Analysis

  • max time kernel
    151s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 00:47

General

  • Target
    file.exe
  • Size 285KB
  • Sample221106-a47smsade8
  • SHA256 0db7c2b665f89c60f04f93f647659da9b645ca6fc5a3215d91267799dc8dda94
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 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 5 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 46 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 30 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 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:1212
  • C:\Users\Admin\AppData\Local\Temp\ECC6.exe
    C:\Users\Admin\AppData\Local\Temp\ECC6.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
      • Blocklisted process makes network request
      PID:3676
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 584
      2⤵
      • Program crash
      PID:996
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 860
      2⤵
      • Program crash
      PID:560
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 860
      2⤵
      • Program crash
      PID:3588
    • 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 FindShellTrayWindow
      PID:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 1052
      2⤵
      • Program crash
      PID:840
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 1060
      2⤵
      • Program crash
      PID:2540
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4984 -ip 4984
    1⤵
      PID:3592
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4984 -ip 4984
      1⤵
        PID:1712
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4984 -ip 4984
        1⤵
          PID:4292
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4984 -ip 4984
          1⤵
            PID:1324
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4984 -ip 4984
            1⤵
              PID:4608

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  ECC6.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\ECC6.exe
                  • Size 1.3MB
                  • SHA256 454360fe35928d10305c303b6876205149f6d66bd0107d857c074ccb83dd0d14
                  • MD5 SHA1 SHA512 SSDEEP

                  ECC6.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\ECC6.exe
                  • Size 1.3MB
                  • SHA256 454360fe35928d10305c303b6876205149f6d66bd0107d857c074ccb83dd0d14
                  • MD5 SHA1 SHA512 SSDEEP

                  Wffwew.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\Wffwew.tmp
                  • Size 3.5MB
                  • SHA256 bcdf4c540c4289f81c98448d0a4482a96522fb767ab6015e76288afce148226a
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/1212-132-0x000000000093B000-0x0000000000950000-memory.dmp

                  memory/1212-133-0x00000000008D0000-0x00000000008D9000-memory.dmp

                  memory/1212-135-0x0000000000400000-0x000000000084B000-memory.dmp

                  memory/1212-134-0x0000000000400000-0x000000000084B000-memory.dmp

                  memory/3676-148-0x0000000000710000-0x0000000000714000-memory.dmp

                  memory/3676-147-0x0000000000710000-0x0000000000714000-memory.dmp

                  memory/3676-146-0x0000000000700000-0x0000000000704000-memory.dmp

                  memory/3676-145-0x00000000006F0000-0x00000000006F4000-memory.dmp

                  memory/4628-166-0x00000000039E0000-0x0000000003B20000-memory.dmp

                  memory/4628-168-0x00000000039E0000-0x0000000003B20000-memory.dmp

                  memory/4628-167-0x00000000039E0000-0x0000000003B20000-memory.dmp

                  memory/4628-170-0x0000000002CF0000-0x0000000003850000-memory.dmp

                  memory/4628-164-0x0000000002CF0000-0x0000000003850000-memory.dmp

                  memory/4628-169-0x00000000039E0000-0x0000000003B20000-memory.dmp

                  memory/4628-165-0x0000000002CF0000-0x0000000003850000-memory.dmp

                  memory/4628-163-0x0000000000A40000-0x0000000001480000-memory.dmp

                  memory/4984-142-0x0000000000400000-0x0000000000958000-memory.dmp

                  memory/4984-154-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-155-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-156-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-157-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-158-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-159-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-160-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-161-0x0000000003ED0000-0x0000000004010000-memory.dmp

                  memory/4984-153-0x0000000003370000-0x0000000003ED0000-memory.dmp

                  memory/4984-152-0x0000000003370000-0x0000000003ED0000-memory.dmp

                  memory/4984-151-0x0000000003370000-0x0000000003ED0000-memory.dmp

                  memory/4984-149-0x0000000000400000-0x0000000000958000-memory.dmp

                  memory/4984-143-0x0000000000400000-0x0000000000958000-memory.dmp

                  memory/4984-141-0x0000000002880000-0x0000000002B4C000-memory.dmp

                  memory/4984-140-0x000000000275B000-0x000000000287D000-memory.dmp

                  memory/4984-139-0x0000000000400000-0x0000000000958000-memory.dmp

                  memory/4984-171-0x0000000000400000-0x0000000000958000-memory.dmp

                  memory/4984-172-0x0000000003370000-0x0000000003ED0000-memory.dmp