Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
26/10/2026, 17:52
General
- Target 20a4b8bb2191e6c95c01473e9d36affe2d293f1ee56839b4a64a5a21e8157a92.dll
- Size 5.0MB
- Sample261026-wf5h9sbf39
- SHA256 20a4b8bb2191e6c95c01473e9d36affe2d293f1ee56839b4a64a5a21e8157a92
Malware Config
Signatures
- Family: Wannacry
WannaCry is a ransomware cryptoworm.
- Modifies firewall policy service 3 TTPs 4 IoCs
- Contacts a large (3301) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Executes dropped EXE 2 IoCs
- Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- Drops file in Windows directory 3 IoCs
- Program crash 1 IoCs
- Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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.
- Modifies data under HKEY_USERS 5 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: MapViewOfSection 1 TTPs 64 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\20a4b8bb2191e6c95c01473e9d36affe2d293f1ee56839b4a64a5a21e8157a92.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\20a4b8bb2191e6c95c01473e9d36affe2d293f1ee56839b4a64a5a21e8157a92.dll,#12⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Modifies firewall policy service
- Executes dropped EXE
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 14564⤵
- Program crash
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4760 -ip 47601⤵
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Create or Modify System Process
1Windows Service
1Process Injection
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Process Injection
1Replay Monitor
Loading Replay Monitor...
Downloads
mssecsvc.exe
memory/4264-12-0x0000000000400000-0x0000000000A79000-memory.dmp
memory/4264-33-0x0000000000400000-0x0000000000A79000-memory.dmp
memory/4760-13-0x000000007FE80000-0x000000007FE8C000-memory.dmp
memory/4760-7-0x0000000077C28000-0x0000000077C29000-memory.dmp
memory/4760-9-0x000000007FE90000-0x000000007FE9C000-memory.dmp
memory/4760-10-0x000000007FE90000-0x000000007FE9C000-memory.dmp
memory/4760-8-0x0000000077C29000-0x0000000077C2A000-memory.dmp
memory/4760-6-0x000000007FE90000-0x000000007FE9C000-memory.dmp
memory/4760-14-0x000000007FE80000-0x000000007FE8C000-memory.dmp
memory/4760-15-0x000000007FE80000-0x000000007FE8C000-memory.dmp
memory/4760-16-0x000000007FE80000-0x000000007FE8C000-memory.dmp
memory/4760-17-0x000000007FE90000-0x000000007FE9C000-memory.dmp
memory/4760-25-0x000000007FE80000-0x000000007FE8C000-memory.dmp
memory/4760-32-0x0000000000400000-0x0000000000A79000-memory.dmp
memory/4760-5-0x0000000000400000-0x0000000000A79000-memory.dmp