Analysis

  • max time kernel
    599s
  • max time network
    484s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    05-08-2024 23:54

General

  • Target

    https://cdn.discordapp.com/attachments/1260646969827655813/1266753334573006981/Opti_Loader.exe?ex=66b228fa&is=66b0d77a&hm=500353a6d1ceda8fc39d429700beb5f314461d2f61a6c72a6460d3616c2cbfa5&

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Themida packer 1 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 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 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument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://cdn.discordapp.com/attachments/1260646969827655813/1266753334573006981/Opti_Loader.exe?ex=66b228fa&is=66b0d77a&hm=500353a6d1ceda8fc39d429700beb5f314461d2f61a6c72a6460d3616c2cbfa5&
    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:3692
    • 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=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffca53b9758,0x7ffca53b9768,0x7ffca53b9778
      2⤵
        PID:220
      • 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=1536 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:2
        2⤵
          PID:3748
        • 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=1792 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
          2⤵
            PID:4368
          • 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=2100 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
            2⤵
              PID:32
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --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=2860 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:1
              2⤵
                PID:3700
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2868 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:1
                2⤵
                  PID:2868
                • 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=4944 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
                  2⤵
                    PID:2444
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5316 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
                    2⤵
                      PID:816
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5324 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
                      2⤵
                        PID:4008
                      • 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=5448 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
                        2⤵
                          PID:1768
                        • 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=5716 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
                          2⤵
                            PID:1728
                          • 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=5356 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:8
                            2⤵
                              PID:1396
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.15063.0 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2304 --field-trial-handle=1856,i,3611837304396438380,10900355054717325290,131072 /prefetch:2
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:4544
                          • 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:4992

                            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

                              871B

                              MD5

                              af5d09bd961b53756a745a0beb83b282

                              SHA1

                              4a4be936924d70ce47b6dd87e5d16df19ef769fc

                              SHA256

                              bd17fe60aa0a2f584b9ca7afd84a6f5a76eabb374487ffa0c8dcbe916c9f5cbf

                              SHA512

                              53938e2787e126ce92017015a570298981ea02a7a025fa417cf9de0cbf6555b17859f08dc21ada2d6af8a8cca6453b3c881589919506138e46324c445dbef02d

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

                              Filesize

                              1KB

                              MD5

                              fde65ee2b645b80b5bc0f1aba0104148

                              SHA1

                              487fba75f7bf97bae9da4984429ffacd548e5c35

                              SHA256

                              c695cca1af28ab2eb3bb6d98ebe6fccfb67ef051abd0f2dc1d4e9998b599dbf9

                              SHA512

                              cea38fb6a1ad4c110044ad83a6a21708cd1881473c8dd6672e15c1b9eb9085f42d6e91b16d70403a9c9e69e1db4ee38c6a38df0417b530a56ea86c06f0a61ec3

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

                              Filesize

                              6KB

                              MD5

                              b1473664f565ec800d58c71e8df535d1

                              SHA1

                              ea08db4739d4b65ebb77838d7bf4214a74a1a3ba

                              SHA256

                              4265e5f2c881edca9aaf45f06de9a8f5dc2187906c126293e3597ca18a8a4875

                              SHA512

                              a302942b7c758309b25b2a75451a610c9431eff1cf685a20af3a5e700652472ac29ed6386596fc36fbd59b2655eb973696493c289a0705ae028807b7a2e79118

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

                              Filesize

                              6KB

                              MD5

                              7841d10c8fdeb7a53d7a482372592e5f

                              SHA1

                              5f0f88cd1ebe99182fb06dcd2b49e233dee15d6e

                              SHA256

                              47e2ac1e2523de2be6848c54161bee4dc367520240fc8aab41947be1a89bc810

                              SHA512

                              b5239f8828486e5cfc4d3c4592c9dc8cc1fe1fc30790549b555ec0cff0e04f2e7a0abaeba332adb7d6af9cf25d13ca8fc18a28b3f3a30289287fe2066ba6f1e6

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

                              Filesize

                              137KB

                              MD5

                              8603a448f6447dc29b749914251fe678

                              SHA1

                              fe167c868d3b2d499cafbf15ec1db16891c95e94

                              SHA256

                              610178d2fc431afe17a1c68e79440e8bf6bbdf0ae2fbe7a4ea50918366f2acb7

                              SHA512

                              f2e10aba1cbc41232a0c235641ebebfc4bae1510d87bb4349f0f079293b72c89bf931fa367bd444bfc3d3a979a921f830ee82ec9a0c67771dba7ef65d392087b

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

                              Filesize

                              138KB

                              MD5

                              52bd2e9286b2e0e1b882082e8ea54fb0

                              SHA1

                              de49bf172314eac7b86ae2a394c7f8db61968c38

                              SHA256

                              0e51f8dddb72b680bcb45ed283d60e1ee51ba509fe180887fee8065d7bbdca22

                              SHA512

                              72947023ac6f8273312174b16c108573f9d4c4e393b25ed629787319d89286e41cd19e31f1409ccf59e1a60f396f99227019266f52b67ab847eeb93ad6314e04

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

                              Filesize

                              138KB

                              MD5

                              1994cf5599d4817f692c1ddf5f6befd0

                              SHA1

                              3cbdc8774817fc71ce280c58bca02233cac4247d

                              SHA256

                              ec47d69cae195047b6239656146af8501ed5fe5689996ebba65548cad0635e86

                              SHA512

                              825214c0c9d8e70ff74f1db69210a66e1d0580d136ce7f16607f7e3401dfd90452e3dd99ad7a4a0b6af28f99e99313c4d394b395c67409e346481ef81f66c05b

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

                              Filesize

                              2B

                              MD5

                              99914b932bd37a50b983c5e7c90ae93b

                              SHA1

                              bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

                              SHA256

                              44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

                              SHA512

                              27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

                            • C:\Users\Admin\Downloads\Unconfirmed 148549.crdownload

                              Filesize

                              5.4MB

                              MD5

                              4e81cc43ff21582b7068af73baf91cad

                              SHA1

                              38de2e8983be686a9388c55d10f70a9bd2916aaf

                              SHA256

                              d0aaee10a6723de6e76d0c337b0bb3547c427d3f17b067fb570501ee7fce9063

                              SHA512

                              00cc6b34d64f918c86a087235d7dcae33e9d78a9a4b9cac6478a2e04ceab5aac01543f09e85a8b66885bc2b052dd7e60304685796e2b5e8ffb0db2de105fa489