Resubmissions

19-11-2022 13:53

221119-q69m1sdh65 1

19-11-2022 13:19

221119-qkp2gsgf91 10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-11-2022 13:19

General

  • Target

    http://cdn.discordapp.com/attachments/1034828826137612332/1034829534593286184/Setup.zip

Malware Config

Signatures

  • BlueFox

    BlueFox is an infostealer written in C# and first seen in December 2021.

  • BlueFox Stealer payload 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Themida packer 3 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell start shell:Appsfolder\Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdge http://cdn.discordapp.com/attachments/1034828826137612332/1034829534593286184/Setup.zip
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4584
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --edge-redirect=Windows.Launch http://cdn.discordapp.com/attachments/1034828826137612332/1034829534593286184/Setup.zip
    1⤵
    • Adds Run key to start application
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1124
    • 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=0xf8,0xfc,0x100,0xd4,0x104,0x7ffde70a46f8,0x7ffde70a4708,0x7ffde70a4718
      2⤵
        PID:1964
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2160 /prefetch:2
        2⤵
          PID:444
        • 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=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2464 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4552
        • 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=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2712 /prefetch:8
          2⤵
            PID:448
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3328 /prefetch:1
            2⤵
              PID:256
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3336 /prefetch:1
              2⤵
                PID:228
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4936 /prefetch:8
                2⤵
                  PID:4716
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5004 /prefetch:8
                  2⤵
                    PID:3352
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4816 /prefetch:1
                    2⤵
                      PID:1504
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5232 /prefetch:1
                      2⤵
                        PID:2036
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=4996 /prefetch:8
                        2⤵
                          PID:992
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5780 /prefetch:1
                          2⤵
                            PID:2440
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5708 /prefetch:8
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:1456
                          • 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=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6520 /prefetch:8
                            2⤵
                              PID:2540
                            • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --configure-user-settings --verbose-logging --system-level --msedge --force-configure-user-settings
                              2⤵
                              • Drops file in Program Files directory
                              PID:2424
                              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x230,0x234,0x238,0x20c,0x108,0x7ff734bc5460,0x7ff734bc5470,0x7ff734bc5480
                                3⤵
                                  PID:3492
                              • 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=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6520 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:4888
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5680 /prefetch:8
                                2⤵
                                  PID:4700
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=6028 /prefetch:8
                                  2⤵
                                    PID:4172
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=5600 /prefetch:2
                                    2⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:4892
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2152,2846468254247767068,2238571163548247108,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=6488 /prefetch:8
                                    2⤵
                                      PID:3580
                                  • C:\Windows\System32\CompPkgSrv.exe
                                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                                    1⤵
                                      PID:4164
                                    • C:\Windows\System32\rundll32.exe
                                      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                      1⤵
                                        PID:5044
                                      • C:\Users\Admin\AppData\Local\Temp\Temp1_Setup.zip\Setup.exe
                                        "C:\Users\Admin\AppData\Local\Temp\Temp1_Setup.zip\Setup.exe"
                                        1⤵
                                        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
                                        • Checks BIOS information in registry
                                        • Suspicious use of NtSetInformationThreadHideFromDebugger
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:4896

                                      Network

                                      MITRE ATT&CK Matrix ATT&CK v6

                                      Persistence

                                      Registry Run Keys / Startup Folder

                                      1
                                      T1060

                                      Defense Evasion

                                      Virtualization/Sandbox Evasion

                                      1
                                      T1497

                                      Modify Registry

                                      1
                                      T1112

                                      Discovery

                                      Query Registry

                                      3
                                      T1012

                                      Virtualization/Sandbox Evasion

                                      1
                                      T1497

                                      System Information Discovery

                                      2
                                      T1082

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      • \??\pipe\LOCAL\crashpad_1124_MTFCLKRQTLNJNFYN
                                        MD5

                                        d41d8cd98f00b204e9800998ecf8427e

                                        SHA1

                                        da39a3ee5e6b4b0d3255bfef95601890afd80709

                                        SHA256

                                        e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                        SHA512

                                        cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                      • memory/228-145-0x0000000000000000-mapping.dmp
                                      • memory/256-143-0x0000000000000000-mapping.dmp
                                      • memory/444-137-0x0000000000000000-mapping.dmp
                                      • memory/448-141-0x0000000000000000-mapping.dmp
                                      • memory/992-155-0x0000000000000000-mapping.dmp
                                      • memory/1456-158-0x0000000000000000-mapping.dmp
                                      • memory/1504-151-0x0000000000000000-mapping.dmp
                                      • memory/1964-135-0x0000000000000000-mapping.dmp
                                      • memory/2036-153-0x0000000000000000-mapping.dmp
                                      • memory/2424-159-0x0000000000000000-mapping.dmp
                                      • memory/2440-157-0x0000000000000000-mapping.dmp
                                      • memory/3352-149-0x0000000000000000-mapping.dmp
                                      • memory/3492-160-0x0000000000000000-mapping.dmp
                                      • memory/3580-175-0x0000000000000000-mapping.dmp
                                      • memory/4172-172-0x0000000000000000-mapping.dmp
                                      • memory/4552-138-0x0000000000000000-mapping.dmp
                                      • memory/4584-133-0x00007FFDE5D10000-0x00007FFDE67D1000-memory.dmp
                                        Filesize

                                        10MB

                                      • memory/4584-134-0x00007FFDE5D10000-0x00007FFDE67D1000-memory.dmp
                                        Filesize

                                        10MB

                                      • memory/4584-132-0x00000205A7820000-0x00000205A7842000-memory.dmp
                                        Filesize

                                        136KB

                                      • memory/4700-167-0x0000000000000000-mapping.dmp
                                      • memory/4716-147-0x0000000000000000-mapping.dmp
                                      • memory/4888-161-0x0000000000000000-mapping.dmp
                                      • memory/4892-173-0x0000000000000000-mapping.dmp
                                      • memory/4896-164-0x0000000077100000-0x00000000772A3000-memory.dmp
                                        Filesize

                                        1MB

                                      • memory/4896-168-0x0000000000F50000-0x0000000001533000-memory.dmp
                                        Filesize

                                        5MB

                                      • memory/4896-169-0x0000000077100000-0x00000000772A3000-memory.dmp
                                        Filesize

                                        1MB

                                      • memory/4896-170-0x0000000073FA0000-0x0000000074551000-memory.dmp
                                        Filesize

                                        5MB

                                      • memory/4896-165-0x0000000073FA0000-0x0000000074551000-memory.dmp
                                        Filesize

                                        5MB

                                      • memory/4896-163-0x0000000000F50000-0x0000000001533000-memory.dmp
                                        Filesize

                                        5MB

                                      • memory/4896-162-0x0000000000F50000-0x0000000001533000-memory.dmp
                                        Filesize

                                        5MB