Analysis

  • max time kernel
    157s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2022, 01:10

General

  • Target
    file.exe
  • Size 313KB
  • Sample221230-bjdjqsef49
  • SHA256 e785cb8a0b8a53fafc2de971d86c526b772aa4881e2c0bbf579872c1ce3020c1
  • 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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 3 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
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 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:4916
  • C:\Users\Admin\AppData\Local\Temp\153D.exe
    C:\Users\Admin\AppData\Local\Temp\153D.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4884
    • 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:4244
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2860
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2860 -s 1324
        3⤵
        • Program crash
        PID:2912
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 1156
      2⤵
      • Program crash
      PID:1000
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2860 -ip 2860
    1⤵
      PID:3560
    • 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:1828
      • 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,0x100,0x104,0xd8,0x108,0x7ffb5dcf4f50,0x7ffb5dcf4f60,0x7ffb5dcf4f70
        2⤵
          PID:3120
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1640,3262848639684189972,11967793229995240656,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1660 /prefetch:2
          2⤵
            PID:1668
          • 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=1640,3262848639684189972,11967793229995240656,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2020 /prefetch:8
            2⤵
              PID:3000
            • 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=1640,3262848639684189972,11967793229995240656,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2300 /prefetch:8
              2⤵
                PID:1928
              • 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=1640,3262848639684189972,11967793229995240656,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3600 /prefetch:8
                2⤵
                  PID:3080
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -u -p 1828 -s 3608
                  2⤵
                  • Program crash
                  PID:1244
              • C:\Windows\System32\CompPkgSrv.exe
                C:\Windows\System32\CompPkgSrv.exe -Embedding
                1⤵
                  PID:788
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4884 -ip 4884
                  1⤵
                    PID:2644
                  • C:\Windows\system32\WerFault.exe
                    C:\Windows\system32\WerFault.exe -pss -s 528 -p 1828 -ip 1828
                    1⤵
                      PID:396

                    Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          153D.exe

                          • Path C:\Users\Admin\AppData\Local\Temp\153D.exe
                          • Size 5.6MB
                          • SHA256 37ce7809daade4eae9f62799148e2e329cc41cc33a1b090118c4f892f6f647e1
                          • MD5 SHA1 SHA512 SSDEEP

                          153D.exe

                          • Path C:\Users\Admin\AppData\Local\Temp\153D.exe
                          • Size 5.6MB
                          • SHA256 37ce7809daade4eae9f62799148e2e329cc41cc33a1b090118c4f892f6f647e1
                          • 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/2620-180-0x0000000007BF0000-0x0000000007D18000-memory.dmp

                          memory/2620-175-0x0000000007BF0000-0x0000000007D18000-memory.dmp

                          memory/2620-158-0x0000000008B0B000-0x0000000008B0D000-memory.dmp

                          memory/2620-155-0x0000000007BF0000-0x0000000007D18000-memory.dmp

                          memory/2860-169-0x0000000003E70000-0x0000000003FB0000-memory.dmp

                          memory/2860-174-0x0000000003160000-0x0000000003CA4000-memory.dmp

                          memory/2860-173-0x0000000003160000-0x0000000003CA4000-memory.dmp

                          memory/2860-172-0x0000000003E70000-0x0000000003FB0000-memory.dmp

                          memory/2860-171-0x0000000003E70000-0x0000000003FB0000-memory.dmp

                          memory/2860-170-0x0000000000C40000-0x0000000001665000-memory.dmp

                          memory/2860-168-0x0000000003E70000-0x0000000003FB0000-memory.dmp

                          memory/2860-167-0x0000000003160000-0x0000000003CA4000-memory.dmp

                          memory/4244-154-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4244-145-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4244-149-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4244-150-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4244-151-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4244-152-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4244-153-0x0000000000400000-0x0000000000534000-memory.dmp

                          memory/4884-156-0x0000000007140000-0x0000000007C84000-memory.dmp

                          memory/4884-163-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-164-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-165-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-161-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-160-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-179-0x0000000000400000-0x00000000009B4000-memory.dmp

                          memory/4884-157-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-159-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-140-0x0000000002B70000-0x0000000003123000-memory.dmp

                          memory/4884-139-0x000000000260E000-0x0000000002B6F000-memory.dmp

                          memory/4884-162-0x0000000007EE0000-0x0000000008020000-memory.dmp

                          memory/4884-141-0x0000000000400000-0x00000000009B4000-memory.dmp

                          memory/4884-178-0x0000000007140000-0x0000000007C84000-memory.dmp

                          memory/4884-177-0x0000000000400000-0x00000000009B4000-memory.dmp

                          memory/4916-134-0x0000000000400000-0x0000000000453000-memory.dmp

                          memory/4916-135-0x0000000000400000-0x0000000000453000-memory.dmp

                          memory/4916-132-0x0000000000669000-0x000000000067F000-memory.dmp

                          memory/4916-133-0x00000000005B0000-0x00000000005B9000-memory.dmp