Analysis
-
max time kernel
153s -
max time network
157s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
18-05-2021 11:17
Static task
static1
Behavioral task
behavioral1
Sample
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe
Resource
win10v20210410
General
-
Target
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe
-
Size
954KB
-
MD5
a997652bf146ad1fa8cc3a9d47c2fe27
-
SHA1
ab58ef82933d772f0f0ca569cccad4cb581a73bb
-
SHA256
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8
-
SHA512
b984ae51fc5f5d9184acf7ef9ba4329ca696668503c4c8b167a537b166b450a2f1a6cada7d15461e2ba0aefaa1c5294ecfa17cf78c9345fd87a5a612b0ac8f87
Malware Config
Signatures
-
Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe -
Drops file in Drivers directory 2 IoCs
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process File opened for modification C:\Windows\SysWOW64\drivers\spools.exe ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File created C:\Windows\SysWOW64\drivers\spools.exe ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe -
Sets service image path in registry 2 TTPs
-
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe -
Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process File opened (read-only) \??\L: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\N: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\E: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\H: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\I: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\K: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\Q: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\R: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\S: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\W: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\F: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\G: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\J: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\O: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\U: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\V: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\X: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\M: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\P: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe File opened (read-only) \??\T: ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.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:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe -
Modifies registry class 1 IoCs
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exedescription pid process target process PID 1924 wrote to memory of 1324 1924 ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe reg.exe PID 1924 wrote to memory of 1324 1924 ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe reg.exe PID 1924 wrote to memory of 1324 1924 ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe reg.exe PID 1924 wrote to memory of 1324 1924 ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe reg.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.exe"C:\Users\Admin\AppData\Local\Temp\ba703fb63d79320b785f8a49bdd659c1d08ac79f76319de62dd8ecb6c90ad5f8.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⤵