Analysis

  • max time kernel
    86s
  • max time network
    196s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    29-06-2021 19:33

General

  • Target

    9b0315924b8b25d861199d276becfd34.exe

  • Size

    1.2MB

  • MD5

    9b0315924b8b25d861199d276becfd34

  • SHA1

    6f6dbce9332a844976698b75911c77afebb1543f

  • SHA256

    c109fdc9eebddd35215c226381a886b4f2fdec8956ac9cfc428cbb6ef3405777

  • SHA512

    b3528f7c4b0b3aa812e3b8113e7ee924f8ae34ab801c6a6cf20d56d30adba757f57041d8c6530cb6fc7c42a8b1894613ca54e0ceac0795e14dfa2a1e8ecf3d5d

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

special X

C2

mertrerfeyy.duckdns.org:8494

gwtruwhgw.duckdns.org:8494

dfgrttuutii.duckdns.org:8494

Mutex

J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4

Signatures

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

    XpertRAT is a remote access trojan with various capabilities.

  • XpertRAT Core Payload 2 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 2 IoCs

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

  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.exe
    "C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.exe
      "{path}"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1256
      • C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.exe
        "{path}"
        3⤵
        • 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:624
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.exe
          4⤵
            PID:2012
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.exe
            4⤵
              PID:928
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              C:\Users\Admin\AppData\Local\Temp\9b0315924b8b25d861199d276becfd34.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:1664
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza0.txt"
                5⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:1224
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza1.txt"
                5⤵
                  PID:1876
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza2.txt"
                  5⤵
                    PID:2004
                  • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                    /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza2.txt"
                    5⤵
                      PID:1396
                    • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza3.txt"
                      5⤵
                        PID:1708
                      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                        /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza4.txt"
                        5⤵
                          PID:944

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza2.txt

                  MD5

                  f3b25701fe362ec84616a93a45ce9998

                  SHA1

                  d62636d8caec13f04e28442a0a6fa1afeb024bbb

                  SHA256

                  b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                  SHA512

                  98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                • C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\vyvbrtvza4.txt

                  MD5

                  f3b25701fe362ec84616a93a45ce9998

                  SHA1

                  d62636d8caec13f04e28442a0a6fa1afeb024bbb

                  SHA256

                  b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                  SHA512

                  98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                • memory/624-73-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/624-74-0x00000000004010B8-mapping.dmp

                • memory/928-81-0x0000000000401364-mapping.dmp

                • memory/944-104-0x000000000040C2A8-mapping.dmp

                • memory/944-103-0x0000000000400000-0x0000000000415000-memory.dmp

                  Filesize

                  84KB

                • memory/1224-88-0x0000000000400000-0x0000000000426000-memory.dmp

                  Filesize

                  152KB

                • memory/1224-89-0x0000000000423BC0-mapping.dmp

                • memory/1256-66-0x000000000047746E-mapping.dmp

                • memory/1256-72-0x0000000000650000-0x000000000067E000-memory.dmp

                  Filesize

                  184KB

                • memory/1256-71-0x0000000006760000-0x00000000067DD000-memory.dmp

                  Filesize

                  500KB

                • memory/1256-69-0x0000000004CB0000-0x0000000004CB1000-memory.dmp

                  Filesize

                  4KB

                • memory/1256-67-0x0000000000400000-0x000000000047C000-memory.dmp

                  Filesize

                  496KB

                • memory/1256-65-0x0000000000400000-0x000000000047C000-memory.dmp

                  Filesize

                  496KB

                • memory/1396-96-0x0000000000400000-0x0000000000459000-memory.dmp

                  Filesize

                  356KB

                • memory/1396-97-0x0000000000442F04-mapping.dmp

                • memory/1664-84-0x0000000000450000-0x00000000005A3000-memory.dmp

                  Filesize

                  1.3MB

                • memory/1664-87-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

                  Filesize

                  8KB

                • memory/1664-82-0x0000000000400000-0x0000000000443000-memory.dmp

                  Filesize

                  268KB

                • memory/1664-83-0x0000000000401364-mapping.dmp

                • memory/1708-101-0x0000000000413750-mapping.dmp

                • memory/1708-100-0x0000000000400000-0x0000000000416000-memory.dmp

                  Filesize

                  88KB

                • memory/1876-91-0x0000000000400000-0x000000000041B000-memory.dmp

                  Filesize

                  108KB

                • memory/1876-92-0x0000000000411654-mapping.dmp

                • memory/1980-59-0x0000000000830000-0x0000000000831000-memory.dmp

                  Filesize

                  4KB

                • memory/1980-64-0x0000000004F20000-0x0000000004F9A000-memory.dmp

                  Filesize

                  488KB

                • memory/1980-63-0x0000000008120000-0x00000000081E0000-memory.dmp

                  Filesize

                  768KB

                • memory/1980-62-0x00000000002C0000-0x00000000002C2000-memory.dmp

                  Filesize

                  8KB

                • memory/1980-61-0x00000000004B0000-0x00000000004B1000-memory.dmp

                  Filesize

                  4KB

                • memory/2004-95-0x0000000000442F04-mapping.dmp

                • memory/2012-78-0x0000000000401364-mapping.dmp