jigsaw | 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

General

Target

Jigsaw.exe
Size

283KB
MD5

2773e3dc59472296cb0024ba7715a64e
SHA1

27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256

3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512

6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

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
Executes dropped EXE 1 IoCs

Processes:

drpbx.exe

pid process

2036 drpbx.exe

pid	process
2036	drpbx.exe

Modifies extensions of user files 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

drpbx.exe

description	ioc	process
File created	C:\Users\Admin\Pictures\EnterEdit.tif.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\JoinClear.png.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\JoinInitialize.png.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\ConnectUnprotect.png.fun	drpbx.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Jigsaw.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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\et.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ga.txt.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.BusinessApplications.RuntimeUi.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bn.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ms.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\th.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DissolveNoise.png	drpbx.exe
File created	C:\Program Files\Java\jre7\THIRDPARTYLICENSEREADME-JAVAFX.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\browser\blocklist.xml	drpbx.exe
File created	C:\Program Files (x86)\Microsoft.NET\RedistList\AssemblyList_4_extended.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\de.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\mr.txt.fun	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\browser\blocklist.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\COPYING.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\DMR_120.jpg	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.SharePoint.BusinessData.Administration.Client.xml.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ka.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kab.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\RenderingControl.xml	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.Interop.InfoPath.SemiTrust.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw48.bmp	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\README.txt.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\SplashScreen.bmp	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eu.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\fa.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mng.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\pt-br.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\tt.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Games\Chess\ChessMCE.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\id.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\pl.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ro.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sr-spc.txt.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Common Files\Services\verisign.bmp	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\7-Zip\Lang\va.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\va.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\da.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\el.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sv.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sv.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\th.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.SharePoint.BusinessData.Administration.Client.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceSimplifiedShuangPin.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ext.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ko.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mk.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\uz.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\DMR_48.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ug.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\zh-tw.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\cy.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gl.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hu.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ne.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\nl.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ru.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\THIRDPARTYLICENSEREADME-JAVAFX.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft.NET\RedistList\AssemblyList_4_extended.xml	drpbx.exe
File opened for modification	C:\Program Files\Windows NT\TableTextService\TableTextServiceSimplifiedShuangPin.txt	drpbx.exe
File opened for modification	C:\Program Files\DisconnectRegister.xla	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\co.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\es.txt.fun	drpbx.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Jigsaw.exe

description	pid	process	target process
PID 1300 wrote to memory of 2036	1300	Jigsaw.exe	drpbx.exe
PID 1300 wrote to memory of 2036	1300	Jigsaw.exe	drpbx.exe
PID 1300 wrote to memory of 2036	1300	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:1300

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
- Modifies extensions of user files
- Drops file in Program Files directory
PID:2036

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

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\Drpbx\drpbx.exe
Filesize
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

Download Submit
memory/1300-54-0x000007FEF2930000-0x000007FEF39C6000-memory.dmp

Filesize
16.6MB

Download
memory/1300-55-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmp

Filesize
8KB

Download
memory/2036-56-0x0000000000000000-mapping.dmp

Download
memory/2036-59-0x000007FEF2480000-0x000007FEF3516000-memory.dmp

Filesize
16.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads