Analysis
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max time kernel
37s -
platform
windows11-21h2_x64 -
resource
win11-20240802-en -
resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-08-2024 01:14
Static task
static1
Behavioral task
behavioral1
Sample
Jigsaw.exe
Resource
win11-20240802-en
General
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Target
Jigsaw.exe
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Size
283KB
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MD5
2773e3dc59472296cb0024ba7715a64e
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SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859
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SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
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SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262
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SSDEEP
6144:7fukPLPvucHiQQQ4uuy9ApZbZWxcZt+kTfMLJTOAZiYSXjjeqXus:7fu5cCT7yYlWi8kTfMLJTOAZiYSXjyqX
Malware Config
Signatures
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Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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Renames multiple (224) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
Processes:
drpbx.exepid Process 1880 drpbx.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Jigsaw.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" Jigsaw.exe -
Drops file in Program Files directory 64 IoCs
Processes:
drpbx.exedescription ioc Process File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00C1-0409-1000-0000000FF1CE.xml drpbx.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifestLoc.16.en-us.xml.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.NET.Native.Runtime.2.2_2.2.28604.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\CortanaCommands.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_1.0.38.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File created C:\Program Files\7-Zip\Lang\uk.txt.fun drpbx.exe File created C:\Program Files\7-Zip\Lang\tt.txt.fun drpbx.exe File opened for modification C:\Program Files\Java\jre-1.8\README.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_1.0.65.0_neutral_split.scale-140_8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_1.0.38.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceDaYi.txt drpbx.exe File created C:\Program Files\ReadUnregister.3gp.fun drpbx.exe File created C:\Program Files\7-Zip\Lang\sr-spc.txt.fun drpbx.exe File opened for modification C:\Program Files\Windows Media Player\Network Sharing\ConnectionManager.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1909.12456.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File created C:\Program Files\7-Zip\Lang\sk.txt.fun drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\mr.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VCLibs.140.00_14.0.29231.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_120.png drpbx.exe File opened for modification C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_48.png drpbx.exe File created C:\Program Files\Microsoft Office\FileSystemMetadata.xml.fun drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\pt.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File created C:\Program Files\7-Zip\Lang\ku.txt.fun drpbx.exe File created C:\Program Files\7-Zip\Lang\pl.txt.fun drpbx.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E1-0000-1000-0000000FF1CE.xml.fun drpbx.exe File created C:\Program Files\VideoLAN\VLC\README.txt.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_neutral_split.scale-200_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.NET.Native.Runtime.2.2_2.2.28604.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\mk.txt drpbx.exe File created C:\Program Files\7-Zip\Lang\sr-spl.txt.fun drpbx.exe File created C:\Program Files\7-Zip\Lang\uz.txt.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VCLibs.140.00_14.0.29231.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_2019.21012.10511.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File created C:\Program Files\7-Zip\Lang\cy.txt.fun drpbx.exe File created C:\Program Files\7-Zip\Lang\fy.txt.fun drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\it.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.50.24002.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File created C:\Program Files\dotnet\LICENSE.txt.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\offlineStrings.js drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GamingApp_2021.427.138.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-006E-0409-1000-0000000FF1CE.xml.fun drpbx.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E2-0409-1000-0000000FF1CE.xml.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_1.0.6.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GetHelp_10.2008.32311.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File created C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt.fun drpbx.exe File opened for modification C:\Program Files\7-Zip\License.txt drpbx.exe File opened for modification C:\Program Files\Microsoft Office\ThinAppXManifest.xml drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\sv.txt drpbx.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0090-0409-1000-0000000FF1CE.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.2104.12721.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files (x86)\Windows Media Player\Media Renderer\RenderingControl.xml drpbx.exe File created C:\Program Files\GroupPing.tif.fun drpbx.exe File created C:\Program Files\7-Zip\Lang\lij.txt.fun drpbx.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-006E-0409-1000-0000000FF1CE.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_1.0.65.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\ReadUnregister.3gp drpbx.exe File created C:\Program Files\7-Zip\readme.txt.fun drpbx.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 2 IoCs
Processes:
Jigsaw.exedescription pid Process procid_target PID 1488 wrote to memory of 1880 1488 Jigsaw.exe 82 PID 1488 wrote to memory of 1880 1488 Jigsaw.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\Jigsaw.exe"C:\Users\Admin\AppData\Local\Temp\Jigsaw.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1488 -
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Jigsaw.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
PID:1880
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
283KB
MD52773e3dc59472296cb0024ba7715a64e
SHA127d99fbca067f478bb91cdbcb92f13a828b00859
SHA2563ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA5126ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262