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Analysis

  • max time kernel
    144s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2025, 20:23

General

  • Target

    2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe

  • Size

    13.3MB

  • MD5

    70d5445aff643254820787e3d9d98fd7

  • SHA1

    05a3e621f1ff47a109c7e96b93c51a7691ff122e

  • SHA256

    91f1a926f468016df323494e05f10cd9599caace8a2763855317583a1304ec91

  • SHA512

    669fee94508138f34d52478a40fb78ac8fd3994e991e30204b4edfd5160c21b87d77720079603a1548d79f91fb00e074dc38dd24da3a6b9a9ab2fd37e537b744

  • SSDEEP

    393216:vXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:

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.

  • 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_70d5445aff643254820787e3d9d98fd7_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yduigbhu\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3136
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ezdvlwyw.exe" C:\Windows\SysWOW64\yduigbhu\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1620
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create yduigbhu binPath= "C:\Windows\SysWOW64\yduigbhu\ezdvlwyw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3484
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description yduigbhu "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:776
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start yduigbhu
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3572
    • 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:1140
  • C:\Windows\SysWOW64\yduigbhu\ezdvlwyw.exe
    C:\Windows\SysWOW64\yduigbhu\ezdvlwyw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_70d5445aff643254820787e3d9d98fd7_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.8MB

    MD5

    538af626ce6fd98c266024a58fbe7fdf

    SHA1

    43227c5c8a1bb5a965d2f948457f46c2669988c1

    SHA256

    1a131bac385d692d3c4eb6397031e6566eccee8e05dbbd47da48c4c5301a8eab

    SHA512

    53fa0d0d7b7b3f4c3991b87c16fd7db1317820c7a0806dda25e27d90d9e1b712e5e5e41d18a42bd5b2fe1b8a6b59126fd064b68e80f9155c039737a498def530

  • memory/1716-9-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1716-11-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1716-2-0x0000000000530000-0x0000000000543000-memory.dmp

    Filesize

    76KB

  • memory/1716-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1716-10-0x0000000000530000-0x0000000000543000-memory.dmp

    Filesize

    76KB

  • memory/1716-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

    Filesize

    1024KB

  • memory/3148-13-0x0000000000A00000-0x0000000000A15000-memory.dmp

    Filesize

    84KB

  • memory/3148-19-0x0000000000A00000-0x0000000000A15000-memory.dmp

    Filesize

    84KB

  • memory/3148-18-0x0000000000A00000-0x0000000000A15000-memory.dmp

    Filesize

    84KB

  • memory/3148-20-0x0000000000A00000-0x0000000000A15000-memory.dmp

    Filesize

    84KB

  • memory/3148-21-0x0000000000A00000-0x0000000000A15000-memory.dmp

    Filesize

    84KB

  • memory/4816-12-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/4816-8-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/4816-16-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB