Analysis
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max time kernel
149s -
max time network
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platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
04-01-2025 02:07
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_76fd745244f1420a3b1338a3709fd455.dll
Resource
win7-20240903-en
General
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Target
JaffaCakes118_76fd745244f1420a3b1338a3709fd455.dll
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Size
116KB
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MD5
76fd745244f1420a3b1338a3709fd455
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SHA1
3a6af036016fc499583d90e4611f622c8962d5fe
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SHA256
c8bc6651de1459d928ca200e5e0f25b6218ad08cafb06e5b116504d53202d7b9
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SHA512
d69cea2916532d19b34686958bc05136c1b3281f9039f3a10b4cad51ac453b14f38fd7c6dfa673f6711ed284df55f1a4831b47b073d9573972a6faffbc53f3ab
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SSDEEP
3072:BswCMwrAhFKa+jtcMKPaMiAyAKbDamrDf6:OMhF/+BMqAWa4Df
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\\rekmrlgr\\akyyclpi.exe" svchost.exe -
Ramnit family
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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\akyyclpi.exe svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\akyyclpi.exe svchost.exe -
Executes dropped EXE 2 IoCs
pid Process 2832 dzjR6md 2760 rpwtenrnuntakuwm.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 6 IoCs
pid Process 2612 regsvr32.exe 2612 regsvr32.exe 2832 dzjR6md 2832 dzjR6md 2832 dzjR6md 2832 dzjR6md -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\AkyYclpi = "C:\\Users\\Admin\\AppData\\Local\\rekmrlgr\\akyyclpi.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 5 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 svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rpwtenrnuntakuwm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dzjR6md -
Modifies registry class 10 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_76fd745244f1420a3b1338a3709fd455.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\ = "atconc 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52A2318-099E-4B66-A757-9B60BEF40C23}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe 2684 svchost.exe -
Suspicious behavior: LoadsDriver 1 IoCs
pid Process 472 Process not Found -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 2832 dzjR6md Token: SeDebugPrivilege 2832 dzjR6md Token: SeSecurityPrivilege 2992 svchost.exe Token: SeSecurityPrivilege 2684 svchost.exe Token: SeDebugPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeSecurityPrivilege 2760 rpwtenrnuntakuwm.exe Token: SeLoadDriverPrivilege 2760 rpwtenrnuntakuwm.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe Token: SeBackupPrivilege 2684 svchost.exe Token: SeRestorePrivilege 2684 svchost.exe -
Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2016 wrote to memory of 2612 2016 regsvr32.exe 31 PID 2612 wrote to memory of 2832 2612 regsvr32.exe 32 PID 2612 wrote to memory of 2832 2612 regsvr32.exe 32 PID 2612 wrote to memory of 2832 2612 regsvr32.exe 32 PID 2612 wrote to memory of 2832 2612 regsvr32.exe 32 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2992 2832 dzjR6md 33 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2684 2832 dzjR6md 34 PID 2832 wrote to memory of 2760 2832 dzjR6md 35 PID 2832 wrote to memory of 2760 2832 dzjR6md 35 PID 2832 wrote to memory of 2760 2832 dzjR6md 35 PID 2832 wrote to memory of 2760 2832 dzjR6md 35
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_76fd745244f1420a3b1338a3709fd455.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2016 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_76fd745244f1420a3b1338a3709fd455.dll2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Users\Admin\AppData\Local\Temp\dzjR6md"dzjR6md"3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2832 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2992
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C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe4⤵
- 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:2684
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C:\Users\Admin\AppData\Local\Temp\rpwtenrnuntakuwm.exe"C:\Users\Admin\AppData\Local\Temp\rpwtenrnuntakuwm.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2760
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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
Loading Replay Monitor...
Downloads
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Filesize
96KB
MD5254e4fa9c285f829b8134f470bbd08b9
SHA1c6198611124c86c8d13204bd84c20fa41f8a9f20
SHA256c271fd76007d951f28e3fa435d543530c4a6adaf1ad928841ffc99767da5ce57
SHA512f5d1aa083731b410cc2dd9eacab10c065ee4ea7ecb56ce74dafc68439451254649b6d0db60626f7f6a9eae8ca65b94fd73d86eb75793fb647e6f7e0804b128e9