Analysis

  • max time kernel
    144s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11-01-2025 10:43

General

  • Target

    2025-01-11_5d4530f4539414ec9edc8c7af562a62a_mafia.exe

  • Size

    13.9MB

  • MD5

    5d4530f4539414ec9edc8c7af562a62a

  • SHA1

    bf6c1885985e624fa874eb3b7f6ba0ee7a8d786d

  • SHA256

    85e53d805fdc69c8dedafa896ceb421bd636a3d94652671768af4fbca7e89ca0

  • SHA512

    716ef912db4aff47256ae0922ce8e9377feac7336187d511c4c0d1de99a591a97b5e185ab1ac5670cc0be7fe56d083e2c9f3408562fc5d75e2b43f8a1bed3501

  • SSDEEP

    393216:+XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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
  • 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\2025-01-11_5d4530f4539414ec9edc8c7af562a62a_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-11_5d4530f4539414ec9edc8c7af562a62a_mafia.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\irxkpwmf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2280
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\izvctswa.exe" C:\Windows\SysWOW64\irxkpwmf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1292
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create irxkpwmf binPath= "C:\Windows\SysWOW64\irxkpwmf\izvctswa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-11_5d4530f4539414ec9edc8c7af562a62a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2784
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description irxkpwmf "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2636
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start irxkpwmf
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2748
    • 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:2620
  • C:\Windows\SysWOW64\irxkpwmf\izvctswa.exe
    C:\Windows\SysWOW64\irxkpwmf\izvctswa.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-11_5d4530f4539414ec9edc8c7af562a62a_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2612
    • 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:2576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.7MB

    MD5

    8b2bfd98f7a67be7cf3cca77f60b2c77

    SHA1

    d5137cd797229cf309edaea9e77c9e840d564d7c

    SHA256

    a8786e809db0f73eb45a3751cc5adeed5a3f298de5e9d79ed1833a4177ed12a5

    SHA512

    c52a4a295e7dd38d4f6e2f8df7fb73c6fb65ae8776d9acdba53bd1989fad22d86984ada35a193feece095000ae6f9e158cf436e76461b54a39560db31814fe96

  • memory/1048-7-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1048-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1048-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

    Filesize

    1024KB

  • memory/1048-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1048-8-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/1048-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2576-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2576-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2576-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2576-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2576-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2612-15-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB