Analysis

  • max time kernel
    141s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 08:06

General

  • Target

    c562dc58e71fd79abd570506dfa5f123.exe

  • Size

    10.2MB

  • MD5

    c562dc58e71fd79abd570506dfa5f123

  • SHA1

    493df28d868ae1b809620c8e5b25d934b9e639f0

  • SHA256

    341c5f516b4e4557f25b162811efabca0135d390c00b061dce9f82608afe04cf

  • SHA512

    65884b9c366cb07f9244eaa697194d911e486a709dbbe40ab042af6240d979405fceca905e145e75dd266655f32c9fa8995bf22e32a27e461c4c125e0e073442

  • SSDEEP

    49152:w1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllln:wA

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

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\c562dc58e71fd79abd570506dfa5f123.exe
    "C:\Users\Admin\AppData\Local\Temp\c562dc58e71fd79abd570506dfa5f123.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\clgupcoz\
      2⤵
        PID:2640
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mlzbpmnf.exe" C:\Windows\SysWOW64\clgupcoz\
        2⤵
          PID:2676
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create clgupcoz binPath= "C:\Windows\SysWOW64\clgupcoz\mlzbpmnf.exe /d\"C:\Users\Admin\AppData\Local\Temp\c562dc58e71fd79abd570506dfa5f123.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2556
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description clgupcoz "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2912
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start clgupcoz
          2⤵
          • Launches sc.exe
          PID:2728
        • 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:3028
      • C:\Windows\SysWOW64\clgupcoz\mlzbpmnf.exe
        C:\Windows\SysWOW64\clgupcoz\mlzbpmnf.exe /d"C:\Users\Admin\AppData\Local\Temp\c562dc58e71fd79abd570506dfa5f123.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2476
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2464

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              12.7MB

              MD5

              772fc4ee05deadfbbf583be13de30678

              SHA1

              9aed6d8ab4f19bdead0a2d7553bff287593068ce

              SHA256

              f20383f68b4972d0579a715c91e8c7c1bf8b3847e52a55854bac5fb04b2fdbdd

              SHA512

              8328661ca8d0658535a59b28269c192af3e1b30cae6b4dcf2ba2bff3087083bd9f38fe43299c66be489db09e7a0b27c3bd81a9713b5100177a65670e3356dee4

            • C:\Windows\SysWOW64\clgupcoz\mlzbpmnf.exe

              Filesize

              3.6MB

              MD5

              76d525211c83d1608d094f22fb7c75b9

              SHA1

              169c498a04294a0bda8dd4912c0edc939decee99

              SHA256

              e41a8bdbde37b3bb5c84d1286e16156399c27c9246a57938a00c64da72f3314f

              SHA512

              6f8360d9c75017b46ce16659b9b6ff2541cff402f11ee43f2ee64fcffccea545284489c8fc80daf3e5e054c3d7208f398cba32afa1bb5fa1f56143e0de5295bd

            • memory/2160-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

              Filesize

              1024KB

            • memory/2160-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

              Filesize

              76KB

            • memory/2160-4-0x0000000000400000-0x0000000000C20000-memory.dmp

              Filesize

              8.1MB

            • memory/2160-7-0x0000000000400000-0x0000000000C20000-memory.dmp

              Filesize

              8.1MB

            • memory/2160-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

              Filesize

              76KB

            • memory/2464-11-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2464-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2464-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2464-19-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2464-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2464-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2476-10-0x0000000000230000-0x0000000000330000-memory.dmp

              Filesize

              1024KB

            • memory/2476-14-0x0000000000400000-0x0000000000C20000-memory.dmp

              Filesize

              8.1MB

            • memory/2476-16-0x0000000000400000-0x0000000000C20000-memory.dmp

              Filesize

              8.1MB