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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/01/2025, 20:16

General

  • Target

    2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe

  • Size

    10.0MB

  • MD5

    dc0400cc759c1d5f7ca5c11b9edda600

  • SHA1

    fff821ce69dd9ae482131d85e4bb6e218eb40435

  • SHA256

    f954da5648966e7534005b93d35de289192a6cc3e8f4e765b7de80bc2675c6d8

  • SHA512

    6fecf099f5aa85ea2d5dcd7cd3ae152261a5c20e02d71fc4ee43675f04286919f865c5ea7f3b66d8b005de8ef1843c80d6c278e116b5161a052b3537ec9a4162

  • SSDEEP

    24576:h6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQf:IWdLQk

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
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

  • Program crash 2 IoCs
  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4732
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\asikwgcr\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3464
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iccteneg.exe" C:\Windows\SysWOW64\asikwgcr\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2856
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create asikwgcr binPath= "C:\Windows\SysWOW64\asikwgcr\iccteneg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:996
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description asikwgcr "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4384
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start asikwgcr
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1240
    • 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:2772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4732 -s 1200
      2⤵
      • Program crash
      PID:2332
  • C:\Windows\SysWOW64\asikwgcr\iccteneg.exe
    C:\Windows\SysWOW64\asikwgcr\iccteneg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1692
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4224
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 532
      2⤵
      • Program crash
      PID:3816
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4732 -ip 4732
    1⤵
      PID:4700
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1692 -ip 1692
      1⤵
        PID:2376

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        11.8MB

        MD5

        e4ca60d23ab404d83cbf5be75e2f5a94

        SHA1

        0292d8f964e4bbb3fd78dceb420e1a99fccc6a9a

        SHA256

        10c1718e3ed3ac008ebcdb1e217727133dea14e06cbe04087615c8eff6b08f60

        SHA512

        5c80007a5cb1bb3f70576f4f1225aebf3dbddbbc0fbe25d9550e1ddf219a133e0e759c37012f2e3eff851b2ca9baab280f4fd27c67d8429823d5557f6753b51a

      • memory/1692-12-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/1692-11-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/1692-13-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/1692-19-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/4224-14-0x0000000000E90000-0x0000000000EA5000-memory.dmp

        Filesize

        84KB

      • memory/4224-16-0x0000000000E90000-0x0000000000EA5000-memory.dmp

        Filesize

        84KB

      • memory/4224-17-0x0000000000E90000-0x0000000000EA5000-memory.dmp

        Filesize

        84KB

      • memory/4732-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4732-2-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/4732-7-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/4732-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4732-8-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/4732-1-0x0000000000620000-0x0000000000720000-memory.dmp

        Filesize

        1024KB