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Analysis

  • max time kernel
    145s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    27/12/2024, 20:40

General

  • Target

    2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe

  • Size

    12.1MB

  • MD5

    bf0482b484090d1a7804ebb245a98bb1

  • SHA1

    9bde15de16971320eb45314538f3916547f85e4c

  • SHA256

    7361cc6e57468a8f812fb6174a3ca3081d136942c82a2cf6250e8eabdb9b0aee

  • SHA512

    cd6d9cf4d3a89a93f1274b2e85ce54f396c6aa3b573c93b8b30cbac6e229915b39c714d14befbf1e91a93abbac9aeec8cf589972665e1d32c60cea1da9c5b310

  • SSDEEP

    3072:/LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:2OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2952
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oysggfmi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2392
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cexipxlb.exe" C:\Windows\SysWOW64\oysggfmi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2964
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create oysggfmi binPath= "C:\Windows\SysWOW64\oysggfmi\cexipxlb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2988
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description oysggfmi "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2716
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start oysggfmi
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2672
    • 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:484
  • C:\Windows\SysWOW64\oysggfmi\cexipxlb.exe
    C:\Windows\SysWOW64\oysggfmi\cexipxlb.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2724
    • 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:2492

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.5MB

    MD5

    10a847cf732d4b09d0f4ed2cf9e3f366

    SHA1

    ab17a2871d472a67d49beab1b21e0932e4f5d2b5

    SHA256

    9c317f43e6ffb7ea959352573828f7f5398866eefb0a4b7294a7480ba6b20b31

    SHA512

    8255349528f388a520d3333eca762078869e39b71843c19fb4699f5201367ff9686f2dfed184aabb50149c498bb2e8905ff05177aacf4a781c9514a6532033bc

  • memory/2492-8-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2492-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2492-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2492-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2492-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2724-12-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2952-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2952-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2952-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

    Filesize

    1024KB

  • memory/2952-14-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2952-15-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2952-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB