Analysis
-
max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03-09-2024 10:06
Static task
static1
Behavioral task
behavioral1
Sample
78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe
Resource
win10v2004-20240802-en
General
-
Target
78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe
-
Size
11.3MB
-
MD5
e465df146e4a00ed2e4a0d941003a13c
-
SHA1
451f1f0877d638646261a730de87929f01debf68
-
SHA256
78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5
-
SHA512
39151020dc52e537ae0333a2a317f70406f9da72fb9013fd49358cb71a39fabc5c267e0fb19d2e28dc2fa221b218857b9dc03320f64b03e99fb31a615cc06983
-
SSDEEP
3072:NoiqjV0QCeV75zMwb2EfDXTBrt0c5f+Z7ApWt+0krytpObPUfAGM4H1M4CjiJNx4:NoiqjWHeV9zthDjBrmA+VkDbSAgQiTx
Malware Config
Extracted
tofsee
defeatwax.ru
refabyd.info
Signatures
-
Creates new service(s) 2 TTPs
-
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 3696 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\ybexaaft\ImagePath = "C:\\Windows\\SysWOW64\\ybexaaft\\pnxvvluk.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe -
Deletes itself 1 IoCs
Processes:
svchost.exepid process 1844 svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
pnxvvluk.exepid process 632 pnxvvluk.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
pnxvvluk.exedescription pid process target process PID 632 set thread context of 1844 632 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 4176 sc.exe 1852 sc.exe 856 sc.exe -
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.
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 -
Program crash 6 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exepid pid_target process target process 4360 3384 WerFault.exe 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe 1816 3384 WerFault.exe 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe 1456 3384 WerFault.exe 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe 1328 632 WerFault.exe pnxvvluk.exe 1980 632 WerFault.exe pnxvvluk.exe 3776 632 WerFault.exe pnxvvluk.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.exe78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.execmd.execmd.exesc.exesc.exenetsh.exepnxvvluk.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 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.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 sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language pnxvvluk.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exepnxvvluk.exedescription pid process target process PID 3384 wrote to memory of 4080 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe cmd.exe PID 3384 wrote to memory of 4080 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe cmd.exe PID 3384 wrote to memory of 4080 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe cmd.exe PID 3384 wrote to memory of 4432 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe cmd.exe PID 3384 wrote to memory of 4432 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe cmd.exe PID 3384 wrote to memory of 4432 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe cmd.exe PID 3384 wrote to memory of 4176 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 4176 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 4176 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 1852 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 1852 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 1852 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 856 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 856 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 856 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe sc.exe PID 3384 wrote to memory of 3696 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe netsh.exe PID 3384 wrote to memory of 3696 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe netsh.exe PID 3384 wrote to memory of 3696 3384 78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe netsh.exe PID 632 wrote to memory of 1844 632 pnxvvluk.exe svchost.exe PID 632 wrote to memory of 1844 632 pnxvvluk.exe svchost.exe PID 632 wrote to memory of 1844 632 pnxvvluk.exe svchost.exe PID 632 wrote to memory of 1844 632 pnxvvluk.exe svchost.exe PID 632 wrote to memory of 1844 632 pnxvvluk.exe svchost.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe"C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3384 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ybexaaft\2⤵
- System Location Discovery: System Language Discovery
PID:4080 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnxvvluk.exe" C:\Windows\SysWOW64\ybexaaft\2⤵
- System Location Discovery: System Language Discovery
PID:4432 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create ybexaaft binPath= "C:\Windows\SysWOW64\ybexaaft\pnxvvluk.exe /d\"C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4176 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description ybexaaft "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1852 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start ybexaaft2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:856 -
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:3696 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 6762⤵
- Program crash
PID:4360 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 12762⤵
- Program crash
PID:1816 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 5962⤵
- Program crash
PID:1456
-
C:\Windows\SysWOW64\ybexaaft\pnxvvluk.exeC:\Windows\SysWOW64\ybexaaft\pnxvvluk.exe /d"C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:632 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1844 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 632 -s 5162⤵
- Program crash
PID:1328 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 632 -s 5242⤵
- Program crash
PID:1980 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 632 -s 5362⤵
- Program crash
PID:3776
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3384 -ip 33841⤵PID:2160
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3384 -ip 33841⤵PID:3200
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3384 -ip 33841⤵PID:4604
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 632 -ip 6321⤵PID:1052
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 632 -ip 6321⤵PID:1472
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 632 -ip 6321⤵PID:2008
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
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
10.3MB
MD56e0f0e792b3bbf974fbf995eb5839531
SHA1e3c073e378c9c4622af0e7c5e0fc920ca5595879
SHA2569d747944c0164ae7d7be3505b69131934abe1cd11a56fb9d52a170e54abcbf07
SHA51280f30a064803618fb749424e6731f68ddea3431544aac9a3b9886b6598f4ea22013b02b1b343768b533a5138733a616f57004a91fa32f1736d86a2003cd5c953