Analysis

  • max time kernel
    131s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2024 12:14

General

  • Target

    2024-11-28_b08ffbd77399371263d6e747bafadd7d_karagany_mafia.exe

  • Size

    10.5MB

  • MD5

    b08ffbd77399371263d6e747bafadd7d

  • SHA1

    763d7e0270684647f84f19eabe2594a073f732eb

  • SHA256

    bacd49ab2847be07482d62f2465fb709ef691a5d9dafceb9edb1e5ae9388d4e7

  • SHA512

    dddbdeb2d9d459f2a8cb23ebd088454bdf1a0114660f03a9abebf9b2b51aea66069a0f8b1d14d046df1817f10b87bccb1f079df5c46272cd74cb77feed543b81

  • SSDEEP

    6144:jyXxZTquqxpXAdbbiFyKq3nUOcWfMMMMMMMbt:jyXzN8pXAdbbyyZtZfMMMMMMMb

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.

  • Tofsee family
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-28_b08ffbd77399371263d6e747bafadd7d_karagany_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-28_b08ffbd77399371263d6e747bafadd7d_karagany_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:692
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yqmwihyx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2260
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gjrrpnra.exe" C:\Windows\SysWOW64\yqmwihyx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3752
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create yqmwihyx binPath= "C:\Windows\SysWOW64\yqmwihyx\gjrrpnra.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-28_b08ffbd77399371263d6e747bafadd7d_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2024
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description yqmwihyx "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4432
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start yqmwihyx
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1756
    • 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:5064
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 692 -s 1036
      2⤵
      • Program crash
      PID:3844
  • C:\Windows\SysWOW64\yqmwihyx\gjrrpnra.exe
    C:\Windows\SysWOW64\yqmwihyx\gjrrpnra.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-28_b08ffbd77399371263d6e747bafadd7d_karagany_mafia.exe"
    1⤵
    • Executes dropped EXE
    PID:1260
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 692 -ip 692
    1⤵
      PID:4440

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      11.4MB

      MD5

      0933b2c130eb11b1654230f265b40d94

      SHA1

      b2cac5b04e24f568479a27aa8d2baa377f51df96

      SHA256

      abccdba6b8be1944388404dca4e8a1dcc9117dd38b1f32a9d494c45b2e040bc9

      SHA512

      af7feaf57bd1281ceb31c108c6e92f3bc9c4392ca6c36b08c867721c3441af925c965abfc9be9181feb561a575d448b8629b26fb18a1d1390730b1774565f790

    • memory/692-1-0x0000000000550000-0x0000000000650000-memory.dmp

      Filesize

      1024KB

    • memory/692-2-0x0000000000490000-0x00000000004A3000-memory.dmp

      Filesize

      76KB

    • memory/692-3-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB

    • memory/692-6-0x0000000000400000-0x0000000000481000-memory.dmp

      Filesize

      516KB

    • memory/692-8-0x0000000000400000-0x0000000000481000-memory.dmp

      Filesize

      516KB

    • memory/692-10-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB

    • memory/692-9-0x0000000000490000-0x00000000004A3000-memory.dmp

      Filesize

      76KB