Analysis

  • max time kernel
    47s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    21-04-2021 13:53

General

  • Target

    b6e19d6eff5e92815130648f931b9425.exe

  • Size

    822KB

  • MD5

    b6e19d6eff5e92815130648f931b9425

  • SHA1

    32af8fb009f92eec12ee99fd871c56e5fb497e6c

  • SHA256

    1bc32420315bf439659c6ca7426e068cb1acab9d5320006a40aeff025318893f

  • SHA512

    ad3430addf44ed7ea2295d8bb07018c2789e5f0f0a0bd3c0aacb69f5486f49a04c8003015d06ee9b68f7d8b141615af818cd3d1c17e8a8f8c08c87f225264665

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

special X

C2

ghytrty.duckdns.org:4145

spapertyy.duckdns.org:4145

Mutex

L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0

Signatures

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • 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
  • Program crash 8 IoCs
  • Suspicious use of SetThreadContext 14 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\b6e19d6eff5e92815130648f931b9425.exe
    "C:\Users\Admin\AppData\Local\Temp\b6e19d6eff5e92815130648f931b9425.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1000
    • C:\Users\Admin\AppData\Local\Temp\b6e19d6eff5e92815130648f931b9425.exe
      "{path}"
      2⤵
      • 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:3628
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\b6e19d6eff5e92815130648f931b9425.exe
        3⤵
        • 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:4056
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy0.txt"
          4⤵
            PID:2128
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 92
              5⤵
              • Program crash
              PID:3868
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy0.txt"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3924
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy1.txt"
            4⤵
              PID:2304
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy2.txt"
              4⤵
                PID:2648
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 92
                  5⤵
                  • Program crash
                  PID:3452
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy2.txt"
                4⤵
                  PID:800
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 800 -s 24
                    5⤵
                    • Program crash
                    PID:2172
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 800 -s 36
                    5⤵
                    • Suspicious use of NtCreateProcessExOtherParentProcess
                    • Program crash
                    PID:2508
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy2.txt"
                  4⤵
                    PID:648
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 92
                      5⤵
                      • Program crash
                      PID:3652
                  • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                    /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy2.txt"
                    4⤵
                      PID:696
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 696 -s 92
                        5⤵
                        • Program crash
                        PID:2348
                    • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                      /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy2.txt"
                      4⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2292
                    • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                      /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy3.txt"
                      4⤵
                        PID:2336
                      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                        /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy4.txt"
                        4⤵
                          PID:2608
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 92
                            5⤵
                            • Program crash
                            PID:3524
                        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                          /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy4.txt"
                          4⤵
                            PID:4052
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -u -p 4052 -s 92
                              5⤵
                              • Program crash
                              PID:1332
                          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                            /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy4.txt"
                            4⤵
                              PID:3604

                      Network

                      MITRE ATT&CK Matrix ATT&CK v6

                      Persistence

                      Registry Run Keys / Startup Folder

                      2
                      T1060

                      Privilege Escalation

                      Bypass User Account Control

                      1
                      T1088

                      Defense Evasion

                      Bypass User Account Control

                      1
                      T1088

                      Disabling Security Tools

                      3
                      T1089

                      Modify Registry

                      6
                      T1112

                      Discovery

                      System Information Discovery

                      1
                      T1082

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy2.txt
                        MD5

                        f94dc819ca773f1e3cb27abbc9e7fa27

                        SHA1

                        9a7700efadc5ea09ab288544ef1e3cd876255086

                        SHA256

                        a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

                        SHA512

                        72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

                      • C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\uayuyiyjy4.txt
                        MD5

                        f3b25701fe362ec84616a93a45ce9998

                        SHA1

                        d62636d8caec13f04e28442a0a6fa1afeb024bbb

                        SHA256

                        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                        SHA512

                        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                      • memory/648-152-0x0000000000442F04-mapping.dmp
                      • memory/696-154-0x0000000000442F04-mapping.dmp
                      • memory/800-150-0x0000000000442F04-mapping.dmp
                      • memory/1000-123-0x000000000B5C0000-0x000000000B637000-memory.dmp
                        Filesize

                        476KB

                      • memory/1000-121-0x0000000008C80000-0x0000000008C81000-memory.dmp
                        Filesize

                        4KB

                      • memory/1000-122-0x0000000008E00000-0x0000000008EC4000-memory.dmp
                        Filesize

                        784KB

                      • memory/1000-114-0x0000000000D50000-0x0000000000D51000-memory.dmp
                        Filesize

                        4KB

                      • memory/1000-116-0x0000000005CA0000-0x0000000005CA1000-memory.dmp
                        Filesize

                        4KB

                      • memory/1000-117-0x0000000005680000-0x0000000005681000-memory.dmp
                        Filesize

                        4KB

                      • memory/1000-118-0x00000000057A0000-0x0000000005C9E000-memory.dmp
                        Filesize

                        5.0MB

                      • memory/1000-119-0x0000000005660000-0x0000000005661000-memory.dmp
                        Filesize

                        4KB

                      • memory/1000-120-0x00000000058D0000-0x00000000058DE000-memory.dmp
                        Filesize

                        56KB

                      • memory/2128-138-0x0000000000423BC0-mapping.dmp
                      • memory/2292-156-0x0000000000442F04-mapping.dmp
                      • memory/2292-155-0x0000000000400000-0x0000000000459000-memory.dmp
                        Filesize

                        356KB

                      • memory/2304-144-0x0000000000411654-mapping.dmp
                      • memory/2304-143-0x0000000000400000-0x000000000041B000-memory.dmp
                        Filesize

                        108KB

                      • memory/2336-160-0x0000000000400000-0x0000000000416000-memory.dmp
                        Filesize

                        88KB

                      • memory/2336-161-0x0000000000413750-mapping.dmp
                      • memory/2608-165-0x000000000040C2A8-mapping.dmp
                      • memory/2648-148-0x0000000000442F04-mapping.dmp
                      • memory/3604-169-0x000000000040C2A8-mapping.dmp
                      • memory/3604-168-0x0000000000400000-0x0000000000415000-memory.dmp
                        Filesize

                        84KB

                      • memory/3628-136-0x0000000000400000-0x000000000042C000-memory.dmp
                        Filesize

                        176KB

                      • memory/3628-125-0x00000000004010B8-mapping.dmp
                      • memory/3628-124-0x0000000000400000-0x000000000042C000-memory.dmp
                        Filesize

                        176KB

                      • memory/3924-139-0x0000000000400000-0x0000000000426000-memory.dmp
                        Filesize

                        152KB

                      • memory/3924-140-0x0000000000423BC0-mapping.dmp
                      • memory/4052-167-0x000000000040C2A8-mapping.dmp
                      • memory/4056-128-0x0000000000400000-0x0000000000443000-memory.dmp
                        Filesize

                        268KB

                      • memory/4056-129-0x0000000000401364-mapping.dmp
                      • memory/4056-132-0x0000000003460000-0x00000000035B3000-memory.dmp
                        Filesize

                        1.3MB

                      • memory/4056-133-0x0000000003461000-0x000000000355D000-memory.dmp
                        Filesize

                        1008KB