Analysis
- max time kernel
150s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
24/09/2026, 06:35
General
- Target jaffacakes118_5e521458637e7524675bb3f5039bd54417bdcd9b9ca88ff478fc4595a756c6af.exe
- Size 945KB
- Sample260924-hcshmsty3p
- SHA256 5e521458637e7524675bb3f5039bd54417bdcd9b9ca88ff478fc4595a756c6af
Malware Config
Extracted
-
darkcomet
-
Guest16
-
walido.no-ip.biz:1604
-
DC_MUTEX-F54S21D
-
InstallPath
Windupdt\JavaRuntime.exe
-
gencode
h9*q9c8$oXP4
-
install
true
-
offline_keylogger
true
-
persistence
false
-
reg_key
JavaRuntime
Signatures
- Family: Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Modifies firewall policy service 3 TTPs 3 IoCs
- Windows security bypass 2 TTPs 2 IoCs
- Disables RegEdit via registry modification 1 IoCs
- Disables Task Manager via registry modification
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
- Drops file in System32 directory 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- 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.
- Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 48 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_5e521458637e7524675bb3f5039bd54417bdcd9b9ca88ff478fc4595a756c6af.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_5e521458637e7524675bb3f5039bd54417bdcd9b9ca88ff478fc4595a756c6af.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\JavaRuntime.exeC:\Users\Admin\AppData\Local\Temp/JavaRuntime.exe2⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Executes dropped EXE
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\notepad.exenotepad3⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 884⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"3⤵
- Modifies firewall policy service
- Windows security bypass
- Disables RegEdit via registry modification
- Checks BIOS information in registry
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\notepad.exeC:\Windows\SysWOW64\notepad.exe4⤵
- System Location Discovery: System Language Discovery
-
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4876 -ip 48761⤵
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Modify Registry
4Replay Monitor
Loading Replay Monitor...
Downloads
JavaRuntime.exe
memory/2464-9-0x0000000002330000-0x0000000002331000-memory.dmp
memory/2464-10-0x00000000131E2000-0x00000000131E4000-memory.dmp
memory/2464-15-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3448-19-0x0000000000C50000-0x0000000000C51000-memory.dmp
memory/4476-22-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-14-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-21-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-20-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-12-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-18-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-17-0x0000000001170000-0x0000000001171000-memory.dmp
memory/4476-16-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-13-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4476-24-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4876-11-0x00000000012E0000-0x00000000012E1000-memory.dmp
memory/5952-0-0x0000000000400000-0x00000000004A6000-memory.dmp