Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-09-2024 01:34

General

  • Target

    2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe

  • Size

    14.5MB

  • MD5

    098f305ad80931639cbd55398fae8c4a

  • SHA1

    2389c6a040ba89e89ebd0502674c8626b232c3f9

  • SHA256

    2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca

  • SHA512

    611afe35a3fdf49526b6ec04a095f1fcea608b65dafd96f6e6b1d55eee5b7e3801a905620862764f91b2deb256c0a29c68da7d72ab0438421d5d5d70d8b7c3b8

  • SSDEEP

    6144:DLmhaXrxJHCx7HdqAT7mvs/bNAk3B79NmVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVj:DLmhaXrxJHuHdPT1n9N

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • 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\2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe
    "C:\Users\Admin\AppData\Local\Temp\2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfnizqit\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3244
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qxvglgui.exe" C:\Windows\SysWOW64\wfnizqit\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4572
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create wfnizqit binPath= "C:\Windows\SysWOW64\wfnizqit\qxvglgui.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1168
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description wfnizqit "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:228
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start wfnizqit
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3100
    • 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:2804
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 1296
      2⤵
      • Program crash
      PID:5036
  • C:\Windows\SysWOW64\wfnizqit\qxvglgui.exe
    C:\Windows\SysWOW64\wfnizqit\qxvglgui.exe /d"C:\Users\Admin\AppData\Local\Temp\2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2844
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 548 -s 520
      2⤵
      • Program crash
      PID:3048
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2764 -ip 2764
    1⤵
      PID:2344
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 548 -ip 548
      1⤵
        PID:3840

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        14.5MB

        MD5

        8f2c8de404d6468a79e8f7eb764a3959

        SHA1

        178ee832dd999cd1695c5e6bfabae624ad9c4d5c

        SHA256

        559602bd0d06824f3c1670f1c94dd0e9b60892e6fda4e346917847efd52b5652

        SHA512

        9cbd607e1b22d776fbbdddc059f2afa55d53a52ff603e50d46b2a55af29d9ef45a1fffbdc036a7c699803afc4dc761c6348a4a21629adf0e60d4063a31150f75

      • memory/548-12-0x0000000000400000-0x0000000000878000-memory.dmp

        Filesize

        4.5MB

      • memory/548-16-0x0000000000400000-0x0000000000878000-memory.dmp

        Filesize

        4.5MB

      • memory/2764-2-0x0000000000A00000-0x0000000000A13000-memory.dmp

        Filesize

        76KB

      • memory/2764-1-0x00000000008C0000-0x00000000009C0000-memory.dmp

        Filesize

        1024KB

      • memory/2764-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2764-8-0x0000000000400000-0x0000000000878000-memory.dmp

        Filesize

        4.5MB

      • memory/2764-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2764-9-0x0000000000A00000-0x0000000000A13000-memory.dmp

        Filesize

        76KB

      • memory/2844-14-0x00000000002F0000-0x0000000000305000-memory.dmp

        Filesize

        84KB

      • memory/2844-15-0x00000000002F0000-0x0000000000305000-memory.dmp

        Filesize

        84KB

      • memory/2844-11-0x00000000002F0000-0x0000000000305000-memory.dmp

        Filesize

        84KB