Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
05-01-2025 18:07
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe
Resource
win10v2004-20241007-en
General
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Target
JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe
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Size
13.6MB
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MD5
b5b559ae20ec80c26ec50afd2d077f53
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SHA1
4553fc5937302711ee5e74a881c7fd4acd119e5b
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SHA256
072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd
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SHA512
dadb525483641f1574c5efcb48cc2c1333d34145b1b7e6386afa9f3e64db7ce45bbe4fc70f2656a997ec42e839bc73cb4c641bd97061e95d712c476f5573cdfd
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SSDEEP
196608:aI+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++2:a
Malware Config
Extracted
tofsee
defeatwax.ru
refabyd.info
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 4608 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\iskuhbsa\ImagePath = "C:\\Windows\\SysWOW64\\iskuhbsa\\tfrzzkzh.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe -
Deletes itself 1 IoCs
pid Process 1788 svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3192 tfrzzkzh.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3192 set thread context of 1788 3192 tfrzzkzh.exe 100 -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 4572 sc.exe 4684 sc.exe 1708 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 760 4296 WerFault.exe 82 4356 3192 WerFault.exe 93 -
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 svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.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 netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tfrzzkzh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 4296 wrote to memory of 4840 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 83 PID 4296 wrote to memory of 4840 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 83 PID 4296 wrote to memory of 4840 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 83 PID 4296 wrote to memory of 2156 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 85 PID 4296 wrote to memory of 2156 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 85 PID 4296 wrote to memory of 2156 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 85 PID 4296 wrote to memory of 4572 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 87 PID 4296 wrote to memory of 4572 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 87 PID 4296 wrote to memory of 4572 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 87 PID 4296 wrote to memory of 4684 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 89 PID 4296 wrote to memory of 4684 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 89 PID 4296 wrote to memory of 4684 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 89 PID 4296 wrote to memory of 1708 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 91 PID 4296 wrote to memory of 1708 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 91 PID 4296 wrote to memory of 1708 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 91 PID 4296 wrote to memory of 4608 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 94 PID 4296 wrote to memory of 4608 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 94 PID 4296 wrote to memory of 4608 4296 JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe 94 PID 3192 wrote to memory of 1788 3192 tfrzzkzh.exe 100 PID 3192 wrote to memory of 1788 3192 tfrzzkzh.exe 100 PID 3192 wrote to memory of 1788 3192 tfrzzkzh.exe 100 PID 3192 wrote to memory of 1788 3192 tfrzzkzh.exe 100 PID 3192 wrote to memory of 1788 3192 tfrzzkzh.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4296 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iskuhbsa\2⤵
- System Location Discovery: System Language Discovery
PID:4840
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfrzzkzh.exe" C:\Windows\SysWOW64\iskuhbsa\2⤵
- System Location Discovery: System Language Discovery
PID:2156
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create iskuhbsa binPath= "C:\Windows\SysWOW64\iskuhbsa\tfrzzkzh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4572
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description iskuhbsa "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4684
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start iskuhbsa2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1708
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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:4608
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 12162⤵
- Program crash
PID:760
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C:\Windows\SysWOW64\iskuhbsa\tfrzzkzh.exeC:\Windows\SysWOW64\iskuhbsa\tfrzzkzh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5b559ae20ec80c26ec50afd2d077f53.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3192 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1788
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3192 -s 5122⤵
- Program crash
PID:4356
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4296 -ip 42961⤵PID:3124
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3192 -ip 31921⤵PID:3168
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
13.0MB
MD515fc21a0fb75463e854199eb1ad1a837
SHA1ad09527bbabf8cf0ff73d1a71390ed2c92535455
SHA256464a0a05399666c43bad8ee8104e734fd7e77d4d3b3858e4cbfa57d7e3167b46
SHA512770658429db46e07e727a9feac040a8aa493f8702a652aa01d0371ad2383e9a8824f4933fab13b9788224baffb672b05a1f36726a82a2b95016750ad348a8756