Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
27-05-2021 15:32
Static task
static1
Behavioral task
behavioral1
Sample
PDFViewer.exe
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
PDFViewer.exe
Resource
win10v20210408
windows10_x64
0 signatures
0 seconds
General
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Target
PDFViewer.exe
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Size
564KB
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MD5
0b9f0463a2d36d53505c4911b74c8f08
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SHA1
d5c929cbd199dadaa879fb9368103b11fb68e7fd
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SHA256
f1e52af7310c199ec5d44f16b37b6e4a7eebb3a55de5db292111440fa7d0da47
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SHA512
796e923ae65df8e652387628dccff85d2bfb793c99386aec34c2c6db3482d0bf97fd5586a72b4732b4bef2fe6aabd8e912b5b390068dd590d5d1a57d93f6d924
Score
10/10
Malware Config
Signatures
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RevcodeRat, WebMonitorRat
WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.
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Processes:
resource yara_rule behavioral1/memory/1388-66-0x0000000000400000-0x00000000004F6000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
PDFViewer.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\WebMonitor-3c00 = "C:\\Users\\Admin\\AppData\\Roaming\\WebMonitor-3c00.exe" PDFViewer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WebMonitor-3c00 = "C:\\Users\\Admin\\AppData\\Roaming\\WebMonitor-3c00.exe" PDFViewer.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PDFViewer.exedescription pid process target process PID 1748 set thread context of 1388 1748 PDFViewer.exe PDFViewer.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
PDFViewer.exepid process 1748 PDFViewer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
PDFViewer.exedescription pid process Token: SeShutdownPrivilege 1388 PDFViewer.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
PDFViewer.exePDFViewer.exepid process 1748 PDFViewer.exe 1388 PDFViewer.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
PDFViewer.exedescription pid process target process PID 1748 wrote to memory of 1388 1748 PDFViewer.exe PDFViewer.exe PID 1748 wrote to memory of 1388 1748 PDFViewer.exe PDFViewer.exe PID 1748 wrote to memory of 1388 1748 PDFViewer.exe PDFViewer.exe PID 1748 wrote to memory of 1388 1748 PDFViewer.exe PDFViewer.exe PID 1748 wrote to memory of 1388 1748 PDFViewer.exe PDFViewer.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe"C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe"C:\Users\Admin\AppData\Local\Temp\PDFViewer.exe"2⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1388-62-0x00000000004F4AD0-mapping.dmp
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memory/1388-66-0x0000000000400000-0x00000000004F6000-memory.dmpFilesize
984KB
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memory/1388-67-0x0000000000260000-0x0000000000261000-memory.dmpFilesize
4KB
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memory/1388-68-0x0000000002D30000-0x0000000003D30000-memory.dmpFilesize
16.0MB
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memory/1748-61-0x00000000757E1000-0x00000000757E3000-memory.dmpFilesize
8KB
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memory/1748-65-0x0000000000250000-0x0000000000257000-memory.dmpFilesize
28KB
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memory/1748-64-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB