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Analysis
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max time kernel
149s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
12/10/2024, 07:08
Static task
static1
Behavioral task
behavioral1
Sample
38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe
Resource
win10v2004-20241007-en
General
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Target
38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe
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Size
480KB
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MD5
38f2a8285c0b00b6a7f0bc886a53c343
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SHA1
1b6596648566e7a56d06df152cbb063ab699dd30
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SHA256
1e3d69d6f9ebf78d3b5e56aca294efdfef3ab58d6dafe72a46ff708bdaefbeac
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SHA512
c1bf1abbdf47005a62d5f81460be7a5eef86d8f29a0760e25047ad0e604fc1a0a3382d6d0c89e764636ab67ae9ee75846275fb14665ed54791ae63e508d2202a
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SSDEEP
6144:lYb5LrTtMEcnztMYkqy/lEYdx+aj1tU++bzl8X4icn/L+TooFG6rQKN8Q2ZGStEj:gTPSPNTY/EDEyLiooorKWvEHD
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe" services.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe" 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe -
Adds policy Run key to start application 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe" 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run services.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe" services.exe -
Boot or Logon Autostart Execution: Active Setup 2 TTPs 5 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y} 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\ 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe" 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\ services.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe" services.exe -
resource yara_rule behavioral1/files/0x0009000000015d59-108.dat aspack_v212_v242 -
Deletes itself 1 IoCs
pid Process 876 cmd.exe -
Executes dropped EXE 2 IoCs
pid Process 2612 fservice.exe 2648 services.exe -
Loads dropped DLL 6 IoCs
pid Process 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 2648 services.exe 2648 services.exe 2612 fservice.exe 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe -
Modifies WinLogon 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\ 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\ services.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 3 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe File opened for modification \??\PhysicalDrive0 fservice.exe File opened for modification \??\PhysicalDrive0 services.exe -
Drops file in System32 directory 7 IoCs
description ioc Process File created C:\Windows\SysWOW64\fservice.exe fservice.exe File opened for modification C:\Windows\SysWOW64\fservice.exe fservice.exe File created C:\Windows\SysWOW64\winkey.dll services.exe File created C:\Windows\SysWOW64\reginv.dll services.exe File created C:\Windows\SysWOW64\fservice.exe services.exe File created C:\Windows\SysWOW64\fservice.exe 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe File opened for modification C:\Windows\SysWOW64\fservice.exe 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe -
Drops file in Windows directory 8 IoCs
description ioc Process File created C:\Windows\system\sservice.exe 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe File opened for modification C:\Windows\system\sservice.exe 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe File created C:\Windows\services.exe fservice.exe File opened for modification C:\Windows\services.exe fservice.exe File created C:\Windows\system\sservice.exe fservice.exe File opened for modification C:\Windows\system\sservice.exe fservice.exe File created C:\Windows\system\sservice.exe services.exe File opened for modification C:\Windows\system\sservice.exe services.exe -
System Location Discovery: System Language Discovery 1 TTPs 8 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 NET.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fservice.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language services.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language NET.exe -
Modifies registry class 9 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key fservice.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ fservice.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" fservice.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key services.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ services.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" services.exe -
Runs net.exe
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe 2648 services.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2648 services.exe 2648 services.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 1804 wrote to memory of 2612 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 30 PID 1804 wrote to memory of 2612 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 30 PID 1804 wrote to memory of 2612 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 30 PID 1804 wrote to memory of 2612 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 30 PID 2612 wrote to memory of 2648 2612 fservice.exe 31 PID 2612 wrote to memory of 2648 2612 fservice.exe 31 PID 2612 wrote to memory of 2648 2612 fservice.exe 31 PID 2612 wrote to memory of 2648 2612 fservice.exe 31 PID 2648 wrote to memory of 2184 2648 services.exe 32 PID 2648 wrote to memory of 2184 2648 services.exe 32 PID 2648 wrote to memory of 2184 2648 services.exe 32 PID 2648 wrote to memory of 2184 2648 services.exe 32 PID 2648 wrote to memory of 1944 2648 services.exe 33 PID 2648 wrote to memory of 1944 2648 services.exe 33 PID 2648 wrote to memory of 1944 2648 services.exe 33 PID 2648 wrote to memory of 1944 2648 services.exe 33 PID 1804 wrote to memory of 876 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 36 PID 1804 wrote to memory of 876 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 36 PID 1804 wrote to memory of 876 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 36 PID 1804 wrote to memory of 876 1804 38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe 36 PID 1944 wrote to memory of 2644 1944 NET.exe 38 PID 1944 wrote to memory of 2644 1944 NET.exe 38 PID 1944 wrote to memory of 2644 1944 NET.exe 38 PID 1944 wrote to memory of 2644 1944 NET.exe 38 PID 2184 wrote to memory of 2020 2184 NET.exe 39 PID 2184 wrote to memory of 2020 2184 NET.exe 39 PID 2184 wrote to memory of 2020 2184 NET.exe 39 PID 2184 wrote to memory of 2020 2184 NET.exe 39
Processes
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C:\Users\Admin\AppData\Local\Temp\38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe"1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Boot or Logon Autostart Execution: Active Setup
- Loads dropped DLL
- Modifies WinLogon
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1804 -
C:\Windows\SysWOW64\fservice.exeC:\Windows\system32\fservice.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Windows\services.exeC:\Windows\services.exe -XP3⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Boot or Logon Autostart Execution: Active Setup
- Executes dropped EXE
- Loads dropped DLL
- Modifies WinLogon
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2648 -
C:\Windows\SysWOW64\NET.exeNET STOP srservice4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2184 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 STOP srservice5⤵
- System Location Discovery: System Language Discovery
PID:2020
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C:\Windows\SysWOW64\NET.exeNET STOP navapsvc4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 STOP navapsvc5⤵
- System Location Discovery: System Language Discovery
PID:2644
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C:\Windows\SysWOW64\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\38f2a8285c0b00b6a7f0bc886a53c343_JaffaCakes118.exe.bat2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:876
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Active Setup
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
2Pre-OS Boot
1Bootkit
1Replay Monitor
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Downloads
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Filesize
133B
MD5500a10dd1699bdb0e3c6f27f43f347c3
SHA10a7b286437c685267a45da6393e827ca87274966
SHA25601c42b3757ab6a2a96f3019e0e6283651b1f5ba97a116a6bb7d37609328fa4ac
SHA5128887034f2cab8a1ca95cbfc818492fcdb63b0d86ae98d495ac1555f7e3c6382ffa2bcccce07d0bcde90b4f5df863ee2f82ca423d437ec21e8eca4f3671a4a16b
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Filesize
480KB
MD538f2a8285c0b00b6a7f0bc886a53c343
SHA11b6596648566e7a56d06df152cbb063ab699dd30
SHA2561e3d69d6f9ebf78d3b5e56aca294efdfef3ab58d6dafe72a46ff708bdaefbeac
SHA512c1bf1abbdf47005a62d5f81460be7a5eef86d8f29a0760e25047ad0e604fc1a0a3382d6d0c89e764636ab67ae9ee75846275fb14665ed54791ae63e508d2202a
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Filesize
36KB
MD5562e0d01d6571fa2251a1e9f54c6cc69
SHA183677ad3bc630aa6327253c7b3deffbd4a8ce905
SHA256c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6
SHA512166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea
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Filesize
13KB
MD5b4c72da9fd1a0dcb0698b7da97daa0cd
SHA1b25a79e8ea4c723c58caab83aed6ea48de7ed759
SHA25645d266269634ba2de70f179a26d7224111e677e66b38dff2802851b71ce4458f
SHA512f5f184416c5381d275bc093c9275e9fdb35c58e2c401d188aef097950013de6e43269da5d4dd5e7baea34735bd7de664d15fe487b2292fd66926c9845b0cd066