Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/12/2022, 17:40

General

  • Target
    file.exe
  • Size 312KB
  • Sample221229-v8vzvsdf39
  • SHA256 cdb7554d0c6ac076a7df007baff0f0ea7cc6aa9856c39299dea767d784c136f6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 50 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 19 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 31 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4636
  • C:\Users\Admin\AppData\Local\Temp\F0AE.exe
    C:\Users\Admin\AppData\Local\Temp\F0AE.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Users\Admin\AppData\Local\Temp\Sppyteaet.exe
      "C:\Users\Admin\AppData\Local\Temp\Sppyteaet.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2312
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:5052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 1444
      2⤵
      • Program crash
      PID:748
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --no-first-run --no-default-browser-check --silent-launch --disable-backgrounding-occluded-windows --disable-background-timer-throttling --ran-launcher --profile-directory="Default"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Enumerates system info in registry
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2112
    • 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=89.0.4389.114 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffd7f154f50,0x7ffd7f154f60,0x7ffd7f154f70
      2⤵
        PID:1664
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1604,6668717576122286000,2470213805314948503,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1624 /prefetch:2
        2⤵
          PID:4000
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1604,6668717576122286000,2470213805314948503,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1992 /prefetch:8
          2⤵
            PID:4656
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1604,6668717576122286000,2470213805314948503,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2244 /prefetch:8
            2⤵
              PID:3532
            • 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 --field-trial-handle=1604,6668717576122286000,2470213805314948503,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3544 /prefetch:8
              2⤵
                PID:1732
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 2112 -s 3656
                2⤵
                • Program crash
                PID:560
            • C:\Windows\System32\CompPkgSrv.exe
              C:\Windows\System32\CompPkgSrv.exe -Embedding
              1⤵
                PID:1840
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -pss -s 448 -p 2112 -ip 2112
                1⤵
                  PID:1844
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1080 -ip 1080
                  1⤵
                    PID:2268

                  Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

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                        Downloads

                        F0AE.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\F0AE.exe
                        • Size 5.6MB
                        • SHA256 d32c3e48952c756cdc0990cacf893dc1be197a44e69a46cff7992c67629f50fa
                        • MD5 SHA1 SHA512 SSDEEP

                        F0AE.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\F0AE.exe
                        • Size 5.6MB
                        • SHA256 d32c3e48952c756cdc0990cacf893dc1be197a44e69a46cff7992c67629f50fa
                        • MD5 SHA1 SHA512 SSDEEP

                        Sppyteaet.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\Sppyteaet.exe
                        • Size 1.3MB
                        • SHA256 366ee3319c995b995fcfcc3f2228a18a09d0461a94964b4b4ad9a89dcbf669f4
                        • MD5 SHA1 SHA512 SSDEEP

                        Sppyteaet.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\Sppyteaet.exe
                        • Size 1.3MB
                        • SHA256 366ee3319c995b995fcfcc3f2228a18a09d0461a94964b4b4ad9a89dcbf669f4
                        • MD5 SHA1 SHA512 SSDEEP

                        memory/1080-139-0x0000000000E34000-0x0000000001395000-memory.dmp

                        memory/1080-165-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-177-0x0000000000400000-0x00000000009B4000-memory.dmp

                        memory/1080-140-0x0000000002C40000-0x00000000031F3000-memory.dmp

                        memory/1080-141-0x0000000000400000-0x00000000009B4000-memory.dmp

                        memory/1080-157-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-178-0x0000000007140000-0x0000000007C84000-memory.dmp

                        memory/1080-166-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-180-0x0000000000400000-0x00000000009B4000-memory.dmp

                        memory/1080-163-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-162-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-161-0x0000000007140000-0x0000000007C84000-memory.dmp

                        memory/1080-160-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-158-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-159-0x0000000007EE0000-0x0000000008020000-memory.dmp

                        memory/1080-154-0x0000000007140000-0x0000000007C84000-memory.dmp

                        memory/2312-149-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2312-155-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2312-153-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2312-152-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2312-151-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2312-150-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2312-145-0x00000000030F0000-0x0000000003224000-memory.dmp

                        memory/2348-164-0x0000000008400000-0x0000000008528000-memory.dmp

                        memory/2348-156-0x0000000008400000-0x0000000008528000-memory.dmp

                        memory/2348-179-0x0000000008400000-0x0000000008528000-memory.dmp

                        memory/4636-132-0x0000000000839000-0x000000000084F000-memory.dmp

                        memory/4636-133-0x00000000007F0000-0x00000000007F9000-memory.dmp

                        memory/4636-134-0x0000000000400000-0x0000000000451000-memory.dmp

                        memory/4636-135-0x0000000000400000-0x0000000000451000-memory.dmp

                        memory/5052-168-0x0000000003480000-0x0000000003FC4000-memory.dmp

                        memory/5052-173-0x0000000004150000-0x0000000004290000-memory.dmp

                        memory/5052-174-0x0000000004150000-0x0000000004290000-memory.dmp

                        memory/5052-172-0x0000000003480000-0x0000000003FC4000-memory.dmp

                        memory/5052-176-0x0000000003480000-0x0000000003FC4000-memory.dmp

                        memory/5052-170-0x0000000004150000-0x0000000004290000-memory.dmp

                        memory/5052-171-0x0000000001000000-0x0000000001A25000-memory.dmp

                        memory/5052-169-0x0000000004150000-0x0000000004290000-memory.dmp