Analysis

  • max time kernel
    144s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 05:48

General

  • Target

    00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe

  • Size

    11.2MB

  • MD5

    6673656f0eea34edbe311046d2525113

  • SHA1

    d94411ba9cec4a38a2f2ddf11df6f2e27eb5cbfd

  • SHA256

    00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc

  • SHA512

    f321489b42db6d062837414749adaefffeb87703f937b8ebb1e27a670cae75128af278222284b8bd72d26828535b1683d821e97b721d110b971d183312f37a01

  • SSDEEP

    12288:ozZd0++++++++++++++++++++++++++++++++++++++++++++++++++++++++++/:ozZ

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\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe
    "C:\Users\Admin\AppData\Local\Temp\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2292
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vrbbflmn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mggxirik.exe" C:\Windows\SysWOW64\vrbbflmn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2436
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create vrbbflmn binPath= "C:\Windows\SysWOW64\vrbbflmn\mggxirik.exe /d\"C:\Users\Admin\AppData\Local\Temp\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2188
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description vrbbflmn "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2684
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start vrbbflmn
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2764
    • 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:2900
  • C:\Windows\SysWOW64\vrbbflmn\mggxirik.exe
    C:\Windows\SysWOW64\vrbbflmn\mggxirik.exe /d"C:\Users\Admin\AppData\Local\Temp\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2748
    • 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:2568

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.2MB

    MD5

    e19ed2f1c39b73a5d67999c3771940d8

    SHA1

    c6d47c863e1dea546852247cf96a2933003d9fe0

    SHA256

    559a08c827b14ac5ab99138ddd6abff57b500052cf26d9fb4c5cbdd01267a88a

    SHA512

    e689cda154dbe2902ac39509395a064f327e671e098f95c14de44b2d7307af224fca241728e494988d49e4357a20f3ec8af8c95eb0a28b299fe1d79c1fd39563

  • memory/2292-7-0x0000000000400000-0x0000000002DAC000-memory.dmp

    Filesize

    41.7MB

  • memory/2292-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2292-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2292-10-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2292-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2292-1-0x0000000002F10000-0x0000000003010000-memory.dmp

    Filesize

    1024KB

  • memory/2568-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2568-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2568-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2568-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2568-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2748-17-0x0000000000400000-0x0000000002DAC000-memory.dmp

    Filesize

    41.7MB