Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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.

  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 23 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⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:864
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ddxrpnqa\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4704
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jmuusqud.exe" C:\Windows\SysWOW64\ddxrpnqa\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:564
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ddxrpnqa binPath= "C:\Windows\SysWOW64\ddxrpnqa\jmuusqud.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:2676
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ddxrpnqa "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5088
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ddxrpnqa
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:820
    • 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:3916
  • C:\Windows\SysWOW64\ddxrpnqa\jmuusqud.exe
    C:\Windows\SysWOW64\ddxrpnqa\jmuusqud.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:4420
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.4MB

    MD5

    116ed1501a581439236cd82cdc7edf5c

    SHA1

    7d5609d78d893f72182588f8a4537ae4367ca382

    SHA256

    98a9b8fc7deb2a47d9c2ccb13c6f923c51c88ba734152ccf2e7a25f3caf37da4

    SHA512

    7f21d402ae11d1bcc65d743f50daefbeef5adcefbfd9b424c10ab818b6125d0e696556da77d210402f7bdcd356ddf10e257da7f81576c815fbd01c314b64fe8c

  • memory/864-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

    Filesize

    1024KB

  • memory/864-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/864-7-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/864-6-0x0000000000400000-0x000000000051A000-memory.dmp

    Filesize

    1.1MB

  • memory/1880-11-0x0000000000880000-0x0000000000895000-memory.dmp

    Filesize

    84KB

  • memory/1880-15-0x0000000000880000-0x0000000000895000-memory.dmp

    Filesize

    84KB

  • memory/1880-16-0x0000000000880000-0x0000000000895000-memory.dmp

    Filesize

    84KB

  • memory/4420-9-0x0000000000400000-0x000000000051A000-memory.dmp

    Filesize

    1.1MB

  • memory/4420-10-0x0000000000400000-0x000000000051A000-memory.dmp

    Filesize

    1.1MB

  • memory/4420-13-0x0000000000400000-0x000000000051A000-memory.dmp

    Filesize

    1.1MB