Analysis

  • max time kernel
    0s
  • max time network
    3s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/04/2024, 04:24

General

  • Target
    Reaper.exe
  • Size 8.4MB
  • Sample240427-e1p6msah63
  • SHA256 a8e3cbf1921a2485a307ac0ff2536accc77bc17db386a00e8d67c5537613b321
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • L838 RAT v1.0.0

Botnet
  • Default

C2
  • 127.0.0.1:54984

  • 127.0.0.1:4449

  • l838.ddns.net:54984

  • l838.ddns.net:4449

Mutex
  • azjrpxchkiev

Attributes
  • delay

    1

  • install

    true

  • install_file

    Windows Driver Foundation.exe

  • install_folder

    %Temp%

aes.plain

Extracted

Family
  • xworm

C2
  • l838.ddns.net:3232

Attributes
  • Install_directory

    %Public%

  • install_file

    Windows Service Wrapper.exe

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Async RAT payload 1 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Reaper.exe
    "C:\Users\Admin\AppData\Local\Temp\Reaper.exe"
    1⤵
      PID:2396
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHQAbgBtACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHIAdgBsACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHoAagBuACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGYAYwBlACMAPgA="
        2⤵
          PID:928
        • C:\Users\Admin\AppData\Local\Temp\Reaper.exe
          "C:\Users\Admin\AppData\Local\Temp\Reaper.exe"
          2⤵
            PID:2944
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHQAbgBtACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHIAdgBsACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHoAagBuACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGYAYwBlACMAPgA="
              3⤵
                PID:3432
              • C:\Users\Admin\AppData\Local\Temp\Reaper.exe
                "C:\Users\Admin\AppData\Local\Temp\Reaper.exe"
                3⤵
                  PID:4880
                  • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHQAbgBtACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHIAdgBsACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHoAagBuACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGYAYwBlACMAPgA="
                    4⤵
                      PID:3168
                    • C:\Users\Admin\AppData\Local\Temp\Reaper.exe
                      "C:\Users\Admin\AppData\Local\Temp\Reaper.exe"
                      4⤵
                        PID:4624
                      • C:\Users\Admin\Windows Driver Foundation.exe
                        "C:\Users\Admin\Windows Driver Foundation.exe"
                        4⤵
                          PID:616
                        • C:\Users\Admin\Windows Service Wrapper.exe
                          "C:\Users\Admin\Windows Service Wrapper.exe"
                          4⤵
                            PID:2356
                          • C:\Users\Admin\Windows SmartScreen.exe
                            "C:\Users\Admin\Windows SmartScreen.exe"
                            4⤵
                              PID:2104
                              • C:\Users\Admin\Windows SmartScreen.exe
                                "C:\Users\Admin\Windows SmartScreen.exe"
                                5⤵
                                  PID:2288
                            • C:\Users\Admin\Windows Driver Foundation.exe
                              "C:\Users\Admin\Windows Driver Foundation.exe"
                              3⤵
                                PID:4580
                              • C:\Users\Admin\Windows Service Wrapper.exe
                                "C:\Users\Admin\Windows Service Wrapper.exe"
                                3⤵
                                  PID:224
                                • C:\Users\Admin\Windows SmartScreen.exe
                                  "C:\Users\Admin\Windows SmartScreen.exe"
                                  3⤵
                                    PID:1092
                                    • C:\Users\Admin\Windows SmartScreen.exe
                                      "C:\Users\Admin\Windows SmartScreen.exe"
                                      4⤵
                                        PID:4672
                                  • C:\Users\Admin\Windows Driver Foundation.exe
                                    "C:\Users\Admin\Windows Driver Foundation.exe"
                                    2⤵
                                      PID:1756
                                    • C:\Users\Admin\Windows Service Wrapper.exe
                                      "C:\Users\Admin\Windows Service Wrapper.exe"
                                      2⤵
                                        PID:2156
                                      • C:\Users\Admin\Windows SmartScreen.exe
                                        "C:\Users\Admin\Windows SmartScreen.exe"
                                        2⤵
                                          PID:4868
                                          • C:\Users\Admin\Windows SmartScreen.exe
                                            "C:\Users\Admin\Windows SmartScreen.exe"
                                            3⤵
                                              PID:3308

                                        Network

                                              MITRE ATT&CK Matrix

                                              Replay Monitor

                                              Loading Replay Monitor...

                                              Downloads

                                              FastColoredTextBox.dll

                                              • Path C:\Users\Admin\AppData\Local\Temp\FastColoredTextBox.dll
                                              • Size 323KB
                                              • SHA256 ac926c92ccfc3789a5ae571cc4415eb1897d500a79604d8495241c19acdf01b9
                                              • MD5 SHA1 SHA512 SSDEEP

                                              _ctypes.pyd

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10922\_ctypes.pyd
                                              • Size 58KB
                                              • SHA256 64e8fd952ccf5b8adca80ce8c7bc6c96ec7df381789256fe8d326f111f02e95c
                                              • MD5 SHA1 SHA512 SSDEEP

                                              base_library.zip

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10922\base_library.zip
                                              • Size 1.8MB
                                              • SHA256 ff6a37c49ee4bb07a763866d4163126165038296c1fb7b730928297c25cfbe6d
                                              • MD5 SHA1 SHA512 SSDEEP

                                              blank.aes

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10922\blank.aes
                                              • Size 114KB
                                              • SHA256 b969a130e6769dac2c2bd5a2117fd9b93f2d32c3a1b23066c4921ac174fb692b
                                              • MD5 SHA1 SHA512 SSDEEP

                                              libffi-8.dll

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10922\libffi-8.dll
                                              • Size 29KB
                                              • SHA256 135c772b42ba6353757a4d076ce03dbf792456143b42d25a62066da46144fece
                                              • MD5 SHA1 SHA512 SSDEEP

                                              VCRUNTIME140.dll

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI48682\VCRUNTIME140.dll
                                              • Size 106KB
                                              • SHA256 a8f950b4357ec12cfccddc9094cca56a3d5244b95e09ea6e9a746489f2d58736
                                              • MD5 SHA1 SHA512 SSDEEP

                                              python311.dll

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI48682\python311.dll
                                              • Size 1.6MB
                                              • SHA256 7e1370058177d78a415b7ed113cc15472974440d84267fc44cdc5729535e3967
                                              • MD5 SHA1 SHA512 SSDEEP

                                              ucrtbase.dll

                                              • Path C:\Users\Admin\AppData\Local\Temp\_MEI48682\ucrtbase.dll
                                              • Size 1.1MB
                                              • SHA256 ed570898508c9d9186052157106b6dd9722bed47a27ecfeb424386c8970d81da
                                              • MD5 SHA1 SHA512 SSDEEP

                                              __PSScriptPolicyTest_korwori1.wsl.ps1

                                              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_korwori1.wsl.ps1
                                              • Size 60B
                                              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                                              • MD5 SHA1 SHA512

                                              DataLogs.conf

                                              • Path C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
                                              • Size 8B
                                              • SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
                                              • MD5 SHA1 SHA512

                                              Windows Driver Foundation.exe

                                              • Path C:\Users\Admin\Windows Driver Foundation.exe
                                              • Size 74KB
                                              • SHA256 c98143abbb039d75adadefe62be076f46158aa0940bc65aafacfd6f820e35f50
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows Service Wrapper.exe

                                              • Path C:\Users\Admin\Windows Service Wrapper.exe
                                              • Size 63KB
                                              • SHA256 d5bad2e5f00b8222e1ac18fdf3de1a2341e0c9aa6744c193cc559c3e8e9d918b
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 5.2MB
                                              • SHA256 f237912105a72054bc2d68ffb6d5721621177c913388968d22c73814e524df73
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 5.1MB
                                              • SHA256 83735135bbc0f6309d4a834793497461ce5f3d9b41535dfefa7f9cb0b1cbb658
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 4.7MB
                                              • SHA256 8963833e503fc32daee864ef5a08c2753c0ac6f742fb18123a3a61c1a14e2101
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 4.1MB
                                              • SHA256 feb2ec32d806af5ba2e422e916417a889217f44847aa69ac5fceec4f12a9bf8a
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 6.2MB
                                              • SHA256 441fe070db3aa327a5cac92ceb9b5d8dd35c83b61b45af2224ae632942aec4d1
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 7.9MB
                                              • SHA256 c728d0df78c2c46946c59843bd7154a4d43deb859d52356bc3f204e8b59fee59
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Windows SmartScreen.exe

                                              • Path C:\Users\Admin\Windows SmartScreen.exe
                                              • Size 6.4MB
                                              • SHA256 37b343a631f90eedf07121074c1d8bfaf516447cf56b302ad57df0245fb8ad87
                                              • MD5 SHA1 SHA512 SSDEEP

                                              memory/928-240-0x0000000005DF0000-0x0000000006144000-memory.dmp

                                              memory/928-226-0x0000000005620000-0x0000000005642000-memory.dmp

                                              memory/928-227-0x0000000005D10000-0x0000000005D76000-memory.dmp

                                              memory/928-228-0x0000000005D80000-0x0000000005DE6000-memory.dmp

                                              memory/928-89-0x0000000004F60000-0x0000000004F96000-memory.dmp

                                              memory/928-148-0x00000000056E0000-0x0000000005D08000-memory.dmp

                                              memory/1756-56-0x0000000000350000-0x0000000000368000-memory.dmp

                                              memory/1756-64-0x00007FFDDC150000-0x00007FFDDCC11000-memory.dmp

                                              memory/2156-65-0x0000000000800000-0x0000000000816000-memory.dmp

                                              memory/3308-234-0x00007FFDD6FB0000-0x00007FFDD7599000-memory.dmp

                                              memory/3308-251-0x00007FFDEFE90000-0x00007FFDEFE9F000-memory.dmp

                                              memory/3308-252-0x00007FFDEBB30000-0x00007FFDEBB53000-memory.dmp

                                              memory/4672-269-0x00007FFDEED30000-0x00007FFDEED3F000-memory.dmp

                                              memory/4672-250-0x00007FFDD68A0000-0x00007FFDD6E89000-memory.dmp

                                              memory/4672-268-0x00007FFDEBA20000-0x00007FFDEBA43000-memory.dmp