Analysis
- max time kernel
3s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
01/01/2024, 00:06
General
- Target 3b68da54fb8d64c5af84fceba0260579.exe
- Size 10.3MB
- Sample240101-adswssbba2
- SHA256 583bcd9cc37ac2f4d3f3c1c8133b3b843e851e7fba456bd189eef7090ba549f0
Malware Config
Extracted
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tofsee
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43.231.4.6
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lazystax.ru
Signatures
- Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
- Creates new service(s) 1 TTPs
- Modifies Windows Firewall 1 TTPs 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).
- Program crash 2 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3b68da54fb8d64c5af84fceba0260579.exe"C:\Users\Admin\AppData\Local\Temp\3b68da54fb8d64c5af84fceba0260579.exe"1⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sytwhhsk\2⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vfavmmfl.exe" C:\Windows\SysWOW64\sytwhhsk\2⤵
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create sytwhhsk binPath= "C:\Windows\SysWOW64\sytwhhsk\vfavmmfl.exe /d\"C:\Users\Admin\AppData\Local\Temp\3b68da54fb8d64c5af84fceba0260579.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description sytwhhsk "wifi internet conection"2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start sytwhhsk2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2296 -s 6642⤵
- Program crash
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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>nul2⤵
- Modifies Windows Firewall
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C:\Windows\SysWOW64\sytwhhsk\vfavmmfl.exeC:\Windows\SysWOW64\sytwhhsk\vfavmmfl.exe /d"C:\Users\Admin\AppData\Local\Temp\3b68da54fb8d64c5af84fceba0260579.exe"1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 5162⤵
- Program crash
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C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2296 -ip 22961⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4840 -ip 48401⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/708-10-0x00000000007E0000-0x00000000007F5000-memory.dmp
memory/708-18-0x00000000007E0000-0x00000000007F5000-memory.dmp
memory/708-16-0x00000000007E0000-0x00000000007F5000-memory.dmp
memory/708-19-0x00000000007E0000-0x00000000007F5000-memory.dmp
memory/2296-2-0x0000000002960000-0x0000000002973000-memory.dmp
memory/2296-1-0x0000000000D40000-0x0000000000E40000-memory.dmp
memory/2296-4-0x0000000000400000-0x0000000000C0A000-memory.dmp
memory/2296-8-0x0000000002960000-0x0000000002973000-memory.dmp
memory/2296-7-0x0000000000400000-0x0000000000C0A000-memory.dmp
memory/4840-12-0x0000000000DA0000-0x0000000000EA0000-memory.dmp
memory/4840-14-0x0000000000400000-0x0000000000C0A000-memory.dmp