Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2022, 12:35

General

  • Target
    ffd4eb84d30487daae13452db290c8a31332a93e818fa88cdc2f8041fd035c57.exe
  • Size 17KB
  • Sample221109-psby6aadhj
  • SHA256 ffd4eb84d30487daae13452db290c8a31332a93e818fa88cdc2f8041fd035c57
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Botnet
  • Default

C2
  • 127.0.0.1:6606

  • 127.0.0.1:7707

  • 127.0.0.1:8808

  • https://api.telegram.org/bot5733301341:AAF6S_qPXNWS0WW5VbV6kBv7HBzZIREbZ_g/sendMessage?chat_id=1071532135

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 6 IoCs
  • Async RAT payload 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 9 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • VMProtect packed file 2 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Checks computer location settings 2 TTPs 7 IoCs

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

  • Drops startup file 14 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 7 IoCs
  • Drops desktop.ini file(s) 9 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Drops file in System32 directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 52 IoCs
  • Suspicious use of AdjustPrivilegeToken 54 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ffd4eb84d30487daae13452db290c8a31332a93e818fa88cdc2f8041fd035c57.exe
    "C:\Users\Admin\AppData\Local\Temp\ffd4eb84d30487daae13452db290c8a31332a93e818fa88cdc2f8041fd035c57.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
      "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3680
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Flood http.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Flood http.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Drops startup file
        • Suspicious use of WriteProcessMemory
        PID:4992
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Drops startup file
          • Suspicious use of WriteProcessMemory
          PID:2376
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.bat" "
            5⤵
              PID:4364
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\http.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\http.exe"
            4⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of WriteProcessMemory
            PID:2784
            • C:\ProgramData\Synaptics\2.exe
              "C:\ProgramData\Synaptics\2.exe"
              5⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Suspicious use of WriteProcessMemory
              PID:4208
              • C:\Users\Admin\AppData\Roaming\Synaptics.exe
                "C:\Users\Admin\AppData\Roaming\Synaptics.exe"
                6⤵
                • Executes dropped EXE
                • Drops startup file
                • Adds Run key to start application
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2292
                • C:\Windows\SYSTEM32\netsh.exe
                  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Synaptics.exe" "Synaptics.exe" ENABLE
                  7⤵
                  • Modifies Windows Firewall
                  PID:4888
            • C:\ProgramData\Synaptics\LOIC.exe
              "C:\ProgramData\Synaptics\LOIC.exe"
              5⤵
              • Executes dropped EXE
              PID:3136
        • C:\Windows\SysWOW64\StormKittyBuild.exe
          "C:\Windows\system32\StormKittyBuild.exe"
          3⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Accesses Microsoft Outlook profiles
          • Drops file in System32 directory
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • outlook_office_path
          • outlook_win_path
          PID:2716
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:540
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:2276
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show profile
                5⤵
                  PID:4308
                • C:\Windows\SysWOW64\findstr.exe
                  findstr All
                  5⤵
                    PID:4356
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
                  4⤵
                    PID:548
                    • C:\Windows\SysWOW64\chcp.com
                      chcp 65001
                      5⤵
                        PID:2404
                      • C:\Windows\SysWOW64\netsh.exe
                        netsh wlan show networks mode=bssid
                        5⤵
                          PID:4532
                      • C:\Windows\System32\cmd.exe
                        "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpD60A.tmp.bat
                        4⤵
                          PID:4420
                          • C:\Windows\system32\chcp.com
                            chcp 65001
                            5⤵
                              PID:444
                            • C:\Windows\system32\taskkill.exe
                              TaskKill /F /IM 2716
                              5⤵
                              • Kills process with taskkill
                              • Suspicious use of AdjustPrivilegeToken
                              PID:3776
                            • C:\Windows\system32\timeout.exe
                              Timeout /T 2 /Nobreak
                              5⤵
                              • Delays execution with timeout.exe
                              PID:4600
                        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WorldWindClient.exe
                          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WorldWindClient.exe"
                          3⤵
                          • Executes dropped EXE
                          • Drops desktop.ini file(s)
                          • Checks processor information in registry
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          PID:4844
                          • C:\Windows\SysWOW64\cmd.exe
                            "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
                            4⤵
                            • Suspicious use of WriteProcessMemory
                            PID:3000
                            • C:\Windows\SysWOW64\chcp.com
                              chcp 65001
                              5⤵
                                PID:2204
                              • C:\Windows\SysWOW64\netsh.exe
                                netsh wlan show profile
                                5⤵
                                  PID:1584
                                • C:\Windows\SysWOW64\findstr.exe
                                  findstr All
                                  5⤵
                                    PID:452
                                • C:\Windows\SysWOW64\cmd.exe
                                  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
                                  4⤵
                                  • Suspicious use of WriteProcessMemory
                                  PID:2952
                                  • C:\Windows\SysWOW64\chcp.com
                                    chcp 65001
                                    5⤵
                                      PID:3840
                                    • C:\Windows\SysWOW64\netsh.exe
                                      netsh wlan show networks mode=bssid
                                      5⤵
                                        PID:5108
                              • C:\Windows\system32\msiexec.exe
                                C:\Windows\system32\msiexec.exe /V
                                1⤵
                                • Suspicious use of AdjustPrivilegeToken
                                PID:1096

                              Network

                                    MITRE ATT&CK Enterprise v6

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    2.exe

                                    • Path C:\ProgramData\Synaptics\2.exe
                                    • Size 71KB
                                    • SHA256 01de109e43797dc6dfe00f67624fa30de1e55b2b1bfb677ac130680330a7d8e5
                                    • MD5 SHA1 SHA512 SSDEEP

                                    2.exe

                                    • Path C:\ProgramData\Synaptics\2.exe
                                    • Size 71KB
                                    • SHA256 01de109e43797dc6dfe00f67624fa30de1e55b2b1bfb677ac130680330a7d8e5
                                    • MD5 SHA1 SHA512 SSDEEP

                                    LOIC.exe

                                    • Path C:\ProgramData\Synaptics\LOIC.exe
                                    • Size 238KB
                                    • SHA256 be3db90fc447ea9ff809c6b1fa764547cb571839a7c145ada9f6b80cf0454538
                                    • MD5 SHA1 SHA512 SSDEEP

                                    LOIC.exe

                                    • Path C:\ProgramData\Synaptics\LOIC.exe
                                    • Size 238KB
                                    • SHA256 be3db90fc447ea9ff809c6b1fa764547cb571839a7c145ada9f6b80cf0454538
                                    • MD5 SHA1 SHA512 SSDEEP

                                    RegAsm.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
                                    • Size 1.1MB
                                    • SHA256 721deeddd57e11fb7d7ae4acef3737f6c482803febf84d4189ed6fc460c923a4
                                    • MD5 SHA1 SHA512 SSDEEP

                                    RegAsm.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
                                    • Size 1.1MB
                                    • SHA256 721deeddd57e11fb7d7ae4acef3737f6c482803febf84d4189ed6fc460c923a4
                                    • MD5 SHA1 SHA512 SSDEEP

                                    tmpD60A.tmp.bat

                                    • Path C:\Users\Admin\AppData\Local\Temp\tmpD60A.tmp.bat
                                    • Size 202B
                                    • SHA256 b6e7a3de81498c1dc8bc7d9adce13062ba22efcfe1a6687387d6292dfd496cb5
                                    • MD5 SHA1 SHA512

                                    1.bat

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.bat
                                    • Size 42B
                                    • SHA256 949d5e216f4e6efa124ab5c84537e85f901756b18e8af4fd96bbc949a528480c
                                    • MD5 SHA1 SHA512

                                    1.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.exe
                                    • Size 310KB
                                    • SHA256 c5d7b73005a23bece094191672e0601437434952e1354cd3866bbb0f6e039973
                                    • MD5 SHA1 SHA512 SSDEEP

                                    1.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.exe
                                    • Size 310KB
                                    • SHA256 c5d7b73005a23bece094191672e0601437434952e1354cd3866bbb0f6e039973
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Flood http.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Flood http.exe
                                    • Size 765KB
                                    • SHA256 89ff3b4684a524868779ebf7ba551eb697245d2fdcde09d37e5f964533d7fcce
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Flood http.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Flood http.exe
                                    • Size 765KB
                                    • SHA256 89ff3b4684a524868779ebf7ba551eb697245d2fdcde09d37e5f964533d7fcce
                                    • MD5 SHA1 SHA512 SSDEEP

                                    WorldWindClient.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WorldWindClient.exe
                                    • Size 170KB
                                    • SHA256 e6ed27b49434df1a90585bceb02ce9386ebda400bbf2647fc335641b48332600
                                    • MD5 SHA1 SHA512 SSDEEP

                                    WorldWindClient.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WorldWindClient.exe
                                    • Size 170KB
                                    • SHA256 e6ed27b49434df1a90585bceb02ce9386ebda400bbf2647fc335641b48332600
                                    • MD5 SHA1 SHA512 SSDEEP

                                    http.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\http.exe
                                    • Size 469KB
                                    • SHA256 59af5b6ab7c95657e256926fa80f3de9bdaebf3a888838590f770e6000b67490
                                    • MD5 SHA1 SHA512 SSDEEP

                                    http.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\http.exe
                                    • Size 469KB
                                    • SHA256 59af5b6ab7c95657e256926fa80f3de9bdaebf3a888838590f770e6000b67490
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Synaptics.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Synaptics.exe
                                    • Size 71KB
                                    • SHA256 01de109e43797dc6dfe00f67624fa30de1e55b2b1bfb677ac130680330a7d8e5
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Synaptics.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Synaptics.exe
                                    • Size 71KB
                                    • SHA256 01de109e43797dc6dfe00f67624fa30de1e55b2b1bfb677ac130680330a7d8e5
                                    • MD5 SHA1 SHA512 SSDEEP

                                    AnonFileApi.dll

                                    • Path C:\Windows\SysWOW64\AnonFileApi.dll
                                    • Size 293KB
                                    • SHA256 75db945388f62f2de3d3eaae911f49495f289244e2fec9b25455c2d686989f69
                                    • MD5 SHA1 SHA512 SSDEEP

                                    DotNetZip.dll

                                    • Path C:\Windows\SysWOW64\DotNetZip.dll
                                    • Size 448KB
                                    • SHA256 00da1597d92235d3f84da979e2fa5dbf049bafb52c33bd6fc8ee7b29570c124c
                                    • MD5 SHA1 SHA512 SSDEEP

                                    StormKittyBuild.exe

                                    • Path C:\Windows\SysWOW64\StormKittyBuild.exe
                                    • Size 309KB
                                    • SHA256 3aac01a9606376d386e6b91e5ec5cc147ee07dbea224834a24135e440de53cab
                                    • MD5 SHA1 SHA512 SSDEEP

                                    StormKittyBuild.exe

                                    • Path C:\Windows\SysWOW64\StormKittyBuild.exe
                                    • Size 309KB
                                    • SHA256 3aac01a9606376d386e6b91e5ec5cc147ee07dbea224834a24135e440de53cab
                                    • MD5 SHA1 SHA512 SSDEEP

                                    memory/2236-137-0x00007FF984A20000-0x00007FF9854E1000-memory.dmp

                                    memory/2236-132-0x0000000000F20000-0x0000000000F26000-memory.dmp

                                    memory/2236-133-0x00007FF984A20000-0x00007FF9854E1000-memory.dmp

                                    memory/2292-172-0x00007FF97ACE0000-0x00007FF97B716000-memory.dmp

                                    memory/2716-192-0x000000001CB70000-0x000000001CBF4000-memory.dmp

                                    memory/2716-148-0x00007FF984970000-0x00007FF985431000-memory.dmp

                                    memory/2716-198-0x00007FF984970000-0x00007FF985431000-memory.dmp

                                    memory/2716-144-0x0000000000E00000-0x0000000000E50000-memory.dmp

                                    memory/2716-167-0x00007FF984970000-0x00007FF985431000-memory.dmp

                                    memory/2716-191-0x000000001CA60000-0x000000001CAD6000-memory.dmp

                                    memory/3136-171-0x000000006F4C0000-0x000000006FA71000-memory.dmp

                                    memory/3136-164-0x000000006F4C0000-0x000000006FA71000-memory.dmp

                                    memory/4208-165-0x00007FF97ACE0000-0x00007FF97B716000-memory.dmp

                                    memory/4844-174-0x00000000058E0000-0x0000000005972000-memory.dmp

                                    memory/4844-166-0x0000000004A90000-0x0000000004AF6000-memory.dmp

                                    memory/4844-175-0x0000000005F30000-0x00000000064D4000-memory.dmp

                                    memory/4844-183-0x0000000005A00000-0x0000000005A0A000-memory.dmp

                                    memory/4844-150-0x0000000000140000-0x0000000000170000-memory.dmp