Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 11:09

General

  • Target

    nuevo pedido#23785.exe

  • Size

    430KB

  • MD5

    45fe143aec6a446a2bfec96054dc923c

  • SHA1

    a00719ef783406b10e44962ee6869e6a6fcc9e0d

  • SHA256

    71cd3e3afcd5a2df4cc2092f8724b24c6a8cc7e6f44f77cc8174dac0a565f98b

  • SHA512

    97967ad8de22d724541b985e0beb9ac68a5bfd2884df5d408fca79318dd9259e801dcfbddaacaf34bdc25128a1a00af78230bf818ce5c24b1ae3b18c545e540b

Malware Config

Signatures

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

    XpertRAT is a remote access trojan with various capabilities.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Windows security modification 2 TTPs 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 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\nuevo pedido#23785.exe
    "C:\Users\Admin\AppData\Local\Temp\nuevo pedido#23785.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Users\Admin\AppData\Local\Temp\nuevo pedido#23785.exe
      "C:\Users\Admin\AppData\Local\Temp\nuevo pedido#23785.exe"
      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:1760
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\nuevo pedido#23785.exe
        3⤵
          PID:1968
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          C:\Users\Admin\AppData\Local\Temp\nuevo pedido#23785.exe
          3⤵
            PID:984
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            C:\Users\Admin\AppData\Local\Temp\nuevo pedido#23785.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:760
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid0.txt"
              4⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:308
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid1.txt"
              4⤵
              • Accesses Microsoft Outlook accounts
              PID:1272
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid2.txt"
              4⤵
                PID:1812
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid3.txt"
                4⤵
                  PID:1176
                • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                  /stext "C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid4.txt"
                  4⤵
                    PID:1624

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid2.txt

              MD5

              f3b25701fe362ec84616a93a45ce9998

              SHA1

              d62636d8caec13f04e28442a0a6fa1afeb024bbb

              SHA256

              b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

              SHA512

              98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

            • C:\Users\Admin\AppData\Roaming\I4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\yrkxygjid4.txt

              MD5

              f3b25701fe362ec84616a93a45ce9998

              SHA1

              d62636d8caec13f04e28442a0a6fa1afeb024bbb

              SHA256

              b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

              SHA512

              98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

            • memory/1760-63-0x0000000000400000-0x000000000042C000-memory.dmp

              Filesize

              176KB

            • memory/1760-60-0x0000000000400000-0x000000000042C000-memory.dmp

              Filesize

              176KB

            • memory/1760-62-0x0000000000400000-0x000000000042C000-memory.dmp

              Filesize

              176KB

            • memory/1760-61-0x0000000000400000-0x000000000042C000-memory.dmp

              Filesize

              176KB

            • memory/1760-66-0x0000000000401000-0x000000000042C000-memory.dmp

              Filesize

              172KB

            • memory/1892-57-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

              Filesize

              4KB

            • memory/1892-58-0x000000007EF40000-0x000000007EFA0000-memory.dmp

              Filesize

              384KB

            • memory/1892-59-0x00000000047E0000-0x0000000004842000-memory.dmp

              Filesize

              392KB

            • memory/1892-54-0x00000000002A0000-0x0000000000312000-memory.dmp

              Filesize

              456KB

            • memory/1892-56-0x0000000000520000-0x000000000052E000-memory.dmp

              Filesize

              56KB

            • memory/1892-55-0x00000000751B1000-0x00000000751B3000-memory.dmp

              Filesize

              8KB