3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224

Modify Registry

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

Modify Registry

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\software\Wow6432Node\Microsoft\Windows\CurrentVersion\run	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	ioc	process
File opened (read-only)	\??\Y:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\O:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\K:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\J:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\I:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\F:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\V:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\S:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\Q:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\P:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\N:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\M:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\L:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\X:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\T:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\R:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\E:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\Z:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\W:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\U:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\H:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened (read-only)	\??\G:	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	ioc	process
File opened for modification	C:\autorun.inf	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened for modification	C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Drops file in Program Files directory 6 IoCs

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\GROOVE.EXE	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\INFOPATH.EXE	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\MSACCESS.EXE	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\MSPUB.EXE	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\OIS.EXE	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\EXCEL.EXE	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

316 1980 WerFault.exe 3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

pid process

1980 3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

pid	pid_target	process	target process
316	1980	WerFault.exe	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

pid	process
1980	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe

description	pid	process	target process
PID 1980 wrote to memory of 316	1980	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe	WerFault.exe
PID 1980 wrote to memory of 316	1980	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe	WerFault.exe
PID 1980 wrote to memory of 316	1980	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe	WerFault.exe
PID 1980 wrote to memory of 316	1980	3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe
"C:\Users\Admin\AppData\Local\Temp\3f254221ab52cb9aab2dc1053fbdc5d27fbcad3a5002443b2585939b52a71224.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Adds Run key to start application
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 308
2⤵
- Program crash
PID:316

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Hidden Files and Directories

2

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

2

Modify Registry

3

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media