jigsaw | 3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467

Resubmissions

09/10/2023, 22:48

231009-2rg51aah99 10

29/01/2023, 17:35

230129-v55pwsha8v 10

30/11/2022, 18:03

221130-wm9rkafc81 10

Analysis

max time kernel
181s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
30/11/2022, 18:03

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Report Analysis Logs

General

Target

3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe
Size

2.4MB
MD5

c2c5848ec8ae11e84d42521c527f75ca
SHA1

d8d98dff64297d4cf8a227a2c138efc4774942b2
SHA256

3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467
SHA512

10e3f210c2d98c090ce3a65be2ff70279c07c1bf3dcb06a48dbfaa34ab6471ed0e8f2a35fbf5bd0c9b61b1c55493c5042daa32556b4b28e22c28e8d80c5d0846
SSDEEP

49152:3rKiRwG7r2ie/XMK+kLg7SdqnCvIUdJi0l2Css5qq2nY4/gX1aNnUm5vL:3RXK+b7ScCvFPx3Kr48UmN

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

pid	Process
660	drpbx.exe

Modifies extensions of user files 8 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\WaitPublish.raw.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\WatchGet.png.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\WriteRepair.tif.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\CompareGet.raw.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\DisconnectRegister.tif.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\GrantSkip.tif.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\SuspendPublish.raw.locked	drpbx.exe
File created	C:\Users\Admin\Pictures\UnprotectComplete.tif.locked	drpbx.exe

Loads dropped DLL 1 IoCs

pid	Process
1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs

pid	Process
1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe
1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe
660	drpbx.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\Lang\uk.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.jpg	drpbx.exe
File created	C:\Program Files (x86)\Microsoft.NET\RedistList\AssemblyList_4_extended.xml.locked	drpbx.exe
File created	C:\Program Files\WatchNew.7z.locked	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\WMPDMC.exe	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sa.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ar.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ar.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\NEWS.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color120.jpg	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\id.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ku.txt	drpbx.exe
File created	C:\Program Files\Microsoft Games\Minesweeper\MineSweeper.exe.locked	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\uninstall\uninstall.log.locked	drpbx.exe
File opened for modification	C:\Program Files\Internet Explorer\iexplore.exe	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\plugin-container.exe.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\br.txt.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\mr.txt.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\zh-tw.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.log	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ast.txt.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\et.txt.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ko.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sk.txt	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\FindConvert.pot	drpbx.exe
File created	C:\Program Files\MergeSync.mov.locked	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\readme.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\cy.txt.locked	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe.locked	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mng2.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sq.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\uk.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\mn.txt.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sr-spl.txt.locked	drpbx.exe
File created	C:\Program Files\ExportAssert.m3u.locked	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\sidebar.exe	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ro.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\DMR_120.jpg	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\wmprph.exe	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\nn.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tt.txt	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\README.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tr.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\connectionmanager_dmr.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fy.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\nn.txt.locked	drpbx.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\logs\maintenanceservice-install.log	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ky.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\tr.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceArray.txt	drpbx.exe
File opened for modification	C:\Program Files\ExitBackup.ttf	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\pt-br.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\Windows NT\TableTextService\TableTextServiceYi.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.BusinessData.xml	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw48.png	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\lt.txt.locked	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ne.txt.locked	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\THIRDPARTYLICENSEREADME.txt.locked	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Games\Chess\Chess.exe	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\nl.txt	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 SetWindowsHookEx 2 IoCs

pid	Process
1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe
660	drpbx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 660	1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe	28
PID 1772 wrote to memory of 660	1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe	28
PID 1772 wrote to memory of 660	1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe	28
PID 1772 wrote to memory of 660	1772	3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe	28

C:\Users\Admin\AppData\Local\Temp\3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe
"C:\Users\Admin\AppData\Local\Temp\3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467.exe
  2⤵
  - Executes dropped EXE
  - Modifies extensions of user files
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Program Files directory
  - Suspicious use of SetWindowsHookEx
  PID:660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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

Filesize
2.4MB

MD5
c2c5848ec8ae11e84d42521c527f75ca

SHA1
d8d98dff64297d4cf8a227a2c138efc4774942b2

SHA256
3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467

SHA512
10e3f210c2d98c090ce3a65be2ff70279c07c1bf3dcb06a48dbfaa34ab6471ed0e8f2a35fbf5bd0c9b61b1c55493c5042daa32556b4b28e22c28e8d80c5d0846

Download Submit
\??\c:\users\admin\appdata\local\drpbx\drpbx.exe

Filesize
2.4MB

MD5
c2c5848ec8ae11e84d42521c527f75ca

SHA1
d8d98dff64297d4cf8a227a2c138efc4774942b2

SHA256
3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467

SHA512
10e3f210c2d98c090ce3a65be2ff70279c07c1bf3dcb06a48dbfaa34ab6471ed0e8f2a35fbf5bd0c9b61b1c55493c5042daa32556b4b28e22c28e8d80c5d0846

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

Filesize
2.4MB

MD5
c2c5848ec8ae11e84d42521c527f75ca

SHA1
d8d98dff64297d4cf8a227a2c138efc4774942b2

SHA256
3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467

SHA512
10e3f210c2d98c090ce3a65be2ff70279c07c1bf3dcb06a48dbfaa34ab6471ed0e8f2a35fbf5bd0c9b61b1c55493c5042daa32556b4b28e22c28e8d80c5d0846

Download Submit
memory/660-66-0x00000000008C0000-0x00000000008C2000-memory.dmp

Filesize
8KB

Download
memory/660-72-0x00000000008C0000-0x000000000127C000-memory.dmp

Filesize
9.7MB

Download
memory/660-71-0x0000000074100000-0x00000000746AB000-memory.dmp

Filesize
5.7MB

Download
memory/660-70-0x00000000FFBD0000-0x00000000FFFA1000-memory.dmp

Filesize
3.8MB

Download
memory/660-69-0x00000000008C0000-0x000000000127C000-memory.dmp

Filesize
9.7MB

Download
memory/660-68-0x0000000074100000-0x00000000746AB000-memory.dmp

Filesize
5.7MB

Download
memory/1772-58-0x00000000000E0000-0x0000000000A9C000-memory.dmp

Filesize
9.7MB

Download
memory/1772-65-0x00000000000E0000-0x0000000000A9C000-memory.dmp

Filesize
9.7MB

Download
memory/1772-67-0x0000000074100000-0x00000000746AB000-memory.dmp

Filesize
5.7MB

Download
memory/1772-59-0x0000000074100000-0x00000000746AB000-memory.dmp

Filesize
5.7MB

Download
memory/1772-54-0x0000000075291000-0x0000000075293000-memory.dmp

Filesize
8KB

Download
memory/1772-57-0x00000000FFBD0000-0x00000000FFFA1000-memory.dmp

Filesize
3.8MB

Download
memory/1772-56-0x00000000000E0000-0x00000000000E2000-memory.dmp

Filesize
8KB

Download
memory/1772-55-0x00000000000E0000-0x0000000000A9C000-memory.dmp

Filesize
9.7MB

Download