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Resubmissions

08/07/2024, 09:40

240708-lnmnbatapr 1

08/07/2024, 09:37

240708-llvk5stajj 1

Analysis

  • max time kernel
    117s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/07/2024, 09:40

General

  • Target

    https://p20.zdusercontent.com/attachment/24126/FtnWKCSX8kjXDDQt3c6iSmrDm?

Score
1/10

Malware Config

Signatures

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 33 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://p20.zdusercontent.com/attachment/24126/FtnWKCSX8kjXDDQt3c6iSmrDm?
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2448
    • 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=110.0.5481.104 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffc63f4ab58,0x7ffc63f4ab68,0x7ffc63f4ab78
      2⤵
        PID:224
      • 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=1680 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:2
        2⤵
          PID:2568
        • 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=2164 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:8
          2⤵
            PID:3868
          • 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=service --mojo-platform-channel-handle=2212 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:8
            2⤵
              PID:2984
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --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=2996 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:1
              2⤵
                PID:1680
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3004 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:1
                2⤵
                  PID:4196
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4668 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:8
                  2⤵
                    PID:1372
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4736 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:8
                    2⤵
                      PID:4160
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4852 --field-trial-handle=1912,i,7606167989496029990,8278297976886867166,131072 /prefetch:8
                      2⤵
                        PID:3112
                    • C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe
                      "C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe"
                      1⤵
                        PID:2276
                      • C:\Windows\System32\rundll32.exe
                        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                        1⤵
                          PID:2052
                        • C:\Windows\system32\OpenWith.exe
                          C:\Windows\system32\OpenWith.exe -Embedding
                          1⤵
                          • Modifies registry class
                          • Suspicious use of SetWindowsHookEx
                          PID:4540
                          • C:\Windows\system32\NOTEPAD.EXE
                            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Downloads\PaymentAdvice92872.html
                            2⤵
                            • Opens file in notepad (likely ransom note)
                            PID:1168

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

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                        Downloads

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                          Filesize

                          1KB

                          MD5

                          b2dc363781bd3be113dccaa4e3a5a46f

                          SHA1

                          a2445e379d2dcd155721961cf1d1afb158d44991

                          SHA256

                          2113cf1c583322879cd35fca18f7241a2da727d8d91ca8fe7b0ba8d59e730f66

                          SHA512

                          c23b6fcac08fd356e554de5d6a8e8ef9c637490f5e6165a14ce6072837d0b76b987c7264e895f77f1d3d10833f38fbfce48dc75f9d0a2b0f80a55541cadc16f0

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                          Filesize

                          1KB

                          MD5

                          45cf92bf655e8170a2fa93c2a305131c

                          SHA1

                          93b8e7aaa0dab6a64944eb099284a7d3403b7585

                          SHA256

                          243ebf62305a4b83030b9bde36c85835f6d637d89768641d96ad866ba0ef8d3c

                          SHA512

                          c5464c98bc4a143dad8141d4a7c77b64740e89fd29dcba3f201c9ce9d0680b548dc0e2b850d69bac85c18d8056f8b747776352592d8d2e93ead48caa65b3af19

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                          Filesize

                          2B

                          MD5

                          d751713988987e9331980363e24189ce

                          SHA1

                          97d170e1550eee4afc0af065b78cda302a97674c

                          SHA256

                          4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                          SHA512

                          b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                          Filesize

                          523B

                          MD5

                          f3d90d0629ae9cb8fe7589035b464bbe

                          SHA1

                          3a2864f98917aa0bb833d554275828e0bc385ee6

                          SHA256

                          ca5483a459364d702fc499e52e521043a82ad39279a1aad7a1998eaf40e9fa08

                          SHA512

                          f411369ec16cc4037f23de618d125f809925394ec89d9d9c1c824f25072866a547134c1e6217806c7292d6bbd9de385ae9ad901cb335553f0e7b773f202850ad

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          6KB

                          MD5

                          e6b169ade172725a96c3b7c1626860bf

                          SHA1

                          25b45363e86eceb6802748d088645e5ab896ea2a

                          SHA256

                          d1259eca1ca82a22456b8e75db9178fa0e93248420ed3c163b9ed601b34587de

                          SHA512

                          523a25a0a293d2ecf6bacef213f55d451bd853dd5d2e2be3f2e85b6945a682deb168108ada9935a520b1788d8847d593237d6dd9f51f8d0825b327e07c8e8271

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

                          Filesize

                          144KB

                          MD5

                          2a06db6ad563a7bb2a56834109f0ac1f

                          SHA1

                          3502cb550caee64f669797744c677e8781063b9a

                          SHA256

                          3aca295a7e50353a3d495fd211c81f4c47ed0f887d8e393080d00a9badf770a0

                          SHA512

                          0be2326b6e7bae2baa37f4b895eee12cffb2e68fd58e1b26ee7d3a9c4c3d1e279a047f1c803f53f692fa51e9c55cc9fe6f8a65ad73dac3ac9b8c5b8c2ee08f5d

                        • C:\Users\Admin\Downloads\PaymentAdvice92872.html

                          Filesize

                          13KB

                          MD5

                          c63f7ee42bbd092231e80bc4195fb3d1

                          SHA1

                          769e185b34ad08b221fbdb52578d59c3702e1b99

                          SHA256

                          ab1adea98b56c7eda6b633a502a78af9a5c91e0385773983bde3d3738449800e

                          SHA512

                          b4fc57deb68fde510b3833283e37e6fce02d5ce79074aaefaf927202dcabb40f4770fbdf006d437e62fab781f53e498e6cf32bff5c80a2529945baaa7b1b2fb2