Resubmissions

21/02/2024, 14:33

240221-rw8hmsha2y10

21/02/2024, 14:31

240221-rvtm4agh7w10

21/02/2024, 11:52

240221-n1xedseg6t10

Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/02/2024, 14:31

General

  • Target
    cryptowall.exe
  • Size 240KB
  • Sample240221-rvtm4agh7w
  • SHA256 45317968759d3e37282ceb75149f627d648534c5b4685f6da3966d8f6fca662d
  • MD5 SHA1 SHA512 SSDEEP
Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cryptowall.exe
    "C:\Users\Admin\AppData\Local\Temp\cryptowall.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3572
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3572 -s 476
      2⤵
      • Program crash
      PID:3124
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3572 -ip 3572
    1⤵
      PID:3540
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
      1⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2300
      • 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,0x120,0x124,0xf8,0x128,0x7ffe0f5346f8,0x7ffe0f534708,0x7ffe0f534718
        2⤵
          PID:3896
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2176 /prefetch:2
          2⤵
            PID:5052
          • 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=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2372 /prefetch:3
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:2144
          • 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=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2640 /prefetch:8
            2⤵
              PID:4996
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --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=3440 /prefetch:1
              2⤵
                PID:3644
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --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=3456 /prefetch:1
                2⤵
                  PID:2636
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --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=4536 /prefetch:1
                  2⤵
                    PID:2548
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3768 /prefetch:1
                    2⤵
                      PID:4048
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3640 /prefetch:1
                      2⤵
                        PID:4536
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3868 /prefetch:1
                        2⤵
                          PID:1256
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4628 /prefetch:1
                          2⤵
                            PID:1636
                          • 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=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4820 /prefetch:8
                            2⤵
                              PID:1724
                            • 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=2148,14068403161832008428,1263124737037490356,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4820 /prefetch:8
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:4260
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:1128
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:4500

                              Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

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                                    Downloads

                                    settings.dat

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                    • Size 152B
                                    • SHA256 e83daa7b2af963dbb884d82919710164e2337f0f9f5e5c56ee4b7129d160c135
                                    • MD5 SHA1 SHA512

                                    settings.dat

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                    • Size 152B
                                    • SHA256 2f5ba493c7c4192e9310cea3a96cfec4fd14c6285af6e3659627ab177e560819
                                    • MD5 SHA1 SHA512

                                    Preferences

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                    • Size 6KB
                                    • SHA256 2ed633d96063b3087bf684930ba75d201dabfd9145242f326ed94dcafcc84457
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Preferences

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                    • Size 6KB
                                    • SHA256 648531e20d3ffcc767d4e725376e0ef97169fb2e55487c49cc3f65f92bb2254a
                                    • MD5 SHA1 SHA512 SSDEEP

                                    CURRENT

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                    • Size 16B
                                    • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                    • MD5 SHA1 SHA512

                                    Local State

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                    • Size 9KB
                                    • SHA256 3a700e7ceaa07686b3a572a205c2c27b80f2a41fb15e634ed6a8e9476680cb81
                                    • MD5 SHA1 SHA512 SSDEEP

                                    data_1

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\ShaderCache\GPUCache\data_1
                                    • Size 264KB
                                    • SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
                                    • MD5 SHA1 SHA512 SSDEEP