Analysis
- max time kernel
22s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
17/03/2024, 02:41
General
- Target cfb8346932c26d1c2844441f85f2ae1e.exe
- Size 102KB
- Sample240317-c6yzmacf38
- SHA256 b0014ee0fe941ba8056aa17bc031d6411c093877bf3f6d19691d720850d7da77
Malware Config
Extracted
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sality
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http://89.119.67.154/testo5/
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http://kukutrustnet777.info/home.gif
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http://kukutrustnet888.info/home.gif
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http://kukutrustnet987.info/home.gif
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http://www.klkjwre9fqwieluoi.info/
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http://kukutrustnet777888.info/
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http://klkjwre77638dfqwieuoi888.info/
Signatures
- Modifies firewall policy service 2 TTPs 6 IoCs
- Sality
Sality is backdoor written in C++, first discovered in 2003.
- UAC bypass 3 TTPs 2 IoCs
- Windows security bypass 2 TTPs 12 IoCs
- Disables RegEdit via registry modification 2 IoCs
- Disables Task Manager via registry modification
- Executes dropped EXE 2 IoCs
- UPX packed file 12 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Windows security modification 2 TTPs 14 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Drops file in System32 directory 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 64 IoCs
- System policy modification 1 TTPs 2 IoCs
Processes
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
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C:\Windows\system32\dwm.exe"dwm.exe"1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵
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C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}1⤵
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\cfb8346932c26d1c2844441f85f2ae1e.exe"C:\Users\Admin\AppData\Local\Temp\cfb8346932c26d1c2844441f85f2ae1e.exe"2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Disables RegEdit via registry modification
- Windows security modification
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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\??\c:\windows\SysWOW64\wuaucldt.exec:\windows\system32\wuaucldt.exe3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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\??\c:\users\admin\wuaucldt.exec:\users\admin\wuaucldt.exe4⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe5⤵
- Writes to the Master Boot Record (MBR)
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c del c:\windows\syswow64\wuaucldt.exe4⤵
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c del c:\users\admin\appdata\local\temp\CFB834~1.EXE3⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\System32\wuapihost.exeC:\Windows\System32\wuapihost.exe -Embedding1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS2⤵
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
SYSTEM.INI
wuaucldt.exe
memory/1056-41-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1056-243-0x00000000029A0000-0x00000000029A2000-memory.dmp
memory/1056-121-0x0000000002AF0000-0x0000000002AF1000-memory.dmp
memory/1056-120-0x00000000029A0000-0x00000000029A2000-memory.dmp
memory/1056-54-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1056-61-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1056-39-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1056-63-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1056-40-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1056-43-0x0000000000600000-0x0000000000609000-memory.dmp
memory/1908-14-0x0000000000400000-0x000000000041C000-memory.dmp
memory/1908-20-0x00000000001F0000-0x00000000001F1000-memory.dmp
memory/1908-22-0x00000000001E0000-0x00000000001E2000-memory.dmp
memory/1908-55-0x00000000001E0000-0x00000000001E2000-memory.dmp
memory/1908-59-0x0000000000400000-0x000000000041C000-memory.dmp
memory/1908-62-0x0000000070000000-0x000000007000B000-memory.dmp
memory/1908-25-0x0000000070000000-0x000000007000B000-memory.dmp
memory/2884-37-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-12-0x0000000070000000-0x000000007000B000-memory.dmp
memory/2884-1-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-0-0x0000000000400000-0x000000000041C000-memory.dmp
memory/2884-32-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-4-0x0000000009000000-0x0000000009009000-memory.dmp
memory/2884-24-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-49-0x0000000001B00000-0x0000000001B02000-memory.dmp
memory/2884-42-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-19-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-16-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-17-0x0000000001B00000-0x0000000001B02000-memory.dmp
memory/2884-13-0x0000000001B00000-0x0000000001B02000-memory.dmp
memory/2884-34-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-64-0x0000000000400000-0x000000000041C000-memory.dmp
memory/2884-15-0x0000000001B10000-0x0000000001B11000-memory.dmp
memory/2884-9-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/2884-8-0x0000000009000000-0x0000000009009000-memory.dmp
memory/2884-3-0x00000000007C0000-0x000000000184E000-memory.dmp
memory/3604-113-0x0000000000C10000-0x0000000000C12000-memory.dmp
memory/3604-116-0x0000000000C30000-0x0000000000C31000-memory.dmp
memory/3604-108-0x0000000002900000-0x000000000398E000-memory.dmp
memory/3604-31-0x0000000000400000-0x000000000041C000-memory.dmp
memory/3604-227-0x0000000002900000-0x000000000398E000-memory.dmp
memory/3604-234-0x0000000000C10000-0x0000000000C12000-memory.dmp
memory/3604-36-0x0000000070000000-0x000000007000B000-memory.dmp