Analysis Overview
SHA256
d506a7e9111252495ae25542a3dcc2d0a142447e2499b191bd76098f0f32859c
Threat Level: Known bad
The file bid_05.20.doc was found to be: Known bad.
Malicious Activity Summary
Valak
Process spawned unexpected child process
Valak JavaScript Loader
Loads dropped DLL
JavaScript code in executable
Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Checks processor information in registry
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2020-05-22 16:50
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-05-22 16:50
Reported
2020-05-22 16:53
Platform
win7v200430
Max time kernel
149s
Max time network
158s
Command Line
Signatures
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process | N/A | C:\Windows\system32\regsvr32.exe | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE |
Office loads VBA resources, possible macro or embedded object present
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 748 wrote to memory of 1292 | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | C:\Windows\system32\regsvr32.exe |
| PID 748 wrote to memory of 1292 | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | C:\Windows\system32\regsvr32.exe |
| PID 748 wrote to memory of 1292 | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | C:\Windows\system32\regsvr32.exe |
| PID 748 wrote to memory of 1292 | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | C:\Windows\system32\regsvr32.exe |
| PID 748 wrote to memory of 1292 | N/A | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | C:\Windows\system32\regsvr32.exe |
Processes
C:\Program Files\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\bid_05.20.doc"
C:\Windows\system32\regsvr32.exe
regsvr32 c:\programdata\36586915.dat
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | www.willsterns.com | udp |
| N/A | 107.180.58.72:80 | www.willsterns.com | tcp |
Files
\??\c:\programdata\36586915.dat
| MD5 | 27759b5877264eb385bb1d290296d066 |
| SHA1 | 9bbc815b15c1affcbb7185d993803d9efc890829 |
| SHA256 | 7c0e9f60f353dd3705a96a41980aaf84dead5336420902084e757ca6e3feea18 |
| SHA512 | 5d9dcdce1ddde1b2cedd74b77c59b424b14f5b32ebe0440a1c24168c3b0f1320702a3cacfbf6553da0e230541acbc4aeaaca7ed87c5f97234b2b008df1812bc4 |
Analysis: behavioral2
Detonation Overview
Submitted
2020-05-22 16:50
Reported
2020-05-22 16:53
Platform
win10v200430
Max time kernel
139s
Max time network
137s
Command Line
Signatures
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process | N/A | C:\Windows\SYSTEM32\regsvr32.exe | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE |
Valak
Valak JavaScript Loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regsvr32.exe | N/A |
JavaScript code in executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1740 wrote to memory of 1644 | N/A | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | C:\Windows\SYSTEM32\regsvr32.exe |
| PID 1740 wrote to memory of 1644 | N/A | C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE | C:\Windows\SYSTEM32\regsvr32.exe |
| PID 1644 wrote to memory of 3016 | N/A | C:\Windows\SYSTEM32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1644 wrote to memory of 3016 | N/A | C:\Windows\SYSTEM32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1644 wrote to memory of 3016 | N/A | C:\Windows\SYSTEM32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3016 wrote to memory of 1936 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 3016 wrote to memory of 1936 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 3016 wrote to memory of 1936 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\wscript.exe |
Processes
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\bid_05.20.doc" /o ""
C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 c:\programdata\36586915.dat
C:\Windows\SysWOW64\regsvr32.exe
c:\programdata\36586915.dat
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Public\OuJnXEmSq.OZcyY
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | www.willsterns.com | udp |
| N/A | 107.180.58.72:80 | www.willsterns.com | tcp |
Files
memory/1740-0-0x000001E4E5008000-0x000001E4E500B000-memory.dmp
memory/1740-1-0x000001E4E500B000-0x000001E4E5010000-memory.dmp
memory/1740-2-0x000001E4E500B000-0x000001E4E5010000-memory.dmp
memory/1740-3-0x000001E4E5008000-0x000001E4E500B000-memory.dmp
memory/1740-4-0x000001E4E5159000-0x000001E4E515E000-memory.dmp
memory/1740-5-0x000001E4E5159000-0x000001E4E515E000-memory.dmp
memory/1740-6-0x000001E4E5159000-0x000001E4E515E000-memory.dmp
\??\c:\programdata\36586915.dat
| MD5 | 3acef680d63f6749c2aa4f70290b9711 |
| SHA1 | 03e5346225fdd08cb44326cf502e8f9854301622 |
| SHA256 | d36ed440154bf6ca7839640726071eb4b03364dc39de974a1d0077a6dd55f631 |
| SHA512 | c7c9ba8d879e58e82e80b6def480291869438ccacc88cded1171b27012f22e7ec6823d3f67060be0ab8e2afd24487f3b9d6376edfc76246af0338a133510b82c |
\ProgramData\36586915.dat
| MD5 | 3acef680d63f6749c2aa4f70290b9711 |
| SHA1 | 03e5346225fdd08cb44326cf502e8f9854301622 |
| SHA256 | d36ed440154bf6ca7839640726071eb4b03364dc39de974a1d0077a6dd55f631 |
| SHA512 | c7c9ba8d879e58e82e80b6def480291869438ccacc88cded1171b27012f22e7ec6823d3f67060be0ab8e2afd24487f3b9d6376edfc76246af0338a133510b82c |
C:\Users\Public\OuJnXEmSq.OZcyY
| MD5 | 068586bbe8e155cad3938dc19d742a37 |
| SHA1 | b42234fa85c7bdde8d1e6e2c349e95a02c90bfe7 |
| SHA256 | c9bebbf66481080359a2e4e1de51f5c2ef6973e8f8588d5323e8e4be9ae66647 |
| SHA512 | f670b281e51403eb3f39027059100f476b95a9310af93b86976e974d3d69f031cd392483281a83d32b8f2b27f597161359e249bd9542af692fe3ef1e5f7b5464 |