Resubmissions
18-12-2023 08:32
231218-kfrfvshehr 1005-12-2023 07:30
231205-jb2klaab85 1004-12-2023 20:22
231204-y51ygsfd77 10Analysis
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max time kernel
139s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
18-12-2023 08:32
Static task
static1
Behavioral task
behavioral1
Sample
Ransomware.Jigsaw.zip
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
Ransomware.Jigsaw.zip
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
jigsaw.exe
Resource
win7-20231215-en
Behavioral task
behavioral4
Sample
jigsaw.exe
Resource
win10v2004-20231215-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 (440) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation jigsaw.exe -
Executes dropped EXE 1 IoCs
pid Process 2812 drpbx.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\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
description ioc Process File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-60_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Win10\MicrosoftSolitaireAppList.targetsize-48_altform-unplated_devicefamily-colorfulunplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_x64__8wekyb3d8bbwe\Assets\Square44x44Logo.scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteNotebookLargeTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\lv.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteAppList.targetsize-20_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\Timer10Sec.targetsize-32.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\Scientific.targetsize-16_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-48_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\RestoreRequest.jpeg drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\vreg\powerview.x-none.msi.16.x-none.vreg.dat drpbx.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0090-0000-1000-0000000FF1CE.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-40_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-256_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\ExchangeMediumTile.scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\voice.png drpbx.exe File opened for modification C:\Program Files\Windows Media Player\Media Renderer\avtransport.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.targetsize-72_altform-lightunplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\XboxApp.Telemetry\BIEvents.xml drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\ku.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_neutral_split.scale-100_kzf8qxf38zg5c\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-40_altform-unplated_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\ExchangeMediumTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubSmallTile.scale-100_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-60_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.contrast-white_targetsize-30.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\Assets\HeroAppTile.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\GamesXboxHubSmallTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-256_altform-unplated_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteNotebookSmallTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-24_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubMedTile.scale-200_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-80_altform-unplated_contrast-high.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\ExchangeMediumTile.scale-400.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\Office365LogoWLockup.scale-180.png drpbx.exe File opened for modification C:\Program Files\7-Zip\Lang\kab.txt drpbx.exe File opened for modification C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt drpbx.exe File opened for modification C:\Program Files\Java\jdk-1.8\lib\ant-javafx.jar drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-32_altform-unplated_contrast-high.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-64_altform-lightunplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-Advanced-Light.scale-250.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-16_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.contrast-black_targetsize-256_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.contrast-black_targetsize-72_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\ImmersiveControl_Button_Click_Sound.wav drpbx.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.OSM.OSM.x-none.msi.16.x-none.xml.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Microsoft.Advertising\ormma.js drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AlarmsBadge.contrast-black_scale-100.png drpbx.exe File opened for modification C:\Program Files\Windows NT\TableTextService\TableTextServiceYi.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Win10\MicrosoftSolitaireAppList.targetsize-48_altform-unplated_contrast-white_devicefamily-colorfulunplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\SmallTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\CardUIBkg.scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-48_altform-unplated_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsMedTile.contrast-black_scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-Yahoo-Light.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\ScreenSketchWide310x150Logo.scale-200_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Square44x44Logo.scale-400.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\Assets\MixedRealityPortalAppList.targetsize-96_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\7734_32x32x32.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-36_altform-unplated_contrast-black.png drpbx.exe File created C:\Program Files\7-Zip\Lang\es.txt.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml 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
description pid Process procid_target PID 2072 wrote to memory of 2812 2072 jigsaw.exe 90 PID 2072 wrote to memory of 2812 2072 jigsaw.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2072 -
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:2812
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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