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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/12/2022, 18:07

General

  • Target

    afc2e82908e33ed18369797088e118c93880c07ed785946f6a351aa8bef739fc.exe

  • Size

    312KB

  • MD5

    88e84db01e522fe947af3f5359fa7fa4

  • SHA1

    90b859b5f355d9c5fa8500a403d16fd38f53a79f

  • SHA256

    afc2e82908e33ed18369797088e118c93880c07ed785946f6a351aa8bef739fc

  • SHA512

    0a7452621387c5e4009de2a78e531f1c2fd3f0a1964dc2f97066fb70af3ef30f19bd53def44cf0c41658f6faa81663153652886d497ae1aa0670218e14c376c5

  • SSDEEP

    6144:DLt0OQU1eXjJQX1G9AEsLbMSmLDsxyIxZ1WqqdS09R:Dh0OQU4XjJQX1VV/dYX

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 3 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.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
  • 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 6 IoCs

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

  • Checks processor information in registry 2 TTPs 49 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 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
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\afc2e82908e33ed18369797088e118c93880c07ed785946f6a351aa8bef739fc.exe
    "C:\Users\Admin\AppData\Local\Temp\afc2e82908e33ed18369797088e118c93880c07ed785946f6a351aa8bef739fc.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3064
  • C:\Users\Admin\AppData\Local\Temp\4362.exe
    C:\Users\Admin\AppData\Local\Temp\4362.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:5040
    • 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:5088
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
      • Accesses Microsoft Outlook accounts
      • Accesses Microsoft Outlook profiles
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • outlook_office_path
      • outlook_win_path
      PID:2208
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5040 -s 1164
      2⤵
      • Program crash
      PID:3844
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 5040 -ip 5040
    1⤵
      PID:984
    • 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:5096
      • 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,0x100,0x104,0xd8,0x108,0x7ffa1a6b4f50,0x7ffa1a6b4f60,0x7ffa1a6b4f70
        2⤵
          PID:3436
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1640,12791064056842922374,15366452526070471525,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1656 /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=1640,12791064056842922374,15366452526070471525,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1980 /prefetch:8
            2⤵
              PID:1624
            • 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=1640,12791064056842922374,15366452526070471525,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2412 /prefetch:8
              2⤵
                PID:688
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 5096 -s 3116
                2⤵
                • Program crash
                PID:4620
            • C:\Windows\System32\CompPkgSrv.exe
              C:\Windows\System32\CompPkgSrv.exe -Embedding
              1⤵
                PID:1504
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -pss -s 556 -p 5096 -ip 5096
                1⤵
                  PID:2652
                • C:\Users\Admin\AppData\Roaming\gvrucgd
                  C:\Users\Admin\AppData\Roaming\gvrucgd
                  1⤵
                  • Executes dropped EXE
                  • Checks SCSI registry key(s)
                  • Suspicious behavior: MapViewOfSection
                  PID:528

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Users\Admin\AppData\Local\Temp\4362.exe

                  Filesize

                  5.6MB

                  MD5

                  2865cc8250e8d72b957c304a3a5ab4d3

                  SHA1

                  1fd166072b73e090968c83c76b324b5399f5dde8

                  SHA256

                  d32c3e48952c756cdc0990cacf893dc1be197a44e69a46cff7992c67629f50fa

                  SHA512

                  9fffd64f5b62e2e362058f968e41532d1894e5de40d2fb8b994f76e9813d09b0b0db7babcb0efa284804612e9141555053343b262fa7bea882e43d119677a64b

                • C:\Users\Admin\AppData\Local\Temp\4362.exe

                  Filesize

                  5.6MB

                  MD5

                  2865cc8250e8d72b957c304a3a5ab4d3

                  SHA1

                  1fd166072b73e090968c83c76b324b5399f5dde8

                  SHA256

                  d32c3e48952c756cdc0990cacf893dc1be197a44e69a46cff7992c67629f50fa

                  SHA512

                  9fffd64f5b62e2e362058f968e41532d1894e5de40d2fb8b994f76e9813d09b0b0db7babcb0efa284804612e9141555053343b262fa7bea882e43d119677a64b

                • 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

                • C:\Users\Admin\AppData\Roaming\gvrucgd

                  Filesize

                  312KB

                  MD5

                  88e84db01e522fe947af3f5359fa7fa4

                  SHA1

                  90b859b5f355d9c5fa8500a403d16fd38f53a79f

                  SHA256

                  afc2e82908e33ed18369797088e118c93880c07ed785946f6a351aa8bef739fc

                  SHA512

                  0a7452621387c5e4009de2a78e531f1c2fd3f0a1964dc2f97066fb70af3ef30f19bd53def44cf0c41658f6faa81663153652886d497ae1aa0670218e14c376c5

                • C:\Users\Admin\AppData\Roaming\gvrucgd

                  Filesize

                  312KB

                  MD5

                  88e84db01e522fe947af3f5359fa7fa4

                  SHA1

                  90b859b5f355d9c5fa8500a403d16fd38f53a79f

                  SHA256

                  afc2e82908e33ed18369797088e118c93880c07ed785946f6a351aa8bef739fc

                  SHA512

                  0a7452621387c5e4009de2a78e531f1c2fd3f0a1964dc2f97066fb70af3ef30f19bd53def44cf0c41658f6faa81663153652886d497ae1aa0670218e14c376c5

                • memory/528-187-0x0000000000400000-0x0000000000452000-memory.dmp

                  Filesize

                  328KB

                • memory/528-188-0x0000000000400000-0x0000000000452000-memory.dmp

                  Filesize

                  328KB

                • memory/528-186-0x00000000005E8000-0x00000000005FD000-memory.dmp

                  Filesize

                  84KB

                • memory/2208-173-0x00000000014A0000-0x00000000015E0000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2208-168-0x0000000000600000-0x0000000001025000-memory.dmp

                  Filesize

                  10.1MB

                • memory/2208-169-0x0000000002C90000-0x00000000037D4000-memory.dmp

                  Filesize

                  11.3MB

                • memory/2208-170-0x00000000014A0000-0x00000000015E0000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2208-171-0x00000000014A0000-0x00000000015E0000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2208-172-0x0000000002C90000-0x00000000037D4000-memory.dmp

                  Filesize

                  11.3MB

                • memory/2208-176-0x0000000000600000-0x0000000001025000-memory.dmp

                  Filesize

                  10.1MB

                • memory/2208-175-0x0000000002C90000-0x00000000037D4000-memory.dmp

                  Filesize

                  11.3MB

                • memory/2208-174-0x00000000014A0000-0x00000000015E0000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2648-158-0x0000000008040000-0x0000000008168000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2648-179-0x0000000008DE0000-0x0000000008DE2000-memory.dmp

                  Filesize

                  8KB

                • memory/2648-181-0x0000000008040000-0x0000000008168000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2648-183-0x0000000008040000-0x0000000008168000-memory.dmp

                  Filesize

                  1.2MB

                • memory/2648-164-0x0000000008DE0000-0x0000000008DE2000-memory.dmp

                  Filesize

                  8KB

                • memory/3064-133-0x00000000007B0000-0x00000000007B9000-memory.dmp

                  Filesize

                  36KB

                • memory/3064-134-0x0000000000400000-0x0000000000452000-memory.dmp

                  Filesize

                  328KB

                • memory/3064-132-0x0000000000818000-0x000000000082E000-memory.dmp

                  Filesize

                  88KB

                • memory/3064-135-0x0000000000400000-0x0000000000452000-memory.dmp

                  Filesize

                  328KB

                • memory/5040-161-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-177-0x0000000000400000-0x00000000009B4000-memory.dmp

                  Filesize

                  5.7MB

                • memory/5040-166-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-163-0x0000000007240000-0x0000000007D84000-memory.dmp

                  Filesize

                  11.3MB

                • memory/5040-162-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-160-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-159-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-154-0x0000000007240000-0x0000000007D84000-memory.dmp

                  Filesize

                  11.3MB

                • memory/5040-157-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-156-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-139-0x0000000000C37000-0x0000000001198000-memory.dmp

                  Filesize

                  5.4MB

                • memory/5040-140-0x0000000002B80000-0x0000000003133000-memory.dmp

                  Filesize

                  5.7MB

                • memory/5040-165-0x0000000007FF0000-0x0000000008130000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5040-178-0x0000000007240000-0x0000000007D84000-memory.dmp

                  Filesize

                  11.3MB

                • memory/5040-141-0x0000000000400000-0x00000000009B4000-memory.dmp

                  Filesize

                  5.7MB

                • memory/5040-180-0x0000000000400000-0x00000000009B4000-memory.dmp

                  Filesize

                  5.7MB

                • memory/5088-150-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5088-149-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5088-145-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5088-151-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5088-152-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5088-153-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB

                • memory/5088-155-0x0000000002950000-0x0000000002A84000-memory.dmp

                  Filesize

                  1.2MB