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Analysis
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max time kernel
150s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22/11/2024, 09:14
Static task
static1
Behavioral task
behavioral1
Sample
f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe
Resource
win10v2004-20241007-en
General
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Target
f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe
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Size
11.0MB
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MD5
3a73e3f5ff0ad1e222cac36e03b9fe66
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SHA1
155126c64e86e8f6830dd377417bd750b3f0b6e3
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SHA256
f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4
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SHA512
b97bd61b89eafacf4e652a8f0ab9b284018d18911f4a5604a4e1ff3d16cbb4d1345265ee226d0dd26d1690fe4e3056ed682c659207b7a60ccd1a0e9ec73abc1c
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SSDEEP
49152:wNxtFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFg:WO
Malware Config
Extracted
tofsee
quadoil.ru
lakeflex.ru
Signatures
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Tofsee family
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Creates new service(s) 2 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2920 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\vdwhgrwl\ImagePath = "C:\\Windows\\SysWOW64\\vdwhgrwl\\iaszypah.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe -
Deletes itself 1 IoCs
pid Process 1480 svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2380 iaszypah.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2380 set thread context of 1480 2380 iaszypah.exe 108 -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 3892 sc.exe 2272 sc.exe 440 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.
description 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 2 IoCs
pid pid_target Process procid_target 2544 3576 WerFault.exe 82 4288 2380 WerFault.exe 100 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language iaszypah.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 svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 3576 wrote to memory of 3208 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 86 PID 3576 wrote to memory of 3208 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 86 PID 3576 wrote to memory of 3208 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 86 PID 3576 wrote to memory of 4596 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 92 PID 3576 wrote to memory of 4596 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 92 PID 3576 wrote to memory of 4596 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 92 PID 3576 wrote to memory of 3892 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 94 PID 3576 wrote to memory of 3892 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 94 PID 3576 wrote to memory of 3892 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 94 PID 3576 wrote to memory of 2272 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 96 PID 3576 wrote to memory of 2272 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 96 PID 3576 wrote to memory of 2272 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 96 PID 3576 wrote to memory of 440 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 98 PID 3576 wrote to memory of 440 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 98 PID 3576 wrote to memory of 440 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 98 PID 3576 wrote to memory of 2920 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 101 PID 3576 wrote to memory of 2920 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 101 PID 3576 wrote to memory of 2920 3576 f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe 101 PID 2380 wrote to memory of 1480 2380 iaszypah.exe 108 PID 2380 wrote to memory of 1480 2380 iaszypah.exe 108 PID 2380 wrote to memory of 1480 2380 iaszypah.exe 108 PID 2380 wrote to memory of 1480 2380 iaszypah.exe 108 PID 2380 wrote to memory of 1480 2380 iaszypah.exe 108
Processes
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C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe"C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3576 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vdwhgrwl\2⤵
- System Location Discovery: System Language Discovery
PID:3208
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iaszypah.exe" C:\Windows\SysWOW64\vdwhgrwl\2⤵
- System Location Discovery: System Language Discovery
PID:4596
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create vdwhgrwl binPath= "C:\Windows\SysWOW64\vdwhgrwl\iaszypah.exe /d\"C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3892
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description vdwhgrwl "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2272
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start vdwhgrwl2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:440
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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
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2920
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3576 -s 10482⤵
- Program crash
PID:2544
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C:\Windows\SysWOW64\vdwhgrwl\iaszypah.exeC:\Windows\SysWOW64\vdwhgrwl\iaszypah.exe /d"C:\Users\Admin\AppData\Local\Temp\f497600b793c965a69df6cbc73af3df664b635fd098e463fab3d9badf0dccea4.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1480
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2380 -s 5202⤵
- Program crash
PID:4288
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3576 -ip 35761⤵PID:1544
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2380 -ip 23801⤵PID:2412
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
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Downloads
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Filesize
10.9MB
MD51ab7a87a54a66e22ac16924d831065e8
SHA131440b5fdff1bd2417e0db41fa46b20de562290d
SHA256ba4dd84c028fd3cc5a763342133b4ae92414aeb19b9ffdd837f7a8a94b57ddf0
SHA512a8df907dda36e512e44b63fa8da32cbc7df4d18001f9169b3b95c8bdf549fdb77cab07417f80252a5de38e3876c8083d8ddf3bc88396d017bf4a083fa5649beb