Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 05:37

General

  • Target

    c51ba681e2a91256b750c02a07e71214.exe

  • Size

    12.0MB

  • MD5

    c51ba681e2a91256b750c02a07e71214

  • SHA1

    e95e7d2ac0be130cd7bd10548130ed4e356c6f82

  • SHA256

    162517397a17d464746d2457475be8ab091e8378303c7cdaf745bc238434c34a

  • SHA512

    0960e67571090307e1768ab552cb8daedd5d31058a5d181d910c725d9ae022ccd4ad77dcb79b3481a9f059778e1049246f7559adf9cb0d5c277bd358b5356311

  • SSDEEP

    6144:V6uxTBt/Du+VqSPZlb3qahCecVeShkKo/HovAqeQmt6+:pxNt/D7cSPZZeeShkKo4ANz/

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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\c51ba681e2a91256b750c02a07e71214.exe
    "C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qvykorol\
      2⤵
        PID:1632
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\axpgctpn.exe" C:\Windows\SysWOW64\qvykorol\
        2⤵
          PID:2128
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create qvykorol binPath= "C:\Windows\SysWOW64\qvykorol\axpgctpn.exe /d\"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1732
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description qvykorol "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2584
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start qvykorol
          2⤵
          • Launches sc.exe
          PID:2708
        • 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:2836
      • C:\Windows\SysWOW64\qvykorol\axpgctpn.exe
        C:\Windows\SysWOW64\qvykorol\axpgctpn.exe /d"C:\Users\Admin\AppData\Local\Temp\c51ba681e2a91256b750c02a07e71214.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2596
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2060

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              14.4MB

              MD5

              2a81fb773f4b158b162ae3d35600785b

              SHA1

              edd6b84ac47540269cbe0272243868c987d43c8b

              SHA256

              befbdcc3632041c7c4862253b3afd976906b3f4dcc4572f43058a0cf6cdda5f1

              SHA512

              6221c2cbd74aa2b6662cb1c382456f353c6c34396872b227e098b2a71fda6be3270fdf9caa8a876f1f9072996b8ca13e91fdcb572d11ebaafc20643d2e219a08

            • memory/1724-1-0x0000000000D30000-0x0000000000E30000-memory.dmp

              Filesize

              1024KB

            • memory/1724-3-0x00000000003B0000-0x00000000003C3000-memory.dmp

              Filesize

              76KB

            • memory/1724-4-0x0000000000400000-0x00000000008EA000-memory.dmp

              Filesize

              4.9MB

            • memory/1724-7-0x0000000000400000-0x00000000008EA000-memory.dmp

              Filesize

              4.9MB

            • memory/1724-8-0x0000000000D30000-0x0000000000E30000-memory.dmp

              Filesize

              1024KB

            • memory/2060-11-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2060-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2060-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2060-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2060-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2060-22-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2596-10-0x00000000009A0000-0x0000000000AA0000-memory.dmp

              Filesize

              1024KB

            • memory/2596-13-0x0000000000400000-0x00000000008EA000-memory.dmp

              Filesize

              4.9MB

            • memory/2596-16-0x0000000000400000-0x00000000008EA000-memory.dmp

              Filesize

              4.9MB