Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    02-12-2021 11:58

General

  • Target

    test/fe9d72dd4b046bafdd144902ab570297629f83d06afb5a9ba7703382a29d588f.exe

  • Size

    3.6MB

  • MD5

    743a6891999db5d7179091aba5f98fdb

  • SHA1

    eeca4b8f88fcae9db6f54304270699d459fb5722

  • SHA256

    fe9d72dd4b046bafdd144902ab570297629f83d06afb5a9ba7703382a29d588f

  • SHA512

    9edef033663c828536190332ec87ac0096ffddae934d17c51b255a55ecb05774211a0edb1915c19384641befa291cfdfd2e3f878bf3b827f8b203ec1bee9dd96

Malware Config

Signatures

  • Ammyy Admin

    Remote admin tool with various capabilities.

  • AmmyyAdmin Payload 2 IoCs
  • FlawedAmmyy RAT

    Remote-access trojan based on leaked code for the Ammyy remote admin software.

  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 10 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer Automatic Crash Recovery 1 TTPs 1 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 59 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\test\fe9d72dd4b046bafdd144902ab570297629f83d06afb5a9ba7703382a29d588f.exe
    "C:\Users\Admin\AppData\Local\Temp\test\fe9d72dd4b046bafdd144902ab570297629f83d06afb5a9ba7703382a29d588f.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Modifies Internet Explorer Automatic Crash Recovery
    • Modifies Internet Explorer Protected Mode Banner
    • Modifies Internet Explorer settings
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Program Files (x86)\SinTech\TextEdit.exe
      "C:\Program Files (x86)\SinTech\TextEdit.exe"
      2⤵
      • Executes dropped EXE
      PID:3096
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c sc create Wlanspeed binpath= "C:\ProgramData\Wlanspeed\wlanspeed.exe -service" start= auto displayname= "Wlanspeed" & sc description Wlanspeed "Wlanspeed service" && netsh advfirewall firewall add rule name="Wlanspeed" dir=in action=allow profile=any description="Wlanspeed service" program="C:\programdata\Wlanspeed\wlanspeed.exe" && netsh advfirewall firewall add rule name="Wlanspeed" dir=out action=allow profile=any description="Wlanspeed service" program="C:\programdata\Wlanspeed\wlanspeed.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Windows\SysWOW64\sc.exe
        sc create Wlanspeed binpath= "C:\ProgramData\Wlanspeed\wlanspeed.exe -service" start= auto displayname= "Wlanspeed"
        3⤵
          PID:352
        • C:\Windows\SysWOW64\sc.exe
          sc description Wlanspeed "Wlanspeed service"
          3⤵
            PID:1192
          • C:\Windows\SysWOW64\netsh.exe
            netsh advfirewall firewall add rule name="Wlanspeed" dir=in action=allow profile=any description="Wlanspeed service" program="C:\programdata\Wlanspeed\wlanspeed.exe"
            3⤵
              PID:3348
            • C:\Windows\SysWOW64\netsh.exe
              netsh advfirewall firewall add rule name="Wlanspeed" dir=out action=allow profile=any description="Wlanspeed service" program="C:\programdata\Wlanspeed\wlanspeed.exe"
              3⤵
                PID:1768
            • C:\ProgramData\Wlanspeed\wlanspeed.exe
              "C:\ProgramData\Wlanspeed\wlanspeed.exe" -getid -nogui
              2⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • Suspicious use of SetWindowsHookEx
              PID:4076
            • C:\ProgramData\Wlanspeed\outst.exe
              "C:\ProgramData\Wlanspeed\outst.exe" -outid
              2⤵
              • Executes dropped EXE
              PID:2112
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
            1⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3444
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3444 CREDAT:82945 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2644
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3444 CREDAT:82947 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2040

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • memory/640-254-0x0000000000611000-0x0000000000615000-memory.dmp

            Filesize

            16KB

          • memory/3096-181-0x000000001E890000-0x000000001E891000-memory.dmp

            Filesize

            4KB

          • memory/3096-123-0x00000000000A0000-0x00000000000A1000-memory.dmp

            Filesize

            4KB

          • memory/3096-128-0x00000000007B0000-0x00000000007B1000-memory.dmp

            Filesize

            4KB

          • memory/3096-129-0x000000001AC10000-0x000000001AC12000-memory.dmp

            Filesize

            8KB

          • memory/3444-148-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-139-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-184-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-183-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-182-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-180-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-179-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-178-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-177-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-130-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-175-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-131-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-171-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-167-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-166-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-165-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-163-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-160-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-159-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-157-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-156-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-153-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-152-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-151-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-150-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-146-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-147-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-144-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-143-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-142-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-140-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-189-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-138-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-137-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-136-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-135-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-134-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-251-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/3444-132-0x00007FFD5D280000-0x00007FFD5D2EB000-memory.dmp

            Filesize

            428KB

          • memory/4076-176-0x000000007FAD0000-0x000000007FEA1000-memory.dmp

            Filesize

            3.8MB