Analysis

  • max time kernel
    41s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31-01-2024 22:18

General

  • Target

    RblxPredictor.exe

  • Size

    103KB

  • MD5

    d5ddffc51d7b2cc9297d984c120cdde0

  • SHA1

    79449fd5184c14db0ad7cbe9f219e1d74dc3e9d7

  • SHA256

    0858625d045eca0faee93b5f9cd1fa7336d1b9486c31662ca81cb4a96fe7e933

  • SHA512

    9222cd73f9e044fc852e1b131966cc3ec8e3065a6f44c68406fcd208bd8a0d84e52b6e794cb4de61934ffe38bdde92ee6130059a7dd7a42327088ff5cc67ee60

  • SSDEEP

    1536:XDrxkG8nLtvQRq9y/rN9D4za4qMZSn3DMXAijnLu6gtYrm/GdHhVaF7bRmr:Jv8nBvQ89yJ9OqeS3Tirq6gUPmnRmr

Score
10/10

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1202258317611892827/v4k7Pssz-HUQjgkXaGS-5oWtegaSVqWhOFgxXn1UZZWsgQVeIlZd-Tr4G0cbLltW6l-a

Signatures

  • Detect Umbral payload 2 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RblxPredictor.exe
    "C:\Users\Admin\AppData\Local\Temp\RblxPredictor.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Users\Admin\AppData\Local\Temp\Umbral.exe
      "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2704
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:880
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --profile-directory="Default"
      2⤵
      • 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:2984
      • 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,0x7fef2a99758,0x7fef2a99768,0x7fef2a99778
        3⤵
          PID:2688
        • 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=1148 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:2
          3⤵
            PID:2408
          • 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=1524 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:8
            3⤵
              PID:520
            • 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=1624 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:8
              3⤵
                PID:2540
              • 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=2152 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:1
                3⤵
                  PID:576
                • 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=2160 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:1
                  3⤵
                    PID:1520
                  • 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=1420 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:2
                    3⤵
                      PID:2740
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --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=3168 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:1
                      3⤵
                        PID:2056
                      • 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=3404 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:8
                        3⤵
                          PID:2068
                        • 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=3516 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:8
                          3⤵
                            PID:2228
                          • 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=3516 --field-trial-handle=1364,i,12771838708891722495,6993499969797663180,131072 /prefetch:8
                            3⤵
                              PID:2640
                        • 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:332

                          Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

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                          Downloads

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

                            Filesize

                            264KB

                            MD5

                            f50f89a0a91564d0b8a211f8921aa7de

                            SHA1

                            112403a17dd69d5b9018b8cede023cb3b54eab7d

                            SHA256

                            b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                            SHA512

                            bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

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

                            Filesize

                            4KB

                            MD5

                            134d930864fa81e9d40db5195f0746a4

                            SHA1

                            57f9c70ba0130265999341be984aa007ee6e685c

                            SHA256

                            2c4b67ca9d25bc1baa8ee5efc352fefb2739f89e2b29100b5dcae29e6cc16850

                            SHA512

                            4be147d27017e41788dda50b5907d8876999f3a2d6100709ee25c50aee5247afb47668f3343571585843f7de3da98081db3fc9d20de4137f7da4cf72fc2015a4

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

                            Filesize

                            4KB

                            MD5

                            49a0f7851d65b51315e12e51434ae89b

                            SHA1

                            e41399fe951af40e23fb1a3579f02d5788f9953b

                            SHA256

                            b68d43c494577a517390b4425a1f6f563f104645e41933553a96e1f83b2101e4

                            SHA512

                            6d6d758861eb506ac3dcc8cd6362ccd6aa291ab7dc527bbf4b6a684f93a678adf8d87b91738b2fdd7f8a73614be6e756424f9f172a389348ad262718611a1515

                          • 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\Temp\Umbral.exe

                            Filesize

                            229KB

                            MD5

                            d1a1d0ff20cb0de8c91995cfcb92dfcb

                            SHA1

                            368601a5e6f9a0fb885d99daa203143f4a139781

                            SHA256

                            4e07f1db6d857e4a47a991941152c7a7e56a5a49bd5824affeef97fa2018ffa9

                            SHA512

                            75fde06e582d49544cccd4cbfddb5c0cfc7eecba6f48f2ca54aefdb24a3b2bdadff2874afb907fe39d85b2aeb4708831fb8a2fc59c12314ae2517a7c423de764

                          • memory/2124-14-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

                            Filesize

                            9.9MB

                          • memory/2124-0-0x0000000000050000-0x0000000000070000-memory.dmp

                            Filesize

                            128KB

                          • memory/2124-2-0x000000001B170000-0x000000001B1F0000-memory.dmp

                            Filesize

                            512KB

                          • memory/2124-1-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

                            Filesize

                            9.9MB

                          • memory/2704-13-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

                            Filesize

                            9.9MB

                          • memory/2704-53-0x000000001B3B0000-0x000000001B430000-memory.dmp

                            Filesize

                            512KB

                          • memory/2704-10-0x0000000000240000-0x0000000000280000-memory.dmp

                            Filesize

                            256KB

                          • memory/2704-73-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

                            Filesize

                            9.9MB