1402149f18125b8cdc25614808ed447683992446d7281a781a6968c133857f75

Analysis

max time kernel
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/10/2026, 16:50

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General

Target
jaffacakes118_HEUR.Trojan.Win32.Generic.dll
Size 236KB
Sample261009-vclfjsb121
SHA256 1402149f18125b8cdc25614808ed447683992446d7281a781a6968c133857f75
MD5 7e4066079695d85752a8cb696e7fc064
SHA1 972b6704721c740b755e77197181cb36dbb081e8
SHA512 2ad26b63f7eaf134a5774b42c995686f40f60ddd368ee1054894b0ad10f43b0ab79814cf4f34c955ff02afd0511a886d4ea4a3e9979d2363e6b6ddd593382fc3
SSDEEP 3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIg:+Qj9U3jwO3rt57
TLSH
T15434C0107AB8C038F61485B41D792F33D97FAE040B5BA1B7A7E49959DCF1570AE0A32B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\wsyhl = "{0001969d-8889-ddde-999a-88891e1502f2}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1496	rundll32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\rntcg.dll	rundll32.exe
File created	C:\Windows\SysWOW64\jfluy.dll	rundll32.exe
File created	C:\Windows\SysWOW64\rntcg.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0001969d-8889-ddde-999a-88891e1502f2}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0001969d-8889-ddde-999a-88891e1502f2}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0001969d-8889-ddde-999a-88891e1502f2}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0001969d-8889-ddde-999a-88891e1502f2}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0001969d-8889-ddde-999a-88891e1502f2}\InprocServer32\ = "C:\\Windows\\SysWow64\\rntcg.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1496	rundll32.exe
1496	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1496	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1496	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1496	2040	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1496

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

jfluy.dll

Path C:\Windows\SysWOW64\jfluy.dll
Size 498KB
SHA256 bef6c93e44184dd140199b4d2ed97c2347e41373032934223f0c540c6f673a45
MD5 15b915d8be266335bb83a2703acd0f9b
SHA1 b038b61c82efbfbc2bd9ee6eb8c66411d781da8f
SHA512 fc634f101e18a8823a46165c57ad03d5b3367a45ba8587d873c78fd6d3b32cec9e296550752fab98f4cb9c1198d3198b7f787b7850010b811ddce8b6b51a0fb2
SSDEEP 12288:lVdBaJtafOPNyJlpmUPq/Z6SCXYB5/w1ZNt+4l0L+aUshPy6qWBq+umO6266C+yu:RBqafOPNyJlpmUPq/Z6SCXYB5Y1vl0C3
TLSH
T1F6B47D52BA946AB2E9F362B0026E7771122FFDB50B5045C763C01BEEB8655C09F3934B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1496-0-0x0000000000436000-0x0000000000438000-memory.dmp

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memory/1496-3-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/1496-2-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/1496-4-0x0000000000400000-0x0000000000444000-memory.dmp

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