Analysis
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max time kernel
150s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
27-01-2025 18:04
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe
Resource
win7-20240903-en
windows7-x64
16 signatures
150 seconds
General
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Target
JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe
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Size
100KB
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MD5
424b2a616dd1ccfdee1f0e66dcbf18ea
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SHA1
250444322411d022b9e3e30820b460f87c72e719
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SHA256
f392739651133cd206a7697aa3bd48126b66e5a6f918bc8a14321622ad3f85e5
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SHA512
6393aa915d3cfca133bab6fce9fcf88f140a153c087e6e694b1bde87a11d712e2c18a30a417a26361d70171c3c6072a3256c775bc6e634b4e39c5d49e530418b
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SSDEEP
3072:lNDuhNig6LUD3DeCN6xvmBz/gxgGak8jwaaHw7Koj4rD8p2f:lNuF6LdwKALgxJGm
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,C:\\Users\\Admin\\AppData\\Local\\ospnipuk\\wyhavpeb.exe" svchost.exe -
Ramnit family
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UAC bypass 3 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion svchost.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wyhavpeb.exe svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wyhavpeb.exe svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2712 oecuxrdhxfwtoiyt.exe -
Impair Defenses: Safe Mode Boot 1 TTPs 3 IoCs
description ioc Process Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend svchost.exe Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc svchost.exe Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power svchost.exe -
Loads dropped DLL 5 IoCs
pid Process 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\WyhAvpeb = "C:\\Users\\Admin\\AppData\\Local\\ospnipuk\\wyhavpeb.exe" svchost.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 4 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 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language oecuxrdhxfwtoiyt.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe 1704 svchost.exe -
Suspicious behavior: LoadsDriver 1 IoCs
pid Process 476 Process not Found -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe Token: SeDebugPrivilege 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe Token: SeSecurityPrivilege 1652 svchost.exe Token: SeSecurityPrivilege 1704 svchost.exe Token: SeDebugPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeSecurityPrivilege 2712 oecuxrdhxfwtoiyt.exe Token: SeLoadDriverPrivilege 2712 oecuxrdhxfwtoiyt.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe Token: SeBackupPrivilege 1704 svchost.exe Token: SeRestorePrivilege 1704 svchost.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1652 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 28 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 1704 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 29 PID 2420 wrote to memory of 2712 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 30 PID 2420 wrote to memory of 2712 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 30 PID 2420 wrote to memory of 2712 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 30 PID 2420 wrote to memory of 2712 2420 JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_424b2a616dd1ccfdee1f0e66dcbf18ea.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1652
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C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe2⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks BIOS information in registry
- Drops startup file
- Impair Defenses: Safe Mode Boot
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1704
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C:\Users\Admin\AppData\Local\Temp\oecuxrdhxfwtoiyt.exe"C:\Users\Admin\AppData\Local\Temp\oecuxrdhxfwtoiyt.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2712
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
2Disable or Modify Tools
1Safe Mode Boot
1Modify Registry
3Replay Monitor
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Downloads
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Filesize
100KB
MD5424b2a616dd1ccfdee1f0e66dcbf18ea
SHA1250444322411d022b9e3e30820b460f87c72e719
SHA256f392739651133cd206a7697aa3bd48126b66e5a6f918bc8a14321622ad3f85e5
SHA5126393aa915d3cfca133bab6fce9fcf88f140a153c087e6e694b1bde87a11d712e2c18a30a417a26361d70171c3c6072a3256c775bc6e634b4e39c5d49e530418b