jigsaw | 9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7

Resubmissions

09-10-2023 22:48

231009-2rf8psgh7z 10

28-12-2022 09:22

221228-lb667aaa78 10

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28-12-2022 09:22

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General

Target

HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
Size

421KB
MD5

1ff8649e8f8d0652d583b9a648161d3f
SHA1

3441ff983221742ed460f8310e49203b5dc59a15
SHA256

9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7
SHA512

ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d
SSDEEP

12288:2w1pOfl/oUzs8vwfzNquSgkE9tSF/aXx:3po/oUNwfpqVrktOc

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
1304	drpbx.exe

Modifies extensions of user files 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\CompleteJoin.png.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\NewRequest.raw.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\RepairClose.tif.fun	drpbx.exe

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.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-1-5-21-4246620582-653642754-1174164128-1000\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 created	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.forms.nl_ja_4.4.0.v20140623020002.jar.fun	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\js\plugins\tracked-send\js\nls\ko-kr\ui-strings.js.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\WorldClockMedTile.contrast-black_scale-125.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\EmptySearch.scale-400.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\images\themeless\combine_poster.jpg	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-Google.scale-125.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\config\Modules\org-openide-text.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\Microsoft.Membership.MeControl\Assets\OfflinePages\Scripts\Me\MeControl\offline\offlineStrings.js	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.scale-100.png.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\js\nls\hr-hr\ui-strings.js	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\Assets\contrast-white\MixedRealityPortalAppList.targetsize-16_altform-unplated_contrast-white.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\MapsLargeTile.scale-200.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\AppIcon.targetsize-60_contrast-white.png	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\back-arrow-default.svg.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Assets\AppTiles\WeatherImages\423x173\10.jpg	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\plugin.js.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\Content\SaturationGradient.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailAppList.targetsize-20.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-60_altform-unplated_contrast-black.png	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sr-spc.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_neutral_split.scale-100_8wekyb3d8bbwe\images\Square44x44Logo.scale-100.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-16.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\accessibilitychecker\main.js	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Assets\AppTiles\Spacer\7px.png	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\plugins\exportpdf-selector.js.fun	drpbx.exe
File created	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\config\Modules\com-sun-tools-visualvm-jvmstat.xml.fun	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_sortedby_up_selected_18.svg.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteNotebookMedTile.scale-400.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\win8-scrollbar\themes\dark\arrow-left.gif	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\js\nls\sk-sk\ui-strings.js	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0115-0409-1000-0000000FF1CE.xml	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-sa_ja.jar	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected]	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1906.1972.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Place\LTR\contrast-white\MedTile.scale-125.png	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\images\themes\dark\illustrations_retina.png.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\MedTile.scale-200.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.8.0_66\db\lib\derbyrun.jar.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\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Assets\Images\PrintAndShare\Glyph_0xe7e3.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\ICU\icudt26l.dat	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\AddressBook2x.png	drpbx.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipshe.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\vreg\osmux.x-none.msi.16.x-none.vreg.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\lib\jsse.jar	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\TimerLargeTile.contrast-white_scale-125.png	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\S_IlluEmptyStateCCFiles_280x192.svg.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\ScreenSketchSquare44x44Logo.scale-125_contrast-black.png	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-bg_glass_100_f6f6f6_1x400.png.fun	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_removeme-default_18.svg.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-openide-awt.jar	drpbx.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\files\dev\nls\zh-cn\ui-strings.js.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\lib\javaws.jar	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\LargeTile.scale-150.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarAppList.targetsize-36_altform-unplated.png	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\rsod\powerpoint.x-none.msi.16.x-none.tree.dat	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\AppPackageStoreLogo.scale-125.png	drpbx.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientLangPack_eula.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\AppIcon.targetsize-64_altform-unplated_contrast-black.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\ru-ru\ui-strings.js	drpbx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\themes\dark\s_thumbnailview_18.svg	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\Assets\MixedRealityPortalAppList.targetsize-72_altform-lightunplated.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\SplashScreen.scale-100.png	drpbx.exe
File created	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\lib\locale\org-openide-util_zh_CN.jar.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 2 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 1304	4032	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	83
PID 4032 wrote to memory of 1304	4032	HEUR-Trojan.Win32.Generic-9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	83

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⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4032
- 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:1304

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
421KB

MD5
1ff8649e8f8d0652d583b9a648161d3f

SHA1
3441ff983221742ed460f8310e49203b5dc59a15

SHA256
9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7

SHA512
ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d

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

Filesize
421KB

MD5
1ff8649e8f8d0652d583b9a648161d3f

SHA1
3441ff983221742ed460f8310e49203b5dc59a15

SHA256
9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7

SHA512
ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d

Download Submit
memory/1304-136-0x00007FFBAC5A0000-0x00007FFBACFD6000-memory.dmp

Filesize
10.2MB

Download
memory/4032-132-0x00007FFBAC5A0000-0x00007FFBACFD6000-memory.dmp

Filesize
10.2MB

Download