jigsaw | 86a391fe7a237f4f17846c53d71e45820411d1a9a6e0c16f22a11ebc491ff9ff

Analysis

max time kernel
38s
max time network
19s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
03-08-2024 03:45

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General

Target

jigsaw.exe
Size

283KB
MD5

2773e3dc59472296cb0024ba7715a64e
SHA1

27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256

3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512

6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262
SSDEEP

6144:7fukPLPvucHiQQQ4uuy9ApZbZWxcZt+kTfMLJTOAZiYSXjjeqXus:7fu5cCT7yYlWi8kTfMLJTOAZiYSXjyqX

Score

10^/10

jigsaw persistence ransomware

Malware Config

Signatures

Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
ransomware jigsaw
Renames multiple (1011) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 1 IoCs

pid	Process
3240	drpbx.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\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.WindowsAlarms_10.1702.333.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.contrast-white_targetsize-20_altform-unplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1612.10312.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubAppList.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\HxAccountsSplashLogo.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.10252.0_x64__8wekyb3d8bbwe\Assets\FileIcons\FileLogoExtensions.targetsize-40.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.OneConnect_2.1701.277.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-white\OneConnectMedTile.scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\bwnumbered.dotx	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_x64__8wekyb3d8bbwe\Assets\SecondaryTiles\TrafficHub\LargeTile.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\Office.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_25.25.13009.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-30_altform-unplated_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_neutral_resources.scale-200_8wekyb3d8bbwe\Assets\Logo.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\SubsetList\Client.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-96_altform-unplated_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_16.511.8780.0_neutral_split.scale-125_8wekyb3d8bbwe\Lumia.ViewerPlugin\Assets\IconEditMoment.contrast-high_scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Messaging_3.26.24002.0_x64__8wekyb3d8bbwe\BuildInfo.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_25.25.13009.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-96_altform-unplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.3DBuilder_13.0.10349.0_x64__8wekyb3d8bbwe\Assets\Office\Group.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2017.125.40.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraAppList.targetsize-256_altform-unplated_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\4632_20x20x32.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\4632_40x40x32.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteAppList.targetsize-256_altform-unplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.16112.11621.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-16_altform-unplated_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sk.txt	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\hwrusash.dat	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\animations\OneNoteFRE_SaveAutomatically_LTR_Tablet.mp4	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteSectionSmallTile.scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_neutral_resources.scale-125_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-white_scale-180.png.fun	drpbx.exe
File opened for modification	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\FrameworkList.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.3DBuilder_13.0.10349.0_x64__8wekyb3d8bbwe\Assets\Contrast\contrast-white\BuilderLogo.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Themes\Autumn\autumn_10h.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_11701.1001.87.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\StoreMedTile.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_neutral_resources.scale-125_8wekyb3d8bbwe\Assets\contrast-white\LargeLogo.scale-125_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\RenderingControl_DMP.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_16.511.8780.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-40.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1702.312.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\CalculatorWideTile.contrast-white_scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\AppTiles\MapsLargeTile.scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Themes\Classic\classic_background_full.jpg	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.People_10.1.10531.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\PeopleSmallTile.scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.3DBuilder_13.0.10349.0_x64__8wekyb3d8bbwe\Assets\Office\PlaneCut.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.OneConnect_2.1701.277.0_x64__8wekyb3d8bbwe\Assets\OneConnectAppList.targetsize-16.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\GenericMailBadge.scale-150.png	drpbx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\deploy\[email protected]	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_neutral_split.scale-125_kzf8qxf38zg5c\SkypeApp\Assets\SkypeAppList.scale-125_contrast-black.png	drpbx.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ServiceWatcherSchedule.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vreg\office.x-none.msi.16.x-none.vreg.dat	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarMediumTile.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Buttons\Solve\autosolve_button_up.mobile.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1702.333.0_x64__8wekyb3d8bbwe\Assets\TimerMedTile.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_25.25.13009.0_x64__8wekyb3d8bbwe\Assets\notification.send.png	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\sdxs.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.3DBuilder_13.0.10349.0_x64__8wekyb3d8bbwe\Assets\EmbossBitmaps\Cloud_icon.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Assets\SkypeWideTile.scale-200_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_neutral_resources.scale-150_8wekyb3d8bbwe\Assets\contrast-black\SplashScreen.scale-150_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_x64__8wekyb3d8bbwe\Assets\AppTiles\LiveTile\2px.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailAppList.targetsize-20.png	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sr-spc.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\Assets\GetStartedLargeTile.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.OneConnect_2.1701.277.0_x64__8wekyb3d8bbwe\Assets\OneConnectAppList.targetsize-256.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\ExchangeLargeTile.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1702.301.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\VoiceRecorderLargeTile.contrast-black_scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\ThemeCreation\Default1.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteSectionWideTile.scale-150.png	drpbx.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 3240	4104	jigsaw.exe	73
PID 4104 wrote to memory of 3240	4104	jigsaw.exe	73

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:4104
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  PID:3240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\invalid32x32.gif.fun

Filesize
160B

MD5
580ee0344b7da2786da6a433a1e84893

SHA1
60f8c4dd5457e9834f5402cb326b1a2d3ca0ba7e

SHA256
98b6c2ddfefc628d03ceaef9d69688674a6bc32eb707f9ed86bc8c75675c4513

SHA512
356d2cdea3321e894b5b46ad1ea24c0e3c8be8e3c454b5bd300b7340cbb454e71fc89ca09ea0785b373b483e67c2f6f6bb408e489b0de4ff82d5ed69a75613ba

Download Submit
C:\ProgramData\Microsoft\Provisioning\{33d78dbc-3db7-4398-8533-000d7c02e5d1}\MasterDatastore.xml.fun

Filesize
272B

MD5
cbedb0911fdd4d66adc7bef7e898b2e4

SHA1
563eb113d2b1064f45f594ee6f697c25bc6862d5

SHA256
d117f7dff2b8d650108c43c9d2d7ffdf0452723f8996d74283a3e9bd29587f68

SHA512
203b347e01e67f359ae40f42b6f472f036489e9a456f2b4821fc6409fedc0502d2cfe890dd922cd32f80826f9e026f4e1023e781888ba2112287468342e7f529

Download Submit
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

Filesize
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

Download Submit
C:\Users\Admin\AppData\Local\Temp\{F740788C-FDD2-4E9F-8762-282545FFBB21} - OProcSessId.dat.fun

Filesize
16B

MD5
8ebcc5ca5ac09a09376801ecdd6f3792

SHA1
81187142b138e0245d5d0bc511f7c46c30df3e14

SHA256
619e246fc0ac11320ff9e322a979948d949494b0c18217f4d794e1b398818880

SHA512
cec50bfc6ad2f57f16da99459f40f2d424c6d5691685fa1053284f46c8c8c8a975d7bcb1f3521c4f3fbdc310cf4714e29404aa23be6021e2e267c97b090dc650

Download Submit
memory/3240-244-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download
memory/3240-14-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download
memory/3240-15-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download
memory/3240-16-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download
memory/3240-17-0x0000000002D80000-0x0000000002D88000-memory.dmp

Filesize
32KB

Download
memory/4104-5-0x000000001C720000-0x000000001C7BC000-memory.dmp

Filesize
624KB

Download
memory/4104-3-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download
memory/4104-13-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download
memory/4104-0-0x00007FFF3A875000-0x00007FFF3A876000-memory.dmp

Filesize
4KB

Download
memory/4104-4-0x000000001C1B0000-0x000000001C67E000-memory.dmp

Filesize
4.8MB

Download
memory/4104-2-0x0000000003020000-0x0000000003058000-memory.dmp

Filesize
224KB

Download
memory/4104-1-0x00007FFF3A5C0000-0x00007FFF3AF60000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads