Analysis

  • max time kernel
    74s
  • max time network
    140s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • 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
  • Program crash 3 IoCs
  • Suspicious use of SetThreadContext 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 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:3916
    • 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:3276
      • 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:3912
        • 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:3840
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx0.txt"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2500
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx1.txt"
            5⤵
              PID:2512
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx2.txt"
              5⤵
                PID:2744
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 92
                  6⤵
                  • Program crash
                  PID:2504
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx2.txt"
                5⤵
                  PID:3492
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 3492 -s 92
                    6⤵
                    • Program crash
                    PID:1896
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx2.txt"
                  5⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1504
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx3.txt"
                  5⤵
                    PID:2704
                  • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                    /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx4.txt"
                    5⤵
                      PID:3196
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 92
                        6⤵
                        • Program crash
                        PID:3660
                    • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                      /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx4.txt"
                      5⤵
                        PID:2312

              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\Local\Microsoft\CLR_v4.0_32\UsageLogs\9b0315924b8b25d861199d276becfd34.exe.log
                MD5

                c3cc52ccca9ff2b6fa8d267fc350ca6b

                SHA1

                a68d4028333296d222e4afd75dea36fdc98d05f3

                SHA256

                3125b6071e2d78f575a06ed7ac32a83d9262ae64d1fa81ac43e8bfc1ef157c0e

                SHA512

                b0c7b2501b1a2c559795a9d178c0bbda0e03cbdbaaa2c4330ac1202a55373fe1b742078adcfa915bd6e805565a2daa6d35d64ef7a14ffcd09069f9ea6a691cc7

              • C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx2.txt
                MD5

                f94dc819ca773f1e3cb27abbc9e7fa27

                SHA1

                9a7700efadc5ea09ab288544ef1e3cd876255086

                SHA256

                a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

                SHA512

                72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

              • C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\woxgswubx4.txt
                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • memory/1504-162-0x0000000000400000-0x0000000000459000-memory.dmp
                Filesize

                356KB

              • memory/1504-163-0x0000000000442F04-mapping.dmp
              • memory/2312-174-0x000000000040C2A8-mapping.dmp
              • memory/2312-173-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

              • memory/2500-151-0x0000000000423BC0-mapping.dmp
              • memory/2500-150-0x0000000000400000-0x0000000000426000-memory.dmp
                Filesize

                152KB

              • memory/2512-155-0x0000000000411654-mapping.dmp
              • memory/2512-154-0x0000000000400000-0x000000000041B000-memory.dmp
                Filesize

                108KB

              • memory/2704-168-0x0000000000413750-mapping.dmp
              • memory/2704-167-0x0000000000400000-0x0000000000416000-memory.dmp
                Filesize

                88KB

              • memory/2744-159-0x0000000000442F04-mapping.dmp
              • memory/3196-172-0x000000000040C2A8-mapping.dmp
              • memory/3276-134-0x00000000056C0000-0x00000000056C1000-memory.dmp
                Filesize

                4KB

              • memory/3276-135-0x0000000009810000-0x000000000988D000-memory.dmp
                Filesize

                500KB

              • memory/3276-136-0x000000000C050000-0x000000000C07E000-memory.dmp
                Filesize

                184KB

              • memory/3276-125-0x000000000047746E-mapping.dmp
              • memory/3276-124-0x0000000000400000-0x000000000047C000-memory.dmp
                Filesize

                496KB

              • memory/3492-161-0x0000000000442F04-mapping.dmp
              • memory/3840-146-0x0000000000971000-0x0000000000A6D000-memory.dmp
                Filesize

                1008KB

              • memory/3840-145-0x0000000000970000-0x0000000000AC3000-memory.dmp
                Filesize

                1.3MB

              • memory/3840-142-0x0000000000401364-mapping.dmp
              • memory/3840-141-0x0000000000400000-0x0000000000443000-memory.dmp
                Filesize

                268KB

              • memory/3912-137-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/3912-138-0x00000000004010B8-mapping.dmp
              • memory/3912-149-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/3916-123-0x000000000B3C0000-0x000000000B43A000-memory.dmp
                Filesize

                488KB

              • memory/3916-114-0x0000000000940000-0x0000000000941000-memory.dmp
                Filesize

                4KB

              • memory/3916-122-0x0000000008BC0000-0x0000000008C80000-memory.dmp
                Filesize

                768KB

              • memory/3916-121-0x0000000006D30000-0x0000000006D32000-memory.dmp
                Filesize

                8KB

              • memory/3916-120-0x0000000005230000-0x000000000572E000-memory.dmp
                Filesize

                5.0MB

              • memory/3916-119-0x00000000052B0000-0x00000000052B1000-memory.dmp
                Filesize

                4KB

              • memory/3916-118-0x0000000005370000-0x0000000005371000-memory.dmp
                Filesize

                4KB

              • memory/3916-117-0x00000000052D0000-0x00000000052D1000-memory.dmp
                Filesize

                4KB

              • memory/3916-116-0x0000000005730000-0x0000000005731000-memory.dmp
                Filesize

                4KB