Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    19/11/2023, 22:26

General

  • Target

    35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe

  • Size

    274KB

  • MD5

    59e1227450eb946f0eb83fad2f72b1f5

  • SHA1

    b78400bfe2fb0dbe892b1dff5220a7de2c43dfc6

  • SHA256

    35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652

  • SHA512

    19fd57f8a026cd2cc64f4d8ac99538b9d90f9a33a3d70c2061131ea5094a53fa0c4bf23a6adaf51d06bdd799236860311cb4f67e7503ac43259461aedfeda1c2

  • SSDEEP

    3072:QlnO9lcF4LS5ZUsBHS9R071uEcR647ovb3Trh6e:UnXKL+By9R0ooMMrT

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 6 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe
    "C:\Users\Admin\AppData\Local\Temp\35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2952
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\npqxagog\
      2⤵
        PID:2024
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iccuxhlx.exe" C:\Windows\SysWOW64\npqxagog\
        2⤵
          PID:2080
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create npqxagog binPath= "C:\Windows\SysWOW64\npqxagog\iccuxhlx.exe /d\"C:\Users\Admin\AppData\Local\Temp\35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3048
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description npqxagog "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2104
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start npqxagog
          2⤵
          • Launches sc.exe
          PID:2704
        • C:\Windows\SysWOW64\netsh.exe
          "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
          2⤵
          • Modifies Windows Firewall
          PID:2620
      • C:\Windows\SysWOW64\npqxagog\iccuxhlx.exe
        C:\Windows\SysWOW64\npqxagog\iccuxhlx.exe /d"C:\Users\Admin\AppData\Local\Temp\35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2512
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:2972
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.200000 -p x -k -a cn/half --cpu-priority 1
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1604

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              11.8MB

              MD5

              c2e151612d213e26821ffd15b723e18f

              SHA1

              004a354aac0c3d9f7e8e1669607e505b8cd947f3

              SHA256

              e096309b0a84db90c018d350e1cb26ce3a6039110f97c561b152659149e15672

              SHA512

              f370a56f63699064fa4d679f83db18cbd74b51b87fad9c718fc82a4f09042ecbe5957d985d07661276aff650d94658f76fbe92355092037f1c556f59c9a40642

            • C:\Windows\SysWOW64\npqxagog\iccuxhlx.exe

              Filesize

              11.8MB

              MD5

              c2e151612d213e26821ffd15b723e18f

              SHA1

              004a354aac0c3d9f7e8e1669607e505b8cd947f3

              SHA256

              e096309b0a84db90c018d350e1cb26ce3a6039110f97c561b152659149e15672

              SHA512

              f370a56f63699064fa4d679f83db18cbd74b51b87fad9c718fc82a4f09042ecbe5957d985d07661276aff650d94658f76fbe92355092037f1c556f59c9a40642

            • memory/1604-75-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/1604-73-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/1604-62-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/1604-64-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/1604-72-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/1604-74-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/1604-76-0x0000000000140000-0x0000000000231000-memory.dmp

              Filesize

              964KB

            • memory/2512-10-0x00000000002D0000-0x00000000003D0000-memory.dmp

              Filesize

              1024KB

            • memory/2512-11-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/2512-16-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/2952-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2952-4-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/2952-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

              Filesize

              1024KB

            • memory/2952-7-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/2972-39-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-46-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-33-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-34-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-35-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-36-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-37-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-38-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-27-0x00000000000A0000-0x00000000000A6000-memory.dmp

              Filesize

              24KB

            • memory/2972-40-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-41-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-42-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-43-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-44-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-45-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-30-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-48-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-47-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-49-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2972-50-0x00000000000C0000-0x00000000000C5000-memory.dmp

              Filesize

              20KB

            • memory/2972-53-0x00000000000C0000-0x00000000000C5000-memory.dmp

              Filesize

              20KB

            • memory/2972-54-0x0000000005660000-0x0000000005A6B000-memory.dmp

              Filesize

              4.0MB

            • memory/2972-57-0x0000000005660000-0x0000000005A6B000-memory.dmp

              Filesize

              4.0MB

            • memory/2972-58-0x0000000000260000-0x0000000000267000-memory.dmp

              Filesize

              28KB

            • memory/2972-26-0x0000000001910000-0x0000000001B1F000-memory.dmp

              Filesize

              2.1MB

            • memory/2972-23-0x0000000001910000-0x0000000001B1F000-memory.dmp

              Filesize

              2.1MB

            • memory/2972-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2972-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2972-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2972-12-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2972-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2972-80-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB