Analysis

  • max time kernel
    90s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    29-06-2021 20:04

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 8 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:2752
    • 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:3028
      • 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:1172
        • 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:384
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\iigwtcexm0.txt"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2388
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\iigwtcexm1.txt"
            5⤵
              PID:2632
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\iigwtcexm2.txt"
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:4052
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\iigwtcexm3.txt"
              5⤵
                PID:2700
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\iigwtcexm4.txt"
                5⤵
                  PID:2380

        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\iigwtcexm2.txt
          MD5

          f94dc819ca773f1e3cb27abbc9e7fa27

          SHA1

          9a7700efadc5ea09ab288544ef1e3cd876255086

          SHA256

          a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

          SHA512

          72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

        • C:\Users\Admin\AppData\Roaming\J0B4S3L1-T6W3-H2L6-N2T2-W4T8H1F1E6U4\iigwtcexm4.txt
          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • memory/384-142-0x0000000000401364-mapping.dmp
        • memory/384-141-0x0000000000400000-0x0000000000443000-memory.dmp
          Filesize

          268KB

        • memory/384-146-0x00000000032A1000-0x000000000339D000-memory.dmp
          Filesize

          1008KB

        • memory/384-145-0x00000000032A0000-0x00000000033F3000-memory.dmp
          Filesize

          1.3MB

        • memory/1172-137-0x00000000004010B8-mapping.dmp
        • memory/1172-136-0x0000000000400000-0x000000000042C000-memory.dmp
          Filesize

          176KB

        • memory/1172-149-0x0000000000400000-0x000000000042C000-memory.dmp
          Filesize

          176KB

        • memory/2380-168-0x000000000040C2A8-mapping.dmp
        • memory/2380-167-0x0000000000400000-0x0000000000415000-memory.dmp
          Filesize

          84KB

        • memory/2388-150-0x0000000000400000-0x0000000000426000-memory.dmp
          Filesize

          152KB

        • memory/2388-151-0x0000000000423BC0-mapping.dmp
        • memory/2632-154-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB

        • memory/2632-155-0x0000000000411654-mapping.dmp
        • memory/2700-164-0x0000000000413750-mapping.dmp
        • memory/2700-163-0x0000000000400000-0x0000000000416000-memory.dmp
          Filesize

          88KB

        • memory/2752-119-0x0000000005640000-0x0000000005641000-memory.dmp
          Filesize

          4KB

        • memory/2752-116-0x0000000005BA0000-0x0000000005BA1000-memory.dmp
          Filesize

          4KB

        • memory/2752-117-0x00000000056A0000-0x00000000056A1000-memory.dmp
          Filesize

          4KB

        • memory/2752-118-0x0000000005740000-0x0000000005741000-memory.dmp
          Filesize

          4KB

        • memory/2752-123-0x000000000B670000-0x000000000B6EA000-memory.dmp
          Filesize

          488KB

        • memory/2752-122-0x0000000007490000-0x0000000007550000-memory.dmp
          Filesize

          768KB

        • memory/2752-121-0x0000000005B50000-0x0000000005B52000-memory.dmp
          Filesize

          8KB

        • memory/2752-120-0x00000000056A0000-0x0000000005B9E000-memory.dmp
          Filesize

          5.0MB

        • memory/2752-114-0x0000000000CE0000-0x0000000000CE1000-memory.dmp
          Filesize

          4KB

        • memory/3028-124-0x0000000000400000-0x000000000047C000-memory.dmp
          Filesize

          496KB

        • memory/3028-135-0x000000000BF60000-0x000000000BF8E000-memory.dmp
          Filesize

          184KB

        • memory/3028-125-0x000000000047746E-mapping.dmp
        • memory/3028-133-0x00000000055A0000-0x00000000055A1000-memory.dmp
          Filesize

          4KB

        • memory/3028-134-0x0000000009720000-0x000000000979D000-memory.dmp
          Filesize

          500KB

        • memory/4052-159-0x0000000000442F04-mapping.dmp
        • memory/4052-158-0x0000000000400000-0x0000000000459000-memory.dmp
          Filesize

          356KB