Analysis Overview
SHA256
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b
Threat Level: Known bad
The file 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b was found to be: Known bad.
Malicious Activity Summary
suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon
DarkVNC
suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon
DarkVNC Payload
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: MapViewOfSection
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-28 15:34
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-28 15:34
Reported
2022-03-28 17:24
Platform
win7-20220310-en
Max time kernel
4294183s
Max time network
127s
Command Line
Signatures
DarkVNC
suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon
suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon
DarkVNC Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1704 set thread context of 2000 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
Enumerates physical storage devices
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe
"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe
Network
| Country | Destination | Domain | Proto |
| DE | 45.147.229.254:443 | tcp | |
| DE | 45.147.229.254:443 | tcp |
Files
memory/1704-54-0x00000000750C1000-0x00000000750C3000-memory.dmp
memory/1704-55-0x0000000002580000-0x0000000002B10000-memory.dmp
memory/1704-56-0x0000000000400000-0x00000000004AD000-memory.dmp
memory/1704-59-0x0000000010000000-0x0000000010089000-memory.dmp
memory/2000-62-0x0000000000000000-mapping.dmp
memory/1704-63-0x0000000000400000-0x00000000004AD000-memory.dmp
memory/1704-64-0x00000000030C0000-0x0000000003200000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-28 15:34
Reported
2022-03-28 17:24
Platform
win10v2004-20220310-en
Max time kernel
130s
Max time network
134s
Command Line
Signatures
DarkVNC
suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon
suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon
DarkVNC Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3456 set thread context of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
Enumerates physical storage devices
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3456 wrote to memory of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
| PID 3456 wrote to memory of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
| PID 3456 wrote to memory of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
| PID 3456 wrote to memory of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
| PID 3456 wrote to memory of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe | C:\Windows\system32\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe
"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | licensing.mp.microsoft.com | udp |
| US | 20.223.25.224:443 | licensing.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | storesdk.dsx.mp.microsoft.com | udp |
| FR | 2.18.109.224:443 | storesdk.dsx.mp.microsoft.com | tcp |
| US | 20.223.25.224:443 | licensing.mp.microsoft.com | tcp |
| US | 20.223.25.224:443 | licensing.mp.microsoft.com | tcp |
| US | 20.223.25.224:443 | licensing.mp.microsoft.com | tcp |
| DE | 45.147.229.254:443 | tcp | |
| DE | 45.147.229.254:443 | tcp | |
| FR | 2.22.22.73:80 | tcp |
Files
memory/3456-134-0x0000000002BE0000-0x0000000003170000-memory.dmp
memory/3456-135-0x0000000000400000-0x00000000004AD000-memory.dmp
memory/4124-138-0x0000000000000000-mapping.dmp
memory/3456-139-0x0000000000400000-0x00000000004AD000-memory.dmp
memory/3456-140-0x0000000000400000-0x00000000004AD000-memory.dmp
memory/3456-141-0x0000000003840000-0x0000000003980000-memory.dmp