Analysis
-
max time kernel
151s -
max time network
72s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
18-05-2021 07:46
Static task
static1
Behavioral task
behavioral1
Sample
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe
Resource
win10v20210408
General
-
Target
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe
-
Size
921KB
-
MD5
a6bc550cccae4bd87b19a20e60ddf3cd
-
SHA1
52d0323eb600d1d259b8bc8cf468f8b6fc3e2afb
-
SHA256
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989
-
SHA512
8317a71fa9608ecf45b118ea73241bc35ae250d5ba2909927202e74423341f2ac0b78a4c0b2e9edb917e3aa6675823f5f3321105b4d61880503388acbc50caad
Malware Config
Signatures
-
Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Drops file in Drivers directory 2 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process File created C:\Windows\SysWOW64\drivers\spools.exe 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened for modification C:\Windows\SysWOW64\drivers\spools.exe 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Sets service image path in registry 2 TTPs
-
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process File opened (read-only) \??\F: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\S: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\V: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\X: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\U: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\H: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\K: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\O: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\T: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\L: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\P: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\Q: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\W: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\M: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\N: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\R: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\E: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\G: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\I: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe File opened (read-only) \??\J: 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
-
Modifies WinLogon 2 TTPs 1 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Modifies registry class 1 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exedescription pid process target process PID 1200 wrote to memory of 1224 1200 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe reg.exe PID 1200 wrote to memory of 1224 1200 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe reg.exe PID 1200 wrote to memory of 1224 1200 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe reg.exe PID 1200 wrote to memory of 1224 1200 02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe reg.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe"C:\Users\Admin\AppData\Local\Temp\02a39d6d502692e9a7d0be32ec1fa3d2d19d4c29e0d5631aea080e6aa7e76989.exe"1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- Enumerates connected drives
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\reg.exereg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f2⤵