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Analysis
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max time kernel
144s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
28/01/2025, 05:53
Static task
static1
Behavioral task
behavioral1
Sample
2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe
Resource
win10v2004-20241007-en
General
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Target
2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe
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Size
14.1MB
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MD5
a707de5d5c4e2813b31ab8cfa03e2b09
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SHA1
56f59963bde1d6f1ea8f3f1349f1b4855728c1c0
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SHA256
2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749
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SHA512
2c5eb637d20c92f02621b2e16dd15fa38db91467a1a76cf381ff04ef6bd05a41931dac298cb92b5e7eefb453f6ded8a5d363082cb8ba5e57adffbcdc4bc40860
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SSDEEP
3072:aMFPx8ZeNPqKsjN2VqfrHJpx5uXvw9oXU6L3w4WtWtWtWtWtWtWtWtWtWtWtWtWw:a06ZeNi5jNAqjHJpx5OI9oXjL
Malware Config
Extracted
tofsee
vanaheim.cn
jotunheim.name
Signatures
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Tofsee family
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Windows security bypass 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ozbapzcl = "0" svchost.exe -
Creates new service(s) 2 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2656 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ozbapzcl\ImagePath = "C:\\Windows\\SysWOW64\\ozbapzcl\\ugolreki.exe" svchost.exe -
Deletes itself 1 IoCs
pid Process 2848 svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2860 ugolreki.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2860 set thread context of 2848 2860 ugolreki.exe 41 -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 2348 sc.exe 2764 sc.exe 2876 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 queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe Key opened \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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.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 sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ugolreki.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2008 wrote to memory of 2528 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 30 PID 2008 wrote to memory of 2528 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 30 PID 2008 wrote to memory of 2528 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 30 PID 2008 wrote to memory of 2528 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 30 PID 2008 wrote to memory of 1496 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 32 PID 2008 wrote to memory of 1496 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 32 PID 2008 wrote to memory of 1496 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 32 PID 2008 wrote to memory of 1496 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 32 PID 2008 wrote to memory of 2348 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 34 PID 2008 wrote to memory of 2348 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 34 PID 2008 wrote to memory of 2348 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 34 PID 2008 wrote to memory of 2348 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 34 PID 2008 wrote to memory of 2764 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 36 PID 2008 wrote to memory of 2764 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 36 PID 2008 wrote to memory of 2764 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 36 PID 2008 wrote to memory of 2764 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 36 PID 2008 wrote to memory of 2876 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 38 PID 2008 wrote to memory of 2876 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 38 PID 2008 wrote to memory of 2876 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 38 PID 2008 wrote to memory of 2876 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 38 PID 2860 wrote to memory of 2848 2860 ugolreki.exe 41 PID 2860 wrote to memory of 2848 2860 ugolreki.exe 41 PID 2860 wrote to memory of 2848 2860 ugolreki.exe 41 PID 2860 wrote to memory of 2848 2860 ugolreki.exe 41 PID 2860 wrote to memory of 2848 2860 ugolreki.exe 41 PID 2860 wrote to memory of 2848 2860 ugolreki.exe 41 PID 2008 wrote to memory of 2656 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 42 PID 2008 wrote to memory of 2656 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 42 PID 2008 wrote to memory of 2656 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 42 PID 2008 wrote to memory of 2656 2008 2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe 42
Processes
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C:\Users\Admin\AppData\Local\Temp\2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe"C:\Users\Admin\AppData\Local\Temp\2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2008 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ozbapzcl\2⤵
- System Location Discovery: System Language Discovery
PID:2528
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ugolreki.exe" C:\Windows\SysWOW64\ozbapzcl\2⤵
- System Location Discovery: System Language Discovery
PID:1496
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create ozbapzcl binPath= "C:\Windows\SysWOW64\ozbapzcl\ugolreki.exe /d\"C:\Users\Admin\AppData\Local\Temp\2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2348
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description ozbapzcl "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2764
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start ozbapzcl2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2876
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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:2656
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C:\Windows\SysWOW64\ozbapzcl\ugolreki.exeC:\Windows\SysWOW64\ozbapzcl\ugolreki.exe /d"C:\Users\Admin\AppData\Local\Temp\2f9c9ce20410a27d2b9c6b75821899812daf14d07aa20b877c661cee71beb749.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2848
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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
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
12.8MB
MD5dc4f2969a6564ed4a24adb9279837aa0
SHA18b696225e36cfae213b79fd1569f8fcccccd7698
SHA256ffbe0b952347ce7ecc57e476c1df4b57bebb3809ee29577d46819e0e04195150
SHA51249384be8807dcdc873ee3086dd31694e4c1d3b3109fb58f662a6e2f4860bfe80291c092d6b615a118e9d2c873f660cabfc113bf67e41f8383a33d2e1f2cfe0b1