Analysis Overview
SHA256
81b9f8cbef011f498682a359eb362e8ba25fb5cb18a7c6197d5ea22a05ffde04
Threat Level: Known bad
The file cf8263bd95c97a1b5e3932134a9172c5.bin was found to be: Known bad.
Malicious Activity Summary
Vjw0rm
Blocklisted process makes network request
Checks computer location settings
Drops startup file
Adds Run key to start application
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-03-01 01:48
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-01 01:48
Reported
2023-03-01 01:51
Platform
win7-20230220-en
Max time kernel
142s
Max time network
154s
Command Line
Signatures
Vjw0rm
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js | C:\Windows\system32\wscript.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js | C:\Windows\system32\wscript.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run | C:\Windows\system32\wscript.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\QFBMGXAUBF = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js'" | C:\Windows\system32\wscript.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1712 wrote to memory of 540 | N/A | C:\Windows\system32\wscript.exe | C:\Windows\System32\schtasks.exe |
| PID 1712 wrote to memory of 540 | N/A | C:\Windows\system32\wscript.exe | C:\Windows\System32\schtasks.exe |
| PID 1712 wrote to memory of 540 | N/A | C:\Windows\system32\wscript.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js
Network
| Country | Destination | Domain | Proto |
| US | 66.154.102.135:9909 | 66.154.102.135 | tcp |
Files
Analysis: behavioral2
Detonation Overview
Submitted
2023-03-01 01:48
Reported
2023-03-01 01:51
Platform
win10v2004-20230220-en
Max time kernel
145s
Max time network
153s
Command Line
Signatures
Vjw0rm
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation | C:\Windows\system32\wscript.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js | C:\Windows\system32\wscript.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js | C:\Windows\system32\wscript.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows\CurrentVersion\Run | C:\Windows\system32\wscript.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\QFBMGXAUBF = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js'" | C:\Windows\system32\wscript.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2280 wrote to memory of 3992 | N/A | C:\Windows\system32\wscript.exe | C:\Windows\System32\schtasks.exe |
| PID 2280 wrote to memory of 3992 | N/A | C:\Windows\system32\wscript.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\3e61b1cfc096af4b8b8371daaf4f233af9d00286232d16159b3ce77a17f3dba7.js
Network
| Country | Destination | Domain | Proto |
| US | 66.154.102.135:9909 | 66.154.102.135 | tcp |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 135.102.154.66.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.81.184.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 202.74.101.95.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 209.197.3.8:80 | tcp | |
| GB | 51.105.71.137:443 | tcp | |
| US | 8.8.8.8:53 | 176.122.125.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.8.109.52.in-addr.arpa | udp |