Analysis

  • max time kernel
    122s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    18-09-2023 08:45

General

  • Target

    Mhd Order REF_PO 20230918.rtf

  • Size

    92KB

  • MD5

    87dc64cd0d2d13f4897619c008540bcb

  • SHA1

    7f191350095893ebc3e1aa0e9e79dc083961e697

  • SHA256

    aee43496026aadd3bb0884c7fcd200758fde8c35940f0745628f4a0f480923c0

  • SHA512

    09e5d4f84ee2da4306cd4ddc97bebec6071b075e236ef861149daf30ae156d7e0b6f6882926eb7e0f841988424e07d283f505d9de4d91955e1f305961b05b755

  • SSDEEP

    768:ewAbZSibMX9gRWjFrOxpo0gcdOSY04ttpVtocQWILLIYGYsTqcmtDU9YHL:ewAlRQKxmidnY04ttpXoeyhGYsVmtYUL

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

STRIGIO

C2

sandshoe.myfirewall.org:5344

Mutex

I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • XpertRAT

    XpertRAT is a remote access trojan with various capabilities.

  • XpertRAT Core payload 1 IoCs
  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 3 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 2 IoCs

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

  • Windows security modification 2 TTPs 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 10 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Mhd Order REF_PO 20230918.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1916
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2728
      • C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
        "C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2932
        • C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
          "C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe"
          3⤵
          • UAC bypass
          • Windows security bypass
          • Executes dropped EXE
          • Windows security modification
          • Checks whether UAC is enabled
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:2880
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
            4⤵
              PID:1732
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
              4⤵
                PID:1828
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                4⤵
                • Adds policy Run key to start application
                • Adds Run key to start application
                • Suspicious use of SetThreadContext
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:1080
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp0.txt"
                  5⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1516
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp1.txt"
                  5⤵
                  • Accesses Microsoft Outlook accounts
                  PID:2704
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp2.txt"
                  5⤵
                    PID:1020
                  • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                    /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp2.txt"
                    5⤵
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2328
                  • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                    /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp3.txt"
                    5⤵
                      PID:2204
                    • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                      /stext "C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp4.txt"
                      5⤵
                        PID:112

              Network

              MITRE ATT&CK Matrix ATT&CK v13

              Execution

              Exploitation for Client Execution

              1
              T1203

              Persistence

              Boot or Logon Autostart Execution

              2
              T1547

              Registry Run Keys / Startup Folder

              2
              T1547.001

              Privilege Escalation

              Abuse Elevation Control Mechanism

              1
              T1548

              Bypass User Account Control

              1
              T1548.002

              Boot or Logon Autostart Execution

              2
              T1547

              Registry Run Keys / Startup Folder

              2
              T1547.001

              Defense Evasion

              Abuse Elevation Control Mechanism

              1
              T1548

              Bypass User Account Control

              1
              T1548.002

              Impair Defenses

              3
              T1562

              Disable or Modify Tools

              3
              T1562.001

              Modify Registry

              7
              T1112

              Discovery

              System Information Discovery

              1
              T1082

              Collection

              Email Collection

              1
              T1114

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp2.txt
                Filesize

                2B

                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp2.txt
                Filesize

                2B

                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • C:\Users\Admin\AppData\Roaming\I8N3F0X7-G4E2-P2S0-T0D7-R1N2H5T660I4\ttuvyzcnp4.txt
                Filesize

                2B

                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
                Filesize

                20KB

                MD5

                8f9afff8be144adab202eef57b877a7a

                SHA1

                d0bc536cde574eda691eb092891b930affe76a92

                SHA256

                dd766c332849d0341f16d2c10b3388b9dd91bf62f2ea47e44a760e4dfb79c74a

                SHA512

                e6327eb303b21e4dc3d62ffc282523e214877985e8ab988576e6d1ba1baba14f0ce7b35082850632a171cc224d96578da1d1df8af7ad2a4305501f97eef2a700

              • C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                Filesize

                604KB

                MD5

                cb1ccbc5c88657e1f63a2cd3b1c240b6

                SHA1

                f237f76e21cbe5edf11a33ba05265df25c665050

                SHA256

                be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

                SHA512

                0a08c6bb26268d1a902c9bbb28a583e364e565d745fa83a4bc3ef2d4ecd237a049f192467476bb0fd0f0c14addc8be4412481f8cb8e6a1a6dcec36d600d46298

              • C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                Filesize

                604KB

                MD5

                cb1ccbc5c88657e1f63a2cd3b1c240b6

                SHA1

                f237f76e21cbe5edf11a33ba05265df25c665050

                SHA256

                be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

                SHA512

                0a08c6bb26268d1a902c9bbb28a583e364e565d745fa83a4bc3ef2d4ecd237a049f192467476bb0fd0f0c14addc8be4412481f8cb8e6a1a6dcec36d600d46298

              • C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                Filesize

                604KB

                MD5

                cb1ccbc5c88657e1f63a2cd3b1c240b6

                SHA1

                f237f76e21cbe5edf11a33ba05265df25c665050

                SHA256

                be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

                SHA512

                0a08c6bb26268d1a902c9bbb28a583e364e565d745fa83a4bc3ef2d4ecd237a049f192467476bb0fd0f0c14addc8be4412481f8cb8e6a1a6dcec36d600d46298

              • C:\Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                Filesize

                604KB

                MD5

                cb1ccbc5c88657e1f63a2cd3b1c240b6

                SHA1

                f237f76e21cbe5edf11a33ba05265df25c665050

                SHA256

                be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

                SHA512

                0a08c6bb26268d1a902c9bbb28a583e364e565d745fa83a4bc3ef2d4ecd237a049f192467476bb0fd0f0c14addc8be4412481f8cb8e6a1a6dcec36d600d46298

              • \Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                Filesize

                604KB

                MD5

                cb1ccbc5c88657e1f63a2cd3b1c240b6

                SHA1

                f237f76e21cbe5edf11a33ba05265df25c665050

                SHA256

                be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

                SHA512

                0a08c6bb26268d1a902c9bbb28a583e364e565d745fa83a4bc3ef2d4ecd237a049f192467476bb0fd0f0c14addc8be4412481f8cb8e6a1a6dcec36d600d46298

              • \Users\Admin\AppData\Roaming\sandshoebnf5783.exe
                Filesize

                604KB

                MD5

                cb1ccbc5c88657e1f63a2cd3b1c240b6

                SHA1

                f237f76e21cbe5edf11a33ba05265df25c665050

                SHA256

                be15093a407e5b70f5539df5eb1c18d0aedee626f6dc7e9db262c29bfe39ba3c

                SHA512

                0a08c6bb26268d1a902c9bbb28a583e364e565d745fa83a4bc3ef2d4ecd237a049f192467476bb0fd0f0c14addc8be4412481f8cb8e6a1a6dcec36d600d46298

              • memory/112-73-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

              • memory/1080-49-0x0000000000400000-0x0000000000443000-memory.dmp
                Filesize

                268KB

              • memory/1516-60-0x0000000000400000-0x0000000000426000-memory.dmp
                Filesize

                152KB

              • memory/2204-72-0x0000000000400000-0x0000000000416000-memory.dmp
                Filesize

                88KB

              • memory/2216-26-0x0000000070DCD000-0x0000000070DD8000-memory.dmp
                Filesize

                44KB

              • memory/2216-2-0x0000000070DCD000-0x0000000070DD8000-memory.dmp
                Filesize

                44KB

              • memory/2216-1-0x000000005FFF0000-0x0000000060000000-memory.dmp
                Filesize

                64KB

              • memory/2216-0-0x000000002FC01000-0x000000002FC02000-memory.dmp
                Filesize

                4KB

              • memory/2216-93-0x000000005FFF0000-0x0000000060000000-memory.dmp
                Filesize

                64KB

              • memory/2216-94-0x0000000070DCD000-0x0000000070DD8000-memory.dmp
                Filesize

                44KB

              • memory/2328-66-0x0000000000400000-0x0000000000459000-memory.dmp
                Filesize

                356KB

              • memory/2704-61-0x0000000000400000-0x000000000041B000-memory.dmp
                Filesize

                108KB

              • memory/2880-34-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/2880-32-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/2880-40-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/2880-56-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/2880-38-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
                Filesize

                4KB

              • memory/2880-36-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/2932-31-0x0000000004810000-0x000000000487C000-memory.dmp
                Filesize

                432KB

              • memory/2932-45-0x000000006AF40000-0x000000006B62E000-memory.dmp
                Filesize

                6.9MB

              • memory/2932-30-0x00000000003D0000-0x00000000003DA000-memory.dmp
                Filesize

                40KB

              • memory/2932-28-0x0000000000390000-0x00000000003D0000-memory.dmp
                Filesize

                256KB

              • memory/2932-27-0x000000006AF40000-0x000000006B62E000-memory.dmp
                Filesize

                6.9MB

              • memory/2932-25-0x0000000000370000-0x0000000000388000-memory.dmp
                Filesize

                96KB

              • memory/2932-24-0x0000000000390000-0x00000000003D0000-memory.dmp
                Filesize

                256KB

              • memory/2932-19-0x000000006AF40000-0x000000006B62E000-memory.dmp
                Filesize

                6.9MB

              • memory/2932-18-0x0000000010E10000-0x0000000010EAA000-memory.dmp
                Filesize

                616KB