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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
    28/01/2025, 10:48

General

  • Target

    2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe

  • Size

    11.3MB

  • MD5

    c5c84333e789e6a438348a5486a6d01c

  • SHA1

    29f733539b5bf6f1cd2b9f26598e50ac8eb9e922

  • SHA256

    97b12ec9acdaf954e9b4146a812dee8769dad50e1518505098fea65e0d612623

  • SHA512

    413f2af7181bdc2940e05a98f3911aab7d71dc61c8f6199290f552bff7b0d00842065b251528ab6ccc787e275836a9286b022ba1e3ce04c2a79d354c7a4cc020

  • SSDEEP

    24576:FEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZD:Ofot

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\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1376
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\grhxkuqc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4820
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dlaerpyy.exe" C:\Windows\SysWOW64\grhxkuqc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1712
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create grhxkuqc binPath= "C:\Windows\SysWOW64\grhxkuqc\dlaerpyy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1760
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description grhxkuqc "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4608
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start grhxkuqc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4440
    • 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:4744
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1376 -s 1028
      2⤵
      • Program crash
      PID:3896
  • C:\Windows\SysWOW64\grhxkuqc\dlaerpyy.exe
    C:\Windows\SysWOW64\grhxkuqc\dlaerpyy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3864
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4924
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 508
      2⤵
      • Program crash
      PID:4344
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1376 -ip 1376
    1⤵
      PID:232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3864 -ip 3864
      1⤵
        PID:2184

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        14.1MB

        MD5

        0aa045fd7e868d2b897f7c7d49bd3da1

        SHA1

        3f32cac736e6fcc3ff4e9dbfbb2fabd1317d7fc2

        SHA256

        432fa98f61def37c7834351b857e1775a33a94de164b7f94ec7320716daf0fa0

        SHA512

        e25477ad497ccc470fd73a14d2212dad22c258f49e73b958baf0438b9e1b9e5f30027ce484dcb2534e582c9283a5bd8f2a2452786ea2a37ff0c56d8a2f7a9525

      • memory/1376-8-0x0000000000560000-0x0000000000573000-memory.dmp

        Filesize

        76KB

      • memory/1376-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1376-2-0x0000000000560000-0x0000000000573000-memory.dmp

        Filesize

        76KB

      • memory/1376-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1376-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1376-1-0x0000000000720000-0x0000000000820000-memory.dmp

        Filesize

        1024KB

      • memory/3864-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3864-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3864-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3864-19-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4924-14-0x0000000000630000-0x0000000000645000-memory.dmp

        Filesize

        84KB

      • memory/4924-16-0x0000000000630000-0x0000000000645000-memory.dmp

        Filesize

        84KB

      • memory/4924-17-0x0000000000630000-0x0000000000645000-memory.dmp

        Filesize

        84KB