Analysis

  • max time kernel
    137s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    04-05-2023 12:31

General

  • Target

    arrow/2380ff875da958af3a345764860a8d70761bdc4f9feb20c1b183a83b9cae1b0c.exe

  • Size

    138KB

  • MD5

    e22c97f1931fdec29962ae778c5b44c3

  • SHA1

    7b0587f698a12619a735ce2536ec6a298ac92874

  • SHA256

    2380ff875da958af3a345764860a8d70761bdc4f9feb20c1b183a83b9cae1b0c

  • SHA512

    6f65b90401c650f66e22fb65c176edf73c09ef0bc0a34f7ee761fb984032e975cc3835dcdb22bc3d62c99678ad7a03b0fcbeb8dd679728ce49d035763c49c309

  • SSDEEP

    3072:2bvt5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/Y0:2bv7S7BqjjYHdrqkL/

Malware Config

Extracted

Family

arrowrat

Botnet

Y905DC

C2

windowsii.duckdns.org:1338

Mutex

QTZ3XG

Signatures

  • ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 17 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\arrow\2380ff875da958af3a345764860a8d70761bdc4f9feb20c1b183a83b9cae1b0c.exe
    "C:\Users\Admin\AppData\Local\Temp\arrow\2380ff875da958af3a345764860a8d70761bdc4f9feb20c1b183a83b9cae1b0c.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1144
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1228
      • C:\Windows\system32\ctfmon.exe
        ctfmon.exe
        3⤵
          PID:2028
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
        2⤵
          PID:2036
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
          2⤵
            PID:568
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
            2⤵
              PID:772
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
              2⤵
                PID:588
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
                2⤵
                  PID:852
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
                  2⤵
                    PID:668
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
                    2⤵
                      PID:864
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
                      2⤵
                        PID:976
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
                        2⤵
                          PID:688
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
                          2⤵
                            PID:1184
                        • C:\Windows\system32\AUDIODG.EXE
                          C:\Windows\system32\AUDIODG.EXE 0x54c
                          1⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1180

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

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                        Downloads

                        • memory/1144-54-0x0000000000100000-0x0000000000128000-memory.dmp

                          Filesize

                          160KB

                        • memory/1228-55-0x0000000004060000-0x0000000004061000-memory.dmp

                          Filesize

                          4KB

                        • memory/1228-56-0x0000000004060000-0x0000000004061000-memory.dmp

                          Filesize

                          4KB

                        • memory/1228-60-0x0000000002720000-0x0000000002730000-memory.dmp

                          Filesize

                          64KB