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Analysis

  • max time kernel
    140s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/01/2025, 18:57

General

  • Target

    2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe

  • Size

    12.5MB

  • MD5

    cdf6691f9acb932affd7efbe0f87c67b

  • SHA1

    6eef017fc547bf10e160edb2c353c8c38f7cb2f6

  • SHA256

    c622452a6ef4332517517de6d958dc47b9f9a6fe902cac7ab04482ab94f00a18

  • SHA512

    b94d846d568150a5b00156710ef62f3c7d05e31572114f89cb2d28dbd2337d6e37e1a556f778122d82e279b67c6c2738d9245d095af813147da30de3bb2690f5

  • SSDEEP

    393216:RXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xxslndgo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2776
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fkupjvsu.exe" C:\Windows\SysWOW64\xxslndgo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2664
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create xxslndgo binPath= "C:\Windows\SysWOW64\xxslndgo\fkupjvsu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2824
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description xxslndgo "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2848
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start xxslndgo
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2712
    • 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:2964
  • C:\Windows\SysWOW64\xxslndgo\fkupjvsu.exe
    C:\Windows\SysWOW64\xxslndgo\fkupjvsu.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2764
    • 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:2580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.9MB

    MD5

    4194c67ea9c21ab47367c54e378a0cf0

    SHA1

    12446a1a96ca6ee1daaf42d7b0e49784ee4d311c

    SHA256

    b9ae9c774ef76ab4bf51e5b5c213e0179e2c5b31d8e6b636df02bb157bee64fe

    SHA512

    98321820f23ae29e790dc3a4cb1c13ad97e3a5c561d3f06e3ffa2afaa519cf85417b71a63740ab2bfbc38ada0b599d44c2e05c0132deb4811df5872240f17bf8

  • memory/2580-8-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2580-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2580-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2580-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2580-19-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2648-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2648-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2648-1-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2648-17-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2648-15-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2648-14-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2648-16-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2764-13-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB