jigsaw | 9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7

Resubmissions

09/10/2023, 22:48

231009-2rf8psgh7z10

28/12/2022, 09:22

221228-lb667aaa7810

Analysis

max time kernel
69s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
28/12/2022, 09:22

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General

Target
HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
Size 421KB
Sample221228-lb667aaa78
SHA256 9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7
MD5 1ff8649e8f8d0652d583b9a648161d3f
SHA1 3441ff983221742ed460f8310e49203b5dc59a15
SHA512 ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d
SSDEEP 12288:2w1pOfl/oUzs8vwfzNquSgkE9tSF/aXx:3po/oUNwfpqVrktOc
MD5 SHA1 SHA512 SSDEEP

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

Executes dropped EXE 1 IoCs

pid	Process
892	drpbx.exe

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\BlockWatch.raw.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\UnblockWrite.png.fun	drpbx.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OneNote\SendToOneNote-PipelineConfig.xml	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\16_9-frame-image-mask.png	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\jsse.jar	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.apache.felix.gogo.runtime_0.10.0.v201209301036.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\images\144DPI\(144DPI)redStateIcon.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.ssl.feature_1.0.0.v20140827-1444\feature.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\ext\jhall-2.0_05.jar	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-keyring-impl_zh_CN.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\1047x576black.png	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\images\item_hover_docked.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\XML Files\Messenger.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Paper.xml	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\Calendar.Gadget\images\bPrev-disable.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\form_responses.gif	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ga.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mr.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\en-US\eula.rtf	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\OneNote\SendToOneNote-PipelineConfig.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\ParentMenuButtonIcon.png	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\bg_OliveGreen.gif.fun	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.metadata.nl_zh_4.4.0.v20140623020002.jar.fun	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.jetty.security_8.1.14.v20131031.jar.fun	drpbx.exe
File created	C:\Program Files\ImportRead.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ms.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Clarity.xml	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\ViewHeaderPreview.jpg.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Swirl\background.gif	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-utilities_ja.jar	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-modules-appui_zh_CN.jar.fun	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-application_zh_CN.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\SlideShow.Gadget\images\prev_hov.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.emf.common_2.10.1.v20140901-1043.jar.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\CommonData\CommsIncomingImageSmall.jpg	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\CPU.Gadget\images\dialdot_lrg.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\15.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\7.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\javafx-doclet.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\settings_right_hover.png	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\ChessIconImages.bmp.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\144DPI\(144DPI)greenStateIcon.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\topnav.gif.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Currency.Gadget\images\delete_down.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.workbench.swt.nl_ja_4.4.0.v20140623020002.jar.fun	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.update.configurator.nl_ja_4.4.0.v20140623020002.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.docs.zh_CN_5.5.0.165303.jar	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\CommonData\AlertImage_ContactLow.jpg.fun	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.BusinessData.xml.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Solstice.xml	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\hint_down.png	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Solutions\gradient.png.fun	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\Computers\computericon.jpg.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-modules-sampler.xml	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-openide-explorer_ja.jar	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\1047x576black.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\ja-JP\gadget.xml	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.mbeanbrowser.ja_5.5.0.165303.jar.fun	drpbx.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\core\locale\core_zh_CN.jar.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-api-caching_ja.jar	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\content-background.png	drpbx.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\novelty_s.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\47.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\daisies.png	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Swirl\tab_on.gif.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\es-ES\js\weather.js	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

description	pid	Process	procid_target
PID 1960 wrote to memory of 892	1960	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	28
PID 1960 wrote to memory of 892	1960	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	28
PID 1960 wrote to memory of 892	1960	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	28

C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
"C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
  2⤵
  - Executes dropped EXE
  - Modifies extensions of user files
  - Drops file in Program Files directory
  PID:892

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

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

drpbx.exe

Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
Size 421KB
SHA256 9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7
MD5 1ff8649e8f8d0652d583b9a648161d3f
SHA1 3441ff983221742ed460f8310e49203b5dc59a15
SHA512 ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d
SSDEEP 12288:2w1pOfl/oUzs8vwfzNquSgkE9tSF/aXx:3po/oUNwfpqVrktOc
MD5 SHA1 SHA512 SSDEEP

Submit Download

drpbx.exe

Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
Size 421KB
SHA256 9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7
MD5 1ff8649e8f8d0652d583b9a648161d3f
SHA1 3441ff983221742ed460f8310e49203b5dc59a15
SHA512 ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d
SSDEEP 12288:2w1pOfl/oUzs8vwfzNquSgkE9tSF/aXx:3po/oUNwfpqVrktOc
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/892-60-0x000007FEF3660000-0x000007FEF4083000-memory.dmp

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memory/892-61-0x000007FEEEB40000-0x000007FEEFBD6000-memory.dmp

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memory/892-62-0x0000000000A9B000-0x0000000000ABA000-memory.dmp

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memory/1960-54-0x000007FEF4090000-0x000007FEF4AB3000-memory.dmp

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memory/1960-55-0x000007FEF23B0000-0x000007FEF3446000-memory.dmp

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memory/1960-56-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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