Analysis
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max time kernel
130s -
max time network
134s -
platform
windows10-2004_x64 -
resource
win10v2004-20220310-en -
submitted
28-03-2022 15:34
Static task
static1
Behavioral task
behavioral1
Sample
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe
Resource
win7-20220310-en
General
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Target
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe
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Size
670KB
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MD5
cebad7507c9b80980e1f6d9f829a7e41
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SHA1
21a3b8876d3ed54da07825f9696bfb5597c47439
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SHA256
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b
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SHA512
5406f08f884584b88df81e3968b9dc37eb3cf4bccfb3d84dffedb7a421a8166f616d9c0b9d036067a06ac5ae59f3141974ee9759a8df18ebb29e2a618bea5bab
Malware Config
Signatures
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suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon
suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon
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suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon
suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon
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DarkVNC Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3456-141-0x0000000003840000-0x0000000003980000-memory.dmp darkvnc -
Suspicious use of SetThreadContext 1 IoCs
Processes:
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exedescription pid process target process PID 3456 set thread context of 4124 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe WerFault.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exepid process 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exedescription pid process target process PID 3456 wrote to memory of 4124 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe WerFault.exe PID 3456 wrote to memory of 4124 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe WerFault.exe PID 3456 wrote to memory of 4124 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe WerFault.exe PID 3456 wrote to memory of 4124 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe WerFault.exe PID 3456 wrote to memory of 4124 3456 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe WerFault.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3456-134-0x0000000002BE0000-0x0000000003170000-memory.dmpFilesize
5.6MB
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memory/3456-135-0x0000000000400000-0x00000000004AD000-memory.dmpFilesize
692KB
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memory/3456-139-0x0000000000400000-0x00000000004AD000-memory.dmpFilesize
692KB
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memory/3456-140-0x0000000000400000-0x00000000004AD000-memory.dmpFilesize
692KB
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memory/3456-141-0x0000000003840000-0x0000000003980000-memory.dmpFilesize
1.2MB
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memory/4124-138-0x0000000000000000-mapping.dmp