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Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2025, 01:08

General

  • Target

    2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe

  • Size

    14.0MB

  • MD5

    7ad23caeb2c9e5adc7a3ee8e4881d40c

  • SHA1

    df8f22b2382a5dac799c19b814d8a4c2c6de33d6

  • SHA256

    942030f148b84380bd6d7d6b19ce99a8717e4614333e216e505f0886087a1243

  • SHA512

    cdc90ae7180cdcdcf33b19157439c276459f6bf53af4d43c33292707f2d6bb20a7570a4259e02feb883d9234a37fe0e9575f49ea0d381facef64e2e04dd0dc4e

  • SSDEEP

    24576:ypomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttH:Woo

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\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3544
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uoisjoms\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4116
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pgomwrym.exe" C:\Windows\SysWOW64\uoisjoms\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4812
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create uoisjoms binPath= "C:\Windows\SysWOW64\uoisjoms\pgomwrym.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3100
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description uoisjoms "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1028
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start uoisjoms
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2224
    • 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:2792
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3544 -s 1272
      2⤵
      • Program crash
      PID:3564
  • C:\Windows\SysWOW64\uoisjoms\pgomwrym.exe
    C:\Windows\SysWOW64\uoisjoms\pgomwrym.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2636
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2784
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 560
      2⤵
      • Program crash
      PID:1216
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3544 -ip 3544
    1⤵
      PID:964
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2636 -ip 2636
      1⤵
        PID:3216

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        10.1MB

        MD5

        d40a5a99e5b66745edc1ffffe25704bf

        SHA1

        a2ddf4036ed9099538750b25bed4cc119c5e2840

        SHA256

        1deebe0c1ec4fd9bbb1cbf89e3660f395ae7b0fe8c7ec77ccea2fc84ca2cf3e5

        SHA512

        54e291047537190a4d347f40c660044e95a740edba8499d5cf130c345a2ba281480a77d2df8e2a4f6e6c7b04cdcb92945a73a70a5215a7933b69e6cd7e1b38cb

      • memory/2636-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2636-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2636-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2636-18-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2784-14-0x0000000000E50000-0x0000000000E65000-memory.dmp

        Filesize

        84KB

      • memory/2784-16-0x0000000000E50000-0x0000000000E65000-memory.dmp

        Filesize

        84KB

      • memory/2784-17-0x0000000000E50000-0x0000000000E65000-memory.dmp

        Filesize

        84KB

      • memory/3544-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3544-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

      • memory/3544-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3544-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3544-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

      • memory/3544-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

        Filesize

        1024KB