Analysis

  • max time kernel
    160s
  • max time network
    168s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 02:51

General

  • Target

    c1abfa29655f3cfb43177a79e2762990.exe

  • Size

    10.0MB

  • MD5

    c1abfa29655f3cfb43177a79e2762990

  • SHA1

    a3f011d09806bc9560a8584482a5f1f90303445a

  • SHA256

    05668b1f4a68a7148117cda757555dd79ec8c53a3f966c49623f3301f59ad05c

  • SHA512

    7487bc17c5ab14641388c6a60168f86fe55a44a23b8b695710e003a7bd02ac2f1808abe24bbbbca440782b7807a8ea721fb864c8dc48b9d114f917138cfacb77

  • SSDEEP

    98304:Tjhd88888888888888888888888888888888888888888888888888888888888c:T

Malware Config

Extracted

Family

tofsee

C2

176.111.174.19

lazystax.ru

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 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).

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c1abfa29655f3cfb43177a79e2762990.exe
    "C:\Users\Admin\AppData\Local\Temp\c1abfa29655f3cfb43177a79e2762990.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2836
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uuwuycxt\
      2⤵
        PID:2620
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ncgowqb.exe" C:\Windows\SysWOW64\uuwuycxt\
        2⤵
          PID:2600
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create uuwuycxt binPath= "C:\Windows\SysWOW64\uuwuycxt\ncgowqb.exe /d\"C:\Users\Admin\AppData\Local\Temp\c1abfa29655f3cfb43177a79e2762990.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2256
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description uuwuycxt "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1220
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start uuwuycxt
          2⤵
          • Launches sc.exe
          PID:2468
        • 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:2136
      • C:\Windows\SysWOW64\uuwuycxt\ncgowqb.exe
        C:\Windows\SysWOW64\uuwuycxt\ncgowqb.exe /d"C:\Users\Admin\AppData\Local\Temp\c1abfa29655f3cfb43177a79e2762990.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2500

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              2.7MB

              MD5

              aefa972e1c777b669473323fac1cf80b

              SHA1

              d41b3ce9a644f27006b3c2e838a25914474c7815

              SHA256

              3294cf5aa22d90ab4710d6a1bd006f28ff2bef0ff4ac5175e5f474403cd2ccbe

              SHA512

              b813b6fd83da2a6882ca2738f86db5d799ee94c2e8e5d2ed1e80307382664564154bbf8125471f4c2c470d542db3e648b95aa929e9dbfe987f60fbb06fecd904

            • C:\Windows\SysWOW64\uuwuycxt\ncgowqb.exe

              Filesize

              12.9MB

              MD5

              73deec75b8ed6eefa2af439f0a5be845

              SHA1

              5affbfa2abcddf82e09eb387dc6fb836c33ac5a5

              SHA256

              629d874db6d350e3e5d7dd8f21ace03e0c3d196aaa89b69fab3746d43873adbf

              SHA512

              3b74571d32b8485289d17fd1c0185020a81e2dc2aa6b0b85b4a50ad30ea9b628cfe8c17e5d5f8259be84bed735602cbf262c9e883fa5140e835c0125061b5f52

            • memory/984-11-0x0000000000500000-0x0000000000600000-memory.dmp

              Filesize

              1024KB

            • memory/984-12-0x0000000000400000-0x000000000045D000-memory.dmp

              Filesize

              372KB

            • memory/984-17-0x0000000000400000-0x000000000045D000-memory.dmp

              Filesize

              372KB

            • memory/2500-16-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2500-13-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2500-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2500-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2500-22-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2500-23-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2836-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

              Filesize

              76KB

            • memory/2836-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

              Filesize

              76KB

            • memory/2836-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

              Filesize

              1024KB

            • memory/2836-7-0x0000000000400000-0x000000000045D000-memory.dmp

              Filesize

              372KB

            • memory/2836-5-0x0000000000400000-0x000000000045D000-memory.dmp

              Filesize

              372KB

            • memory/2836-3-0x0000000000400000-0x000000000045D000-memory.dmp

              Filesize

              372KB