacry.dll

  • Size

    5.0MB

  • MD5

    30fe2f9a048d7a734c8d9233f64810ba

  • SHA1

    2027a053de21bd5c783c3f823ed1d36966780ed4

  • SHA256

    55504677f82981962d85495231695d3a92aa0b31ec35a957bd9cbbef618658e3

  • SHA512

    b657b02506f768db3255293b0c86452b4dfdd30804629c323aaa9510a3b637b0906e5963179ef7d4aaedc14646f2be2b4292e6584a6c55c6ddb596cff7f20e2a

  • SSDEEP

    49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:+DqPoBhz1aRxcSUDk36SAEdhvxWa9

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3255) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 3 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Win32.Wannacry.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1896
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\Win32.Wannacry.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:1128
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:1988
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2392
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    PID:2808
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6c59758,0x7fef6c59768,0x7fef6c59778
      2⤵
        PID:1548
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1172 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:2
        2⤵
          PID:2448
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1500 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:8
          2⤵
            PID:588
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1592 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:8
            2⤵
              PID:2116
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2260 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:1
              2⤵
                PID:1940
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2316 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:1
                2⤵
                  PID:1724
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1312 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:2
                  2⤵
                    PID:2948
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1152 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:1
                    2⤵
                      PID:528
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3428 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:8
                      2⤵
                        PID:1660
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3452 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:8
                        2⤵
                          PID:2712
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3476 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:8
                          2⤵
                            PID:1056
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3640 --field-trial-handle=1192,i,5979364880979894654,10728485090787224626,131072 /prefetch:8
                            2⤵
                              PID:1040
                          • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                            "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                            1⤵
                              PID:2032

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\4cd9d69a-7321-4a87-afdd-6fe6e1b386ee.tmp

                              Filesize

                              218KB

                              MD5

                              fd61de08c48c4431ae4f74e460f2c89e

                              SHA1

                              b257b5d76e5f1caf0f955997ebc0dfa1595bf343

                              SHA256

                              318a27cb9f3adb6ed2c696aacc950a064dd0f17f4316ffaac8525d5681604169

                              SHA512

                              9e4e1f8a9b37ff344cb10985e96d1de5f13d5ac68185c982ca2a1a1083be59711c1fe688d3ba4c255ed264cc3bc135f46c10c044287fbf61697864b01471bd7a

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                              Filesize

                              16B

                              MD5

                              18e723571b00fb1694a3bad6c78e4054

                              SHA1

                              afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                              SHA256

                              8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                              SHA512

                              43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1

                              Filesize

                              264KB

                              MD5

                              f50f89a0a91564d0b8a211f8921aa7de

                              SHA1

                              112403a17dd69d5b9018b8cede023cb3b54eab7d

                              SHA256

                              b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                              SHA512

                              bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                            • C:\WINDOWS\mssecsvc.exe

                              Filesize

                              3.6MB

                              MD5

                              90a1e06d78737b9a87e8ea42f76e2544

                              SHA1

                              785ddf8bd3add2da415cbc7c39aab7eb21407d20

                              SHA256

                              e1bee0f7a7cd0ac8659033d9e67bfc83ae03843ed30dff8ca590f916604a6de7

                              SHA512

                              40ee623eb975b3890d3e8260e76963d078a7734c040d4151fa0cf11fd6e2421f5ea609f67922a51c6df7a09f077087361586d5f40208bc97ee70531e2a3df5be

                            • C:\Windows\mssecsvc.exe

                              Filesize

                              3.6MB

                              MD5

                              90a1e06d78737b9a87e8ea42f76e2544

                              SHA1

                              785ddf8bd3add2da415cbc7c39aab7eb21407d20

                              SHA256

                              e1bee0f7a7cd0ac8659033d9e67bfc83ae03843ed30dff8ca590f916604a6de7

                              SHA512

                              40ee623eb975b3890d3e8260e76963d078a7734c040d4151fa0cf11fd6e2421f5ea609f67922a51c6df7a09f077087361586d5f40208bc97ee70531e2a3df5be

                            • C:\Windows\mssecsvc.exe

                              Filesize

                              3.6MB

                              MD5

                              90a1e06d78737b9a87e8ea42f76e2544

                              SHA1

                              785ddf8bd3add2da415cbc7c39aab7eb21407d20

                              SHA256

                              e1bee0f7a7cd0ac8659033d9e67bfc83ae03843ed30dff8ca590f916604a6de7

                              SHA512

                              40ee623eb975b3890d3e8260e76963d078a7734c040d4151fa0cf11fd6e2421f5ea609f67922a51c6df7a09f077087361586d5f40208bc97ee70531e2a3df5be

                            • C:\Windows\mssecsvc.exe

                              Filesize

                              3.6MB

                              MD5

                              90a1e06d78737b9a87e8ea42f76e2544

                              SHA1

                              785ddf8bd3add2da415cbc7c39aab7eb21407d20

                              SHA256

                              e1bee0f7a7cd0ac8659033d9e67bfc83ae03843ed30dff8ca590f916604a6de7

                              SHA512

                              40ee623eb975b3890d3e8260e76963d078a7734c040d4151fa0cf11fd6e2421f5ea609f67922a51c6df7a09f077087361586d5f40208bc97ee70531e2a3df5be

                            • C:\Windows\tasksche.exe

                              Filesize

                              3.4MB

                              MD5

                              0df2ae526d7350c2e3d1383c07a6be04

                              SHA1

                              06c4d41c60736ea1e0bb1b095536499e05068442

                              SHA256

                              10111f53da4181d548ea77cc91f02a15b9ede3f111f074230761f2afee7cd637

                              SHA512

                              9ca1ca36dcefdb1eba3152bc2d14c9dceb3360960338d13db5f8a02327aef80cb0ab238c2c1f3d2dbd7fd75124d4199b5cd63f173a09a0dea212ebb265f8453d