jigsaw | bab1853454ca6fdd3acd471254101db1b805b601e309a49ec7b4b1fbcfc47ad7

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 spyware stealer

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 (1501) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Executes dropped EXE 1 IoCs

Processes:

drpbx.exe

pid process

1632 drpbx.exe
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

pid	process
1632	drpbx.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

jigsaw.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1287768749-810021449-2672985988-1000\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.exe

description	ioc	process
File created	C:\Program Files\7-Zip\Lang\vi.txt.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0018-0409-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\Content.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\rsod\powerpointmui.msi.16.en-us.boot.tree.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.2012.21.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-96.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\Assets\MediumGray.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_1.0.38.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.targetsize-60_altform-lightunplated_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_2.2106.2807.0_x64__8wekyb3d8bbwe\Assets\Store\AppIcon.targetsize-32_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailWideTile.scale-150.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.21012.10511.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-36_altform-unplated_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingNews_1.0.6.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\NewsAppList.targetsize-60_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Paint_10.2104.17.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\1851_20x20x32.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsTerminal_1.6.10571.0_x64__8wekyb3d8bbwe\Images\StoreLogo.scale-400_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Getstarted_10.2.41172.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\TipsLargeTile.scale-125_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.ScreenSketch_11.2104.2.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-white\SnipSketchWideTile.scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingNews_1.0.6.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\NewsAppList.targetsize-40_altform-unplated_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\WorkingElsewhere.scale-100_contrast-white.png	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-black_scale-180.png.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_1.0.6.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\WeatherAppList.targetsize-16_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\OutOfOffice.scale-200_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.40831.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.2104.12721.0_neutral_split.scale-100_8wekyb3d8bbwe\Images\splashscreen.scale-100_altform-colorful_theme-dark.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_11.2104.2.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\SnipSketchSmallTile.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.21012.10511.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\contrast-white\SmallLogo.scale-100_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_1.0.65.0_x64__8wekyb3d8bbwe\Images\PowerAutomateAppIcon.targetsize-32.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.41182.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-30.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.40978.0_x64__8wekyb3d8bbwe\Assets\contrast-white\MedTile.scale-150_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_1.0.6.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\contrast-black\WeatherLargeTile.scale-100_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Templates\1033\Training.potx	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\Assets\AppTiles\StoreAppList.targetsize-60_altform-lightunplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.21012.10511.0_x64__8wekyb3d8bbwe\Assets\contrast-black\OrientationControlFrontIndicatorHover.png	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\hwrcommonlm.dat	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\GenericMailWideTile.scale-400.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\HxMailAppList.targetsize-60_altform-lightunplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_4.0.2.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\Icons\StickyNotesAppList.scale-125_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.40831.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-36_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarBadge.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\tracedefinition130.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerPoint.PowerPoint.x-none.msi.16.x-none.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_2.2106.2807.0_x64__8wekyb3d8bbwe\Assets\Store\Square150x150Logo.scale-150.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\Assets\AppTiles\StoreAppList.targetsize-80_altform-lightunplated.png	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\ICU\icudt26l.dat.fun	drpbx.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\public_suffix_list.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Paint_10.2104.17.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\contrast-black\PaintStoreLogo.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-white\HxCalendarSmallTile.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\AccessMessageDismissal.txt	drpbx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-bg_diagonals-thick_18_b81900_40x40.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\webviewBoot.min.js	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_neutral_split.scale-125_8wekyb3d8bbwe\Win10\MicrosoftSolitaireLargeTile.scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\GenericMailSmallTile.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_neutral_split.scale-125_8wekyb3d8bbwe\Win10\contrast-white\MicrosoftSolitaireMedTile.scale-125_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.21012.10511.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-32_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_21.21030.25003.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.contrast-white_targetsize-48.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_1.0.38.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.targetsize-80_altform-unplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\EmptyView.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\LinkedInboxSmallTile.scale-400.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\A12_Spinner_int_2x.gif	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_closereview_18.svg.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color48.jpg	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Todos_0.33.33351.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipssrb.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.People_10.1909.12456.0_x64__8wekyb3d8bbwe\Assets\PeopleAppList.targetsize-48.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\HxMailAppList.targetsize-96_altform-lightunplated.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

Processes:

jigsaw.exe

description pid process target process

PID 4928 wrote to memory of 1632 4928 jigsaw.exe drpbx.exe
PID 4928 wrote to memory of 1632 4928 jigsaw.exe drpbx.exe

description	pid	process	target process
PID 4928 wrote to memory of 1632	4928	jigsaw.exe	drpbx.exe
PID 4928 wrote to memory of 1632	4928	jigsaw.exe	drpbx.exe

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:4928
- 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:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\LanguageNames2\DisplayLanguageNames.en_US_POSIX.txt.fun

Filesize
32KB

MD5
829165ca0fd145de3c2c8051b321734f

SHA1
f5cc3af85ab27c3ea2c2f7cbb8295b28a76a459e

SHA256
a193ee2673e0ba5ebc5ea6e65665b8a28bd7611f06d2b0174ec2076e22d94356

SHA512
7d380cda12b342a770def9d4e9c078c97874f3a30cd9f531355e3744a8fef2308f79878ffeb12ce26953325cb6a17bc7e54237dfdc2ee72b140ec295676adbcb

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

Filesize
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

Download Submit
C:\Users\Admin\AppData\Local\Packages\Microsoft.AccountsControl_cw5n1h2txyewy\Settings\settings.dat.fun

Filesize
8KB

MD5
f22599af9343cac74a6c5412104d748c

SHA1
e2ac4c57fa38f9d99f3d38c2f6582b4334331df5

SHA256
36537e56d60910ab6aa548e64ca4adafdcabde9d60739013993e12ba061dfd65

SHA512
5c8afc025e1d8342d93b7842dc7ef22eca61085857a80a08ba9b3f156ee3b814606bb32bc244bd525a7913e7915bdf3a86771d39577f4a1176ade04dc381c6d4

Download Submit
C:\Users\Admin\AppData\Local\Temp\BroadcastMsg_1722611965.txt.fun

Filesize
16B

MD5
8ebcc5ca5ac09a09376801ecdd6f3792

SHA1
81187142b138e0245d5d0bc511f7c46c30df3e14

SHA256
619e246fc0ac11320ff9e322a979948d949494b0c18217f4d794e1b398818880

SHA512
cec50bfc6ad2f57f16da99459f40f2d424c6d5691685fa1053284f46c8c8c8a975d7bcb1f3521c4f3fbdc310cf4714e29404aa23be6021e2e267c97b090dc650

Download Submit
memory/1632-22-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-24-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-20-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-1529-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-19-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-1528-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-23-0x0000000001490000-0x0000000001498000-memory.dmp

Filesize
32KB

Download
memory/1632-1527-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/1632-1526-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/4928-3-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/4928-2-0x0000000001720000-0x0000000001758000-memory.dmp

Filesize
224KB

Download
memory/4928-1-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download
memory/4928-4-0x000000001C340000-0x000000001C80E000-memory.dmp

Filesize
4.8MB

Download
memory/4928-5-0x000000001BD20000-0x000000001BDBC000-memory.dmp

Filesize
624KB

Download
memory/4928-0-0x00007FF8D5D65000-0x00007FF8D5D66000-memory.dmp

Filesize
4KB

Download
memory/4928-21-0x00007FF8D5AB0000-0x00007FF8D6451000-memory.dmp

Filesize
9.6MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads