jigsaw | 86a391fe7a237f4f17846c53d71e45820411d1a9a6e0c16f22a11ebc491ff9ff

Analysis

max time kernel
97s
max time network
115s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
19-01-2025 16:44

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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
Jigsaw family
jigsaw
Renames multiple (894) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1898866115-3160784972-1217720036-1000\Control Panel\International\Geo\Nation	jigsaw.exe

Executes dropped EXE 1 IoCs

pid	Process
2024	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-1-5-21-1898866115-3160784972-1217720036-1000\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\Google\Chrome\Application\chrome.VisualElementsManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.scale-80.png	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Proof.Culture.msi.16.es-es.xml.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\rsod\dcf.x-none.msi.16.x-none.boot.tree.dat.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\TPN.txt.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Templates\1033\ApothecaryResume.dotx.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Tracker\turnOffNotificationInTray.gif	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\ea-sym.xml	drpbx.exe
File created	C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_CopyDrop32x32.gif.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceTigrinya.txt	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\lib\deploy.jar	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spc.txt	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.powerpointmui.msi.16.en-us.xml.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\vreg\proofing.msi.16.en-us.vreg.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\insert.xml	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\Client2019_eula.txt	drpbx.exe
File created	C:\Program Files\ShowConvertTo.pptm.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ja.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Templates\1033\EssentialReport.dotx	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Tracker\server_issue.gif	drpbx.exe
File opened for modification	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\FrameworkList.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\Microsoft Office\root\Office16\1033\QuickStyles\Default.dotx.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\RenderingControl_DMP.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceYi.txt	drpbx.exe
File created	C:\Program Files\Java\jre-1.8\lib\management-agent.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\loc\AppXManifestLoc.16.en-us.xml	drpbx.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\jfxswt.jar.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\officeinventoryagentlogon.xml.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\bn.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0409-1000-0000000FF1CE.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.scale-100.png.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.scale-180.png.fun	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.scale-140.png	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipsnld.xml	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 created	C:\Program Files\Microsoft Office\root\Templates\1033\EssentialReport.dotx.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Templates\1033\Training.potx.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\server\Xusage.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\word2013bw.dotx	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\lij.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\tr.txt.fun	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\VideoLAN\VLC\lua\http\requests\playlist.xml	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\lua\http\requests\vlm.xml.fun	drpbx.exe
File created	C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\DMR_120.png	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipskor.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\rsod\excelmui.msi.16.en-us.tree.dat.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-180.png.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Tracker\warning.gif	drpbx.exe
File created	C:\Program Files\OpenReset.doc.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\hi.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_kor.xml	drpbx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\Xusage.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT-Rockwell.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.scale-140.png	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.scale-180.png.fun	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Tracker\server_lg.gif.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunmscapi.jar	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0090-0409-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\connectionmanager_dmr.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WordNaiveBayesCommandRanker.txt.fun	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 3916 wrote to memory of 2024	3916	jigsaw.exe	83
PID 3916 wrote to memory of 2024	3916	jigsaw.exe	83

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:3916
- 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:2024

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3380

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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\{8BAB84D4-9B47-4CC9-B525-891D50728259} - OProcSessId.dat.fun

Filesize
16B

MD5
8ebcc5ca5ac09a09376801ecdd6f3792

SHA1
81187142b138e0245d5d0bc511f7c46c30df3e14

SHA256
619e246fc0ac11320ff9e322a979948d949494b0c18217f4d794e1b398818880

SHA512
cec50bfc6ad2f57f16da99459f40f2d424c6d5691685fa1053284f46c8c8c8a975d7bcb1f3521c4f3fbdc310cf4714e29404aa23be6021e2e267c97b090dc650

Download Submit
memory/2024-10-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/2024-8-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/2024-11-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/2024-12-0x000000001BB20000-0x000000001BB28000-memory.dmp

Filesize
32KB

Download
memory/2024-13-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/2024-913-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/3916-3-0x00000000012B0000-0x00000000012E8000-memory.dmp

Filesize
224KB

Download
memory/3916-4-0x000000001BEE0000-0x000000001C3AE000-memory.dmp

Filesize
4.8MB

Download
memory/3916-5-0x000000001B8F0000-0x000000001B98C000-memory.dmp

Filesize
624KB

Download
memory/3916-2-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/3916-9-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download
memory/3916-0-0x00007FFD034E5000-0x00007FFD034E6000-memory.dmp

Filesize
4KB

Download
memory/3916-1-0x00007FFD03230000-0x00007FFD03BD1000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads