Analysis Overview
SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
Threat Level: Known bad
The file jigsaw was found to be: Known bad.
Malicious Activity Summary
Jigsaw Ransomware
Executes dropped EXE
Adds Run key to start application
Drops file in Program Files directory
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-07-13 10:15
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-13 10:15
Reported
2023-07-13 10:18
Platform
win7-20230712-es
Max time kernel
117s
Max time network
121s
Command Line
Signatures
Jigsaw Ransomware
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1014134971-2480516131-292343513-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" | C:\Users\Admin\AppData\Local\Temp\jigsaw.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\7-Zip\Lang\az.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\he.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\kab.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\Java\jre7\THIRDPARTYLICENSEREADME-JAVAFX.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color48.jpg | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.BusinessApplications.Runtime.xml.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\ResetEnable.dotm.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\hr.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\zh-tw.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\be.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\cs.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\is.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\pa-in.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\uz.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.SharePoint.BusinessData.Administration.Client.xml.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\Office14\SplashScreen.bmp.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\co.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\readme.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\fa.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\lv.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Games\FreeCell\FreeCellMCE.png | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\COPYING.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\EnableGrant.js | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\lij.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\mk.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw120.png | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Internet Explorer\en-US\eula.rtf | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\eo.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\mng.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\nb.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\nn.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\uk.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw48.png | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_48.png | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\FormatUndo.potx | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\bg.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\el.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\gu.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\ast.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\bn.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\io.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\ne.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\sv.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\AUTHORS.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_120.jpg | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\EnableGrant.js.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\pl.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\VideoLAN\VLC\NEWS.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\el.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\ar.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\lt.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows NT\TableTextService\TableTextServiceArray.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\ResolveSelect.xml.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\th.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\Filters.xml | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\readme.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\br.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\fy.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\ko.txt | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\mng2.txt.fun | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\MediaReceiverRegistrar.xml | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw120.jpg | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
| File opened for modification | C:\Program Files\Mozilla Firefox\firefox.VisualElementsManifest.xml | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2504 wrote to memory of 2684 | N/A | C:\Users\Admin\AppData\Local\Temp\jigsaw.exe | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe |
| PID 2504 wrote to memory of 2684 | N/A | C:\Users\Admin\AppData\Local\Temp\jigsaw.exe | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe |
| PID 2504 wrote to memory of 2684 | N/A | C:\Users\Admin\AppData\Local\Temp\jigsaw.exe | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
Network
Files
memory/2504-54-0x0000000001080000-0x00000000010D0000-memory.dmp
memory/2504-56-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2504-55-0x00000000002E0000-0x0000000000318000-memory.dmp
memory/2504-57-0x0000000000AC0000-0x0000000000B40000-memory.dmp
memory/2504-58-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
| MD5 | 2773e3dc59472296cb0024ba7715a64e |
| SHA1 | 27d99fbca067f478bb91cdbcb92f13a828b00859 |
| SHA256 | 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7 |
| SHA512 | 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262 |
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
| MD5 | 2773e3dc59472296cb0024ba7715a64e |
| SHA1 | 27d99fbca067f478bb91cdbcb92f13a828b00859 |
| SHA256 | 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7 |
| SHA512 | 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262 |
memory/2504-65-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2684-66-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2684-67-0x0000000000D10000-0x0000000000D60000-memory.dmp
memory/2684-68-0x0000000000100000-0x0000000000180000-memory.dmp
memory/2684-69-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2684-70-0x000007FEF5760000-0x000007FEF60FD000-memory.dmp
memory/2684-71-0x0000000000100000-0x0000000000180000-memory.dmp
memory/2684-74-0x000000001BB90000-0x000000001BBDE000-memory.dmp