Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03-09-2024 07:25

General

  • Target

    93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9.exe

  • Size

    14.7MB

  • MD5

    85fc255b144ad1bae941cb10f76c562d

  • SHA1

    6961b75a7e5e1720c6fd01b4979c77f3269e7aec

  • SHA256

    93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9

  • SHA512

    e7e6ce112594f2d6a597ecd063e2797f1695be72dbd59316410d186be6e8876116662aa95d9ad25107a079b04eaffa7a7c039a99f2ef2fa15ae4681bace3f819

  • SSDEEP

    98304:/UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUc:

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\93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9.exe
    "C:\Users\Admin\AppData\Local\Temp\93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mdpnksyf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2204
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gawcnxpv.exe" C:\Windows\SysWOW64\mdpnksyf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2372
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create mdpnksyf binPath= "C:\Windows\SysWOW64\mdpnksyf\gawcnxpv.exe /d\"C:\Users\Admin\AppData\Local\Temp\93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1376
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description mdpnksyf "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2764
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start mdpnksyf
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2860
    • 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:2264
  • C:\Windows\SysWOW64\mdpnksyf\gawcnxpv.exe
    C:\Windows\SysWOW64\mdpnksyf\gawcnxpv.exe /d"C:\Users\Admin\AppData\Local\Temp\93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2908
    • 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:2652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.7MB

    MD5

    a9c5ab2e6d8b69e971b6aaeb8bbeb55a

    SHA1

    68f7cd0d16f561d77f5841d802434e70b1199d5a

    SHA256

    3a83259bbc0c0ce020e1f4071c027415738d1da6f3d345c6eb956856e0743fc5

    SHA512

    272e537df1391ba0396f1dab614ba2f550a9752a69fb267e0b1a27c5ed8fc8ed211080912a0db2fc744caf056f04c3cdda6014f682ffdb1cdf67f19159aecdc9

  • memory/2652-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2652-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2652-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2652-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2652-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2700-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2700-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2700-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2700-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2700-8-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2700-1-0x0000000000500000-0x0000000000600000-memory.dmp

    Filesize

    1024KB

  • memory/2908-17-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB