Analysis

  • max time kernel
    144s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    01-09-2024 03:44

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.

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe
    "C:\Users\Admin\AppData\Local\Temp\2b7385aa5abdda5bbf3da3fc48215fc837b3cd15270fc618ceac03bfb5c0ddca.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2152
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbqzchwc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2400
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nsogeht.exe" C:\Windows\SysWOW64\lbqzchwc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2552
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create lbqzchwc binPath= "C:\Windows\SysWOW64\lbqzchwc\nsogeht.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:2420
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description lbqzchwc "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2696
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start lbqzchwc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2960
    • 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:2848
  • C:\Windows\SysWOW64\lbqzchwc\nsogeht.exe
    C:\Windows\SysWOW64\lbqzchwc\nsogeht.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:2804
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.1MB

    MD5

    bd14c54d6dd54ec7d194f4e6841fa6dc

    SHA1

    7bfb12a016ba0c064ab54e7e5ce5c9ce3b683eef

    SHA256

    081d0e635b35b9b8cd9352d83d426ee2db317a7b5fd3fa1ea86d0e3219446f94

    SHA512

    98498d1f5cac21c6391fdfec6c74d1ce7b0a4bbadbee4b40660ca27c611822d4082fc79127e2a82812a4070a4c2c337096733ff0c73108ceae5580e448fb1b4e

  • memory/2152-9-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2152-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2152-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2152-8-0x0000000000400000-0x0000000000878000-memory.dmp

    Filesize

    4.5MB

  • memory/2152-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2152-1-0x00000000009B0000-0x0000000000AB0000-memory.dmp

    Filesize

    1024KB

  • memory/2804-17-0x0000000000400000-0x0000000000878000-memory.dmp

    Filesize

    4.5MB

  • memory/2904-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2904-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2904-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2904-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2904-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB