Analysis

  • max time kernel
    42s
  • max time network
    143s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    26-06-2021 07:17

General

  • Target

    939a42faab70585cf4aed59c73425492.exe

  • Size

    472KB

  • MD5

    939a42faab70585cf4aed59c73425492

  • SHA1

    ccc57ed7de341f637e1ba6e671105ec304bd2c4b

  • SHA256

    06febadb1cc71ef3987c339b7c862ea4cd32656c372c4f266cd1af68c355a0c0

  • SHA512

    04a845f4b4db9f8fb923a10db65a1cac6cce46f52aa46eaa124b7aa710e7d063555e93f93e26dfb9fa3c28425297d080f69025fcbc73801825154cbf659abe00

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 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 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\939a42faab70585cf4aed59c73425492.exe
    "C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:508
    • C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.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:1972
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.exe
        3⤵
          PID:1632
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1632 -s 100
            4⤵
            • Program crash
            PID:1284
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          C:\Users\Admin\AppData\Local\Temp\939a42faab70585cf4aed59c73425492.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:1776
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh0.txt"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3268
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh1.txt"
            4⤵
              PID:2808
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh2.txt"
              4⤵
                PID:2820
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 92
                  5⤵
                  • Program crash
                  PID:2828
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh2.txt"
                4⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:4092
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh3.txt"
                4⤵
                  PID:1068
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh4.txt"
                  4⤵
                    PID:684
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 92
                      5⤵
                      • Program crash
                      PID:3216
                  • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                    /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh4.txt"
                    4⤵
                      PID:3212

              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\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh2.txt
                MD5

                f94dc819ca773f1e3cb27abbc9e7fa27

                SHA1

                9a7700efadc5ea09ab288544ef1e3cd876255086

                SHA256

                a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

                SHA512

                72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

              • C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\momnuvcsh4.txt
                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • memory/508-118-0x0000000002B30000-0x0000000002B31000-memory.dmp
                Filesize

                4KB

              • memory/508-117-0x0000000005590000-0x0000000005591000-memory.dmp
                Filesize

                4KB

              • memory/508-119-0x00000000056D0000-0x00000000056D1000-memory.dmp
                Filesize

                4KB

              • memory/508-120-0x0000000005580000-0x0000000005581000-memory.dmp
                Filesize

                4KB

              • memory/508-121-0x0000000005F40000-0x0000000005F42000-memory.dmp
                Filesize

                8KB

              • memory/508-122-0x0000000009130000-0x00000000091AD000-memory.dmp
                Filesize

                500KB

              • memory/508-123-0x000000000B940000-0x000000000B96E000-memory.dmp
                Filesize

                184KB

              • memory/508-116-0x00000000058F0000-0x00000000058F1000-memory.dmp
                Filesize

                4KB

              • memory/508-114-0x0000000000920000-0x0000000000921000-memory.dmp
                Filesize

                4KB

              • memory/684-159-0x000000000040C2A8-mapping.dmp
              • memory/1068-155-0x0000000000413750-mapping.dmp
              • memory/1068-154-0x0000000000400000-0x0000000000416000-memory.dmp
                Filesize

                88KB

              • memory/1632-129-0x0000000000401364-mapping.dmp
              • memory/1776-132-0x0000000000401364-mapping.dmp
              • memory/1776-135-0x0000000003410000-0x0000000003563000-memory.dmp
                Filesize

                1.3MB

              • memory/1776-136-0x0000000003411000-0x000000000350D000-memory.dmp
                Filesize

                1008KB

              • memory/1776-131-0x0000000000400000-0x0000000000443000-memory.dmp
                Filesize

                268KB

              • memory/1972-124-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/1972-125-0x00000000004010B8-mapping.dmp
              • memory/1972-130-0x0000000000400000-0x000000000042C000-memory.dmp
                Filesize

                176KB

              • memory/2808-143-0x0000000000400000-0x000000000041B000-memory.dmp
                Filesize

                108KB

              • memory/2808-144-0x0000000000411654-mapping.dmp
              • memory/2820-148-0x0000000000442F04-mapping.dmp
              • memory/3212-160-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

              • memory/3212-161-0x000000000040C2A8-mapping.dmp
              • memory/3268-140-0x0000000000423BC0-mapping.dmp
              • memory/3268-139-0x0000000000400000-0x0000000000426000-memory.dmp
                Filesize

                152KB

              • memory/4092-149-0x0000000000400000-0x0000000000459000-memory.dmp
                Filesize

                356KB

              • memory/4092-150-0x0000000000442F04-mapping.dmp