Analysis
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max time kernel
4s -
max time network
6s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17/10/2024, 01:54
Static task
static1
Behavioral task
behavioral1
Sample
503b154050ce76040ccb90509af08ded_JaffaCakes118.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
503b154050ce76040ccb90509af08ded_JaffaCakes118.exe
Resource
win10v2004-20241007-en
Errors
General
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Target
503b154050ce76040ccb90509af08ded_JaffaCakes118.exe
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Size
2.9MB
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MD5
503b154050ce76040ccb90509af08ded
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SHA1
852915fe0319821b44c14d0d8c3a888fa4345d57
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SHA256
b5f3f9c38941a80a482fec7f66183828add12d9115c824b78c89ffbaae951996
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SHA512
5a31418b3e7c1b27e910a6f664252c30d502cb550df943cef10893c1980df77ff1e06a6a0649cd8f0ab2e6c0e4fc754c4b6a8a3e508c26d00824d8ca58c2eabb
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SSDEEP
3072:/BvoI005zo/QmqkeYwlun+hCzqr1L8g/JcY4g0mp:ll5zo/QfP+Chwg/2g9
Malware Config
Signatures
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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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation 503b154050ce76040ccb90509af08ded_JaffaCakes118.exe -
Executes dropped EXE 2 IoCs
pid Process 5004 mbr-locker.exe 4908 sys3.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 mbr-locker.exe File opened for modification \??\PHYSICALDRIVE0 sys3.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 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 503b154050ce76040ccb90509af08ded_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language mbr-locker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sys3.exe -
Modifies data under HKEY_USERS 15 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "226" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" LogonUI.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeShutdownPrivilege 4908 sys3.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 560 LogonUI.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3548 wrote to memory of 5004 3548 503b154050ce76040ccb90509af08ded_JaffaCakes118.exe 84 PID 3548 wrote to memory of 5004 3548 503b154050ce76040ccb90509af08ded_JaffaCakes118.exe 84 PID 3548 wrote to memory of 5004 3548 503b154050ce76040ccb90509af08ded_JaffaCakes118.exe 84 PID 5004 wrote to memory of 4908 5004 mbr-locker.exe 85 PID 5004 wrote to memory of 4908 5004 mbr-locker.exe 85 PID 5004 wrote to memory of 4908 5004 mbr-locker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\503b154050ce76040ccb90509af08ded_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\503b154050ce76040ccb90509af08ded_JaffaCakes118.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3548 -
C:\Users\Admin\AppData\Local\Temp\mbr-locker.exe"C:\Users\Admin\AppData\Local\Temp\mbr-locker.exe"2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5004 -
C:\Users\Admin\AppData\Local\Temp\sys3.exeC:\Users\Admin\AppData\Local\Temp\\sys3.exe3⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4908
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa3980855 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:560
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
273KB
MD5f907909c1e30c3e839096e7d4d090b2c
SHA10a99db4e4374dadbfb22610e826e68d3aa3fc376
SHA256f31e5d50d7af3d92ce22acf0170943e2d825de609043ffbb8a7dd81c40a9fa9d
SHA512583481e0f239587cd39c14fc4496137ffb8fdd58d8b7f37eb0fc6c720faf770aa6f9b6f1ba323e916536ff7f4594379004de3462150da973e9155b36cb65598f
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Filesize
48B
MD555a6c5e8b47dc0777cf286fa1b3970d2
SHA1c6b51d0028b78e0a5bb019285b14e3d25478632a
SHA2565389ea291b867e7beed8516a9d534fdd91bfc3802512d5bd4b7823b702ba130c
SHA512d5bc859ce5592a48ac708810d7240df448c860c97f98819b4cb45cd661365946ed31553a0c017e3dd1540915b98291561e184b273f7880ff112b6fad62846782