Analysis

  • max time kernel
    185s
  • max time network
    192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/11/2022, 20:18

General

  • Target

    90c70ced614e55e04cfa71b77dcfea8272317f496bb406849eb719f70cccd71a.exe

  • Size

    1.2MB

  • MD5

    eede44f9fff359762f09d0d819c97e0f

  • SHA1

    17cc6ca62f6542ac183a7530335f5ba478a71e21

  • SHA256

    90c70ced614e55e04cfa71b77dcfea8272317f496bb406849eb719f70cccd71a

  • SHA512

    cf41c3e6b9c586b31190813aa7c00c750bb00e9fb03ed3f21e4e686da6b22fe0686eb4de83e52c7dd6a80642fd9b09561ab62179147ae23beff1916fecad1424

  • SSDEEP

    24576:Ft24ot2EiSDXv8WN7ZXJVrTtjxak7WehQe5Zee1yR3:RYZiSbkE5rTtjXXBZ/1s

Malware Config

Extracted

Family

xtremerat

C2

goodday.zapto.org

Šꮨ妘tvnew.otzo.com

Signatures

  • Detect XtremeRAT payload 10 IoCs
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\90c70ced614e55e04cfa71b77dcfea8272317f496bb406849eb719f70cccd71a.exe
    "C:\Users\Admin\AppData\Local\Temp\90c70ced614e55e04cfa71b77dcfea8272317f496bb406849eb719f70cccd71a.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\doc.doc" /o ""
      2⤵
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:5100
    • C:\Users\Admin\AppData\Local\Temp\Skpe.exe
      "C:\Users\Admin\AppData\Local\Temp\Skpe.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Enumerates connected drives
      • Suspicious use of SetThreadContext
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2344
      • C:\Users\Admin\AppData\Local\Temp\Skpe.exe
        C:\Users\Admin\AppData\Local\Temp\Skpe.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1820
        • C:\Windows\SysWOW64\sethc.exe
          sethc.exe
          4⤵
            PID:1404
          • C:\Windows\SysWOW64\sethc.exe
            sethc.exe
            4⤵
              PID:2136
            • C:\Windows\SysWOW64\sethc.exe
              sethc.exe
              4⤵
                PID:1736
              • C:\Windows\SysWOW64\sethc.exe
                sethc.exe
                4⤵
                • Suspicious use of SetWindowsHookEx
                PID:5104
              • C:\Windows\SysWOW64\sethc.exe
                sethc.exe
                4⤵
                  PID:732

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Users\Admin\AppData\Local\Temp\Skpe.exe

                  Filesize

                  1.5MB

                  MD5

                  0946f59f7a3718e24ca16f089f7974f6

                  SHA1

                  143e879d7bb1b0322844c288a5c8c0aa88d78a29

                  SHA256

                  d357ab68c3253d5b235ea42fb65633e3d1993ee12b9135125e8b8c360566deec

                  SHA512

                  0e4ead1184a474c98bb2deb4f7450246559f3b713541a75a7084f861ee4239303796f3ab8ea16e02b4c0cda76437676bce7c58cf470e0adaf775a71fc51a5842

                • C:\Users\Admin\AppData\Local\Temp\Skpe.exe

                  Filesize

                  1.5MB

                  MD5

                  0946f59f7a3718e24ca16f089f7974f6

                  SHA1

                  143e879d7bb1b0322844c288a5c8c0aa88d78a29

                  SHA256

                  d357ab68c3253d5b235ea42fb65633e3d1993ee12b9135125e8b8c360566deec

                  SHA512

                  0e4ead1184a474c98bb2deb4f7450246559f3b713541a75a7084f861ee4239303796f3ab8ea16e02b4c0cda76437676bce7c58cf470e0adaf775a71fc51a5842

                • C:\Users\Admin\AppData\Local\Temp\Skpe.exe

                  Filesize

                  1.5MB

                  MD5

                  0946f59f7a3718e24ca16f089f7974f6

                  SHA1

                  143e879d7bb1b0322844c288a5c8c0aa88d78a29

                  SHA256

                  d357ab68c3253d5b235ea42fb65633e3d1993ee12b9135125e8b8c360566deec

                  SHA512

                  0e4ead1184a474c98bb2deb4f7450246559f3b713541a75a7084f861ee4239303796f3ab8ea16e02b4c0cda76437676bce7c58cf470e0adaf775a71fc51a5842

                • C:\Users\Admin\AppData\Local\Temp\doc.doc

                  Filesize

                  28KB

                  MD5

                  2dc148f5161f0914a2ca0136b088ed44

                  SHA1

                  cb47e69bb0fce98c6a16b687e05bba97143822bf

                  SHA256

                  84730b81737bf67aa69383aa304a89b5b4da29190d8d6268f80b6e4df90d9463

                  SHA512

                  e5a951481ca01eccc3c77069642256ca6822e837240c9b9cee78305570fd05998a98d9dae0e80e71811d7a4953df54d1b2fd732d35fb5e8729dfbfd773cfff21

                • memory/732-161-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/1736-159-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/1820-152-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/1820-155-0x0000000000400000-0x00000000006FE000-memory.dmp

                  Filesize

                  3.0MB

                • memory/1820-154-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/1820-163-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/1820-153-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/1820-147-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/2344-139-0x0000000000400000-0x00000000006FE000-memory.dmp

                  Filesize

                  3.0MB

                • memory/2344-150-0x0000000000400000-0x00000000006FE000-memory.dmp

                  Filesize

                  3.0MB

                • memory/2344-151-0x00000000081F0000-0x00000000081F4000-memory.dmp

                  Filesize

                  16KB

                • memory/2344-138-0x0000000000400000-0x00000000006FE000-memory.dmp

                  Filesize

                  3.0MB

                • memory/2344-140-0x0000000000400000-0x00000000006FE000-memory.dmp

                  Filesize

                  3.0MB

                • memory/2344-137-0x0000000000400000-0x00000000006FE000-memory.dmp

                  Filesize

                  3.0MB

                • memory/5100-141-0x00007FF7F07B0000-0x00007FF7F07C0000-memory.dmp

                  Filesize

                  64KB

                • memory/5100-158-0x00007FF7EE640000-0x00007FF7EE650000-memory.dmp

                  Filesize

                  64KB

                • memory/5100-145-0x00007FF7F07B0000-0x00007FF7F07C0000-memory.dmp

                  Filesize

                  64KB

                • memory/5100-144-0x00007FF7F07B0000-0x00007FF7F07C0000-memory.dmp

                  Filesize

                  64KB

                • memory/5100-143-0x00007FF7F07B0000-0x00007FF7F07C0000-memory.dmp

                  Filesize

                  64KB

                • memory/5100-142-0x00007FF7F07B0000-0x00007FF7F07C0000-memory.dmp

                  Filesize

                  64KB

                • memory/5100-164-0x00007FF7EE640000-0x00007FF7EE650000-memory.dmp

                  Filesize

                  64KB

                • memory/5104-162-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB

                • memory/5104-166-0x0000000000C80000-0x0000000000C96000-memory.dmp

                  Filesize

                  88KB