Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2022, 16:08

General

  • Target
    file.exe
  • Size 164KB
  • Sample221107-tk8elshcfq
  • SHA256 21c9461e628bf580928278641131f0215e89dca8e89649e2c74bdb0725d7749f
  • 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 installed software on the system 1 TTPs

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

  • 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 4 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 51 IoCs

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

  • 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 25 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 7 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:2016
  • C:\Users\Admin\AppData\Local\Temp\319F.exe
    C:\Users\Admin\AppData\Local\Temp\319F.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 816
      2⤵
      • Program crash
      PID:1684
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 816
      2⤵
      • Program crash
      PID:4948
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 956
      2⤵
      • Program crash
      PID:4092
    • 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:4052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 972
      2⤵
      • Program crash
      PID:3656
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1736 -ip 1736
    1⤵
      PID:3052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1736 -ip 1736
      1⤵
        PID:2324
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1736 -ip 1736
        1⤵
          PID:4424
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1736 -ip 1736
          1⤵
            PID:4888
          • C:\Users\Admin\AppData\Roaming\wswidvv
            C:\Users\Admin\AppData\Roaming\wswidvv
            1⤵
            • Executes dropped EXE
            • Checks SCSI registry key(s)
            • Suspicious behavior: MapViewOfSection
            PID:3640

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                319F.exe

                • Path C:\Users\Admin\AppData\Local\Temp\319F.exe
                • Size 4.8MB
                • SHA256 50992f2a903c2adfc7fc0425f37114b66e208a8b80aa67be7edc4a51ea4f00fc
                • MD5 SHA1 SHA512 SSDEEP

                319F.exe

                • Path C:\Users\Admin\AppData\Local\Temp\319F.exe
                • Size 4.8MB
                • SHA256 50992f2a903c2adfc7fc0425f37114b66e208a8b80aa67be7edc4a51ea4f00fc
                • MD5 SHA1 SHA512 SSDEEP

                JavaDeployReg.log

                • Path C:\Users\Admin\AppData\Local\Temp\JavaDeployReg.log
                • Size 25KB
                • SHA256 d29a41b75f239f44583c1bba3120b2adaea44e4a3e22a75609590ce213d1690c
                • MD5 SHA1 SHA512 SSDEEP

                Saofurhaqqiry.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\Saofurhaqqiry.tmp
                • Size 3.5MB
                • SHA256 30bd9cf5ebd5bb94e9b35366a213d00c818471af761f0e470f78c879b0e179dc
                • MD5 SHA1 SHA512 SSDEEP

                wswidvv

                • Path C:\Users\Admin\AppData\Roaming\wswidvv
                • Size 164KB
                • SHA256 21c9461e628bf580928278641131f0215e89dca8e89649e2c74bdb0725d7749f
                • MD5 SHA1 SHA512 SSDEEP

                wswidvv

                • Path C:\Users\Admin\AppData\Roaming\wswidvv
                • Size 164KB
                • SHA256 21c9461e628bf580928278641131f0215e89dca8e89649e2c74bdb0725d7749f
                • MD5 SHA1 SHA512 SSDEEP

                memory/1736-150-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-152-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-140-0x000000000102F000-0x00000000014E4000-memory.dmp

                memory/1736-141-0x0000000002C90000-0x00000000032FF000-memory.dmp

                memory/1736-142-0x0000000000400000-0x0000000000A7C000-memory.dmp

                memory/1736-143-0x0000000000400000-0x0000000000A7C000-memory.dmp

                memory/1736-144-0x0000000003920000-0x0000000004493000-memory.dmp

                memory/1736-145-0x0000000003920000-0x0000000004493000-memory.dmp

                memory/1736-146-0x0000000003920000-0x0000000004493000-memory.dmp

                memory/1736-147-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-148-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-149-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-151-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-165-0x0000000000400000-0x0000000000A7C000-memory.dmp

                memory/1736-167-0x0000000003920000-0x0000000004493000-memory.dmp

                memory/1736-153-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-154-0x0000000004770000-0x00000000048B0000-memory.dmp

                memory/1736-139-0x0000000000400000-0x0000000000A7C000-memory.dmp

                memory/2016-133-0x00000000006D0000-0x00000000006D9000-memory.dmp

                memory/2016-135-0x0000000000400000-0x0000000000585000-memory.dmp

                memory/2016-134-0x0000000000400000-0x0000000000585000-memory.dmp

                memory/2016-132-0x0000000000837000-0x0000000000848000-memory.dmp

                memory/3640-171-0x0000000000400000-0x0000000000585000-memory.dmp

                memory/3640-170-0x00000000007C7000-0x00000000007D7000-memory.dmp

                memory/3640-172-0x0000000000400000-0x0000000000585000-memory.dmp

                memory/4052-164-0x0000000004350000-0x0000000004490000-memory.dmp

                memory/4052-166-0x0000000003710000-0x0000000004283000-memory.dmp

                memory/4052-163-0x0000000004350000-0x0000000004490000-memory.dmp

                memory/4052-162-0x0000000001220000-0x0000000001C73000-memory.dmp

                memory/4052-159-0x0000000004350000-0x0000000004490000-memory.dmp

                memory/4052-158-0x0000000004350000-0x0000000004490000-memory.dmp

                memory/4052-157-0x0000000003710000-0x0000000004283000-memory.dmp

                memory/4052-156-0x0000000003710000-0x0000000004283000-memory.dmp