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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
    30/12/2022, 07:22

General

  • Target

    file.exe

  • Size

    234KB

  • MD5

    37dcfb749e32ace6713af440055191cc

  • SHA1

    5d7aca9da4a23501472c4c6890ad8b1ee81f84f8

  • SHA256

    fd992bf567d01e447568f0297f9f6b4923c0e3250d6a73d158905e505bc76e1a

  • SHA512

    1f13820c71c4a988614103ae22419af9b8c59f8ff8ddc5b83cc359a80552ac8aadc626d01e2dbe4871a02be6153ffeeeaa2ea3c71310f4774f0b80e8594120a2

  • SSDEEP

    3072:jyn4LSjRE/z/Cr9bneaMzuwZgd9MP4fLU8y5/LU8y5tCAlMB6xuqqb53y1t/M:04LSuL/c9rreNZEfo5oHCApx3E5

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 38 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:4436
  • C:\Users\Admin\AppData\Local\Temp\594B.exe
    C:\Users\Admin\AppData\Local\Temp\594B.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4608
    • 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:3532
    • 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:1324
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1324 -s 1316
        3⤵
        • Program crash
        PID:1052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 1156
      2⤵
      • Program crash
      PID:740
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1324 -ip 1324
    1⤵
      PID:2244
    • 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:2532
      • 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,0x100,0x104,0xd8,0x108,0x7ff87dff4f50,0x7ff87dff4f60,0x7ff87dff4f70
        2⤵
          PID:5100
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1616,13231478413717154477,5592156527530065,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1628 /prefetch:2
          2⤵
            PID:3240
          • 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=1616,13231478413717154477,5592156527530065,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2008 /prefetch:8
            2⤵
              PID:3364
            • 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=1616,13231478413717154477,5592156527530065,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2264 /prefetch:8
              2⤵
                PID:520
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 2532 -s 3600
                2⤵
                • Program crash
                PID:4664
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4608 -ip 4608
              1⤵
                PID:1908
              • C:\Windows\System32\CompPkgSrv.exe
                C:\Windows\System32\CompPkgSrv.exe -Embedding
                1⤵
                  PID:1532
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -pss -s 532 -p 2532 -ip 2532
                  1⤵
                    PID:3320

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\594B.exe

                    Filesize

                    5.5MB

                    MD5

                    2d05d40bf8b8f7a5fef6ee03635ee661

                    SHA1

                    a2bb2e61aad5f942ab02e1c8a1799514dab87f67

                    SHA256

                    cb5580ed90a07c4c082f91679745742de742b1846d25b52e2b7d5791df4eddb7

                    SHA512

                    e3955e705f7d39eb49019cf4815cbb5f4030c33404b546e5f381f17fe34479d34d46c2634226bb1420fb9fe0359f93ddd33837a1cc2fb6c9e91b88eef8f6689d

                  • C:\Users\Admin\AppData\Local\Temp\594B.exe

                    Filesize

                    5.5MB

                    MD5

                    2d05d40bf8b8f7a5fef6ee03635ee661

                    SHA1

                    a2bb2e61aad5f942ab02e1c8a1799514dab87f67

                    SHA256

                    cb5580ed90a07c4c082f91679745742de742b1846d25b52e2b7d5791df4eddb7

                    SHA512

                    e3955e705f7d39eb49019cf4815cbb5f4030c33404b546e5f381f17fe34479d34d46c2634226bb1420fb9fe0359f93ddd33837a1cc2fb6c9e91b88eef8f6689d

                  • C:\Users\Admin\AppData\Local\Temp\Sppyteaet.exe

                    Filesize

                    1.3MB

                    MD5

                    ff6a5732355485b459248f586c2b6945

                    SHA1

                    07da3f03ef18e2eaddfceb050b68e93fd533f7a3

                    SHA256

                    366ee3319c995b995fcfcc3f2228a18a09d0461a94964b4b4ad9a89dcbf669f4

                    SHA512

                    379fd03ebec85a9b15caf0aa8ba5a43c76199391ba3a2b29d20426501294e66d8f07c219e05355b47702e5a836d1a89015533f72da6bbe2ded57ee5d24056749

                  • C:\Users\Admin\AppData\Local\Temp\Sppyteaet.exe

                    Filesize

                    1.3MB

                    MD5

                    ff6a5732355485b459248f586c2b6945

                    SHA1

                    07da3f03ef18e2eaddfceb050b68e93fd533f7a3

                    SHA256

                    366ee3319c995b995fcfcc3f2228a18a09d0461a94964b4b4ad9a89dcbf669f4

                    SHA512

                    379fd03ebec85a9b15caf0aa8ba5a43c76199391ba3a2b29d20426501294e66d8f07c219e05355b47702e5a836d1a89015533f72da6bbe2ded57ee5d24056749

                  • memory/1324-168-0x0000000003570000-0x00000000036B0000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1324-174-0x00000000028E0000-0x0000000003424000-memory.dmp

                    Filesize

                    11.3MB

                  • memory/1324-172-0x0000000003570000-0x00000000036B0000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1324-173-0x0000000003570000-0x00000000036B0000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1324-171-0x00000000028E0000-0x0000000003424000-memory.dmp

                    Filesize

                    11.3MB

                  • memory/1324-170-0x0000000000410000-0x0000000000E35000-memory.dmp

                    Filesize

                    10.1MB

                  • memory/1324-169-0x0000000003570000-0x00000000036B0000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1324-167-0x00000000028E0000-0x0000000003424000-memory.dmp

                    Filesize

                    11.3MB

                  • memory/1996-155-0x00000000083F0000-0x0000000008518000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1996-180-0x00000000083F0000-0x0000000008518000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/1996-177-0x00000000083F0000-0x0000000008518000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-151-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-150-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-154-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-152-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-145-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-153-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/3532-149-0x0000000000400000-0x0000000000534000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4436-133-0x0000000002190000-0x0000000002199000-memory.dmp

                    Filesize

                    36KB

                  • memory/4436-135-0x0000000000400000-0x000000000045E000-memory.dmp

                    Filesize

                    376KB

                  • memory/4436-134-0x0000000000400000-0x000000000045E000-memory.dmp

                    Filesize

                    376KB

                  • memory/4436-132-0x00000000005F9000-0x000000000060A000-memory.dmp

                    Filesize

                    68KB

                  • memory/4608-160-0x0000000007150000-0x0000000007C94000-memory.dmp

                    Filesize

                    11.3MB

                  • memory/4608-157-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-164-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-159-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-163-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-162-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-161-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-158-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-165-0x0000000007EF0000-0x0000000008030000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4608-141-0x0000000000400000-0x00000000009B4000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/4608-175-0x0000000000400000-0x00000000009B4000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/4608-176-0x0000000007150000-0x0000000007C94000-memory.dmp

                    Filesize

                    11.3MB

                  • memory/4608-140-0x0000000002CF0000-0x00000000032A3000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/4608-156-0x0000000007150000-0x0000000007C94000-memory.dmp

                    Filesize

                    11.3MB

                  • memory/4608-179-0x0000000000400000-0x00000000009B4000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/4608-139-0x0000000002789000-0x0000000002CEA000-memory.dmp

                    Filesize

                    5.4MB