Analysis
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max time kernel
145s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
01-09-2024 04:20
Static task
static1
Behavioral task
behavioral1
Sample
d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe
Resource
win10v2004-20240802-en
General
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Target
d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe
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Size
10.3MB
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MD5
7add49d3f94626db3bfd88652c55403b
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SHA1
c99c8680050272cade3963627fa87e697b4ee564
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SHA256
d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f
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SHA512
19edd3367327213abc11f3d696b46cdd4184a74e6653e43b0283aebcd0de135f43e92b69a1906328c318a5e7a3c06806665a015cbe70e5ee9e13e91e7654ca4f
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SSDEEP
196608:9I+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++G:9
Malware Config
Extracted
tofsee
defeatwax.ru
refabyd.info
Signatures
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Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\chlnykou = "0" svchost.exe -
Creates new service(s) 2 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 2764 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\chlnykou\ImagePath = "C:\\Windows\\SysWOW64\\chlnykou\\pnxvvluk.exe" svchost.exe -
Deletes itself 1 IoCs
Processes:
svchost.exepid process 3028 svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
pnxvvluk.exepid process 2908 pnxvvluk.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
pnxvvluk.exedescription pid process target process PID 2908 set thread context of 3028 2908 pnxvvluk.exe svchost.exe -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exesc.exesc.exepid process 2812 sc.exe 2928 sc.exe 2452 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
Processes:
netsh.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe -
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.
Processes:
sc.exesvchost.execmd.execmd.exesc.exenetsh.exepnxvvluk.exed15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exesc.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language pnxvvluk.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exepnxvvluk.exedescription pid process target process PID 2688 wrote to memory of 1832 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 1832 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 1832 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 1832 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 2000 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 2000 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 2000 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 2000 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe cmd.exe PID 2688 wrote to memory of 2928 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2928 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2928 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2928 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2452 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2452 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2452 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2452 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2812 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2812 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2812 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2812 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe sc.exe PID 2688 wrote to memory of 2764 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe netsh.exe PID 2688 wrote to memory of 2764 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe netsh.exe PID 2688 wrote to memory of 2764 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe netsh.exe PID 2688 wrote to memory of 2764 2688 d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe netsh.exe PID 2908 wrote to memory of 3028 2908 pnxvvluk.exe svchost.exe PID 2908 wrote to memory of 3028 2908 pnxvvluk.exe svchost.exe PID 2908 wrote to memory of 3028 2908 pnxvvluk.exe svchost.exe PID 2908 wrote to memory of 3028 2908 pnxvvluk.exe svchost.exe PID 2908 wrote to memory of 3028 2908 pnxvvluk.exe svchost.exe PID 2908 wrote to memory of 3028 2908 pnxvvluk.exe svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chlnykou\2⤵
- System Location Discovery: System Language Discovery
PID:1832 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnxvvluk.exe" C:\Windows\SysWOW64\chlnykou\2⤵
- System Location Discovery: System Language Discovery
PID:2000 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create chlnykou binPath= "C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe /d\"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2928 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description chlnykou "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2452 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start chlnykou2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2812 -
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
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2764
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C:\Windows\SysWOW64\chlnykou\pnxvvluk.exeC:\Windows\SysWOW64\chlnykou\pnxvvluk.exe /d"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.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.exesvchost.exe2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:3028
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Modify Registry
2Replay Monitor
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Downloads
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Filesize
11.8MB
MD5b9ec354f32ab40123fecaa6748ccdb5f
SHA1483dcd7a4c1aa3b844d90dc5c3db56871d6e8ea8
SHA256646d27461f1ae7073dd8898e96f12064e968897471d57c5f88a1467015f8102a
SHA51269c0900d9193b8a22c1d170f05379e207df8b4d5eacb382c7836fd2342c0f8dc09ea39689dbfe4615ee1fa192a740e11aadd554f626e77b88ad4676e3bf5cd84