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Analysis

  • max time kernel
    144s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/09/2024, 10:57

General

  • Target

    2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe

  • Size

    11.6MB

  • MD5

    ac20eaa882bf941cebe29670759c588e

  • SHA1

    1811b68bbcdf114ed21fd6d50a4cafc1a15f11c1

  • SHA256

    ca525fe8bf95a32af296ac08e7a99b76bb7e06cb55e40d66ebff0228c9cb2186

  • SHA512

    defed9cd1f093a3b9d409446650b252fbbf36aed248358b256dc1c8150f92db7f2084d1618f06f5d6de0509daea443835c74a771b2d142705ac6919eadef325b

  • SSDEEP

    6144:D+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:D+r1IeSXMXc7LlxWV4Ug97GZ+ej

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) 2 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gboucchf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2388
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kreehskf.exe" C:\Windows\SysWOW64\gboucchf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2136
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create gboucchf binPath= "C:\Windows\SysWOW64\gboucchf\kreehskf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2332
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description gboucchf "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2156
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start gboucchf
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2720
    • 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
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2972
  • C:\Windows\SysWOW64\gboucchf\kreehskf.exe
    C:\Windows\SysWOW64\gboucchf\kreehskf.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2776
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2896

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.4MB

    MD5

    1c1323cf707fafdf1f7ef48598069e2e

    SHA1

    ee7860750369521fafa184488a55140192af367b

    SHA256

    2b6866b392a0a2622228b6321166371f6c14fc8ff654bef06324a595075c2455

    SHA512

    f8b62663e0295554de07b511fa4d94398d4ba2c2bc2724d773cd8450a01c7602e4daa0b5b65e37d049783fe7e7517171662b6093eac174dc32fc1e3f5c5162ff

  • memory/1828-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

    Filesize

    1024KB

  • memory/1828-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1828-13-0x0000000000400000-0x000000000051A000-memory.dmp

    Filesize

    1.1MB

  • memory/1828-15-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1828-14-0x00000000006F0000-0x00000000007F0000-memory.dmp

    Filesize

    1024KB

  • memory/2776-12-0x0000000000400000-0x000000000051A000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-10-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2896-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2896-7-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2896-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2896-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB