Analysis
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max time kernel
141s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
22-12-2023 04:42
Behavioral task
behavioral1
Sample
Jigsaw2-b.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
Jigsaw2-b.exe
Resource
win10v2004-20231215-en
General
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Target
Jigsaw2-b.exe
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Size
249KB
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MD5
33862bca1fe73d44277e9ad4f0aa81e1
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SHA1
e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1
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SHA256
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
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SHA512
08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c
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SSDEEP
6144:VFVg9EpWQxCKDgqLSV2hIq45K4O4xDL1UnhvHNJ7h0W93MPNdLM7G:/VgGD4KNWViIq4pOOPipHlzsQ7
Malware Config
Signatures
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Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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Renames multiple (2140) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
pid Process 2784 drpbx.exe -
Loads dropped DLL 1 IoCs
pid Process 2872 Jigsaw2-b.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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resource yara_rule behavioral1/memory/2872-0-0x0000000000400000-0x0000000000454000-memory.dmp upx behavioral1/memory/2872-175-0x0000000000400000-0x0000000000454000-memory.dmp upx behavioral1/memory/2784-171-0x0000000000400000-0x0000000000454000-memory.dmp upx behavioral1/files/0x000a000000015f71-169.dat upx behavioral1/files/0x000a000000015f71-168.dat upx behavioral1/files/0x000a000000015f71-166.dat upx behavioral1/memory/2784-582-0x0000000000400000-0x0000000000454000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" Jigsaw2-b.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Calendar.Gadget\ja-JP\js\calendar.js drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-templates_ja.jar.zemblax drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\include\jvmti.h.zemblax drpbx.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\16_9-frame-image-inset.png drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\docked_black_moon-waxing-gibbous.png drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\docked_blue_sun.png drpbx.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\README.txt drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\rtf_center.gif.zemblax drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-charts_zh_CN.jar.zemblax drpbx.exe File opened for modification C:\Program Files\Google\Chrome\Application\chrome.VisualElementsManifest.xml drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Templates\1033\LoanAmortization.xltx.zemblax drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\VeriSignLogo.jpg.zemblax drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\undocked_blue_windy.png drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\bg_Premium.gif.zemblax drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\SlideShow.Gadget\images\next_down.png drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.osgi.compatibility.state_1.0.1.v20140709-1414.jar.zemblax drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\FormToolImages.jpg.zemblax drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\bg_TexturedBlue.gif.zemblax drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-swing-plaf.xml drpbx.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ipsnld.xml drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\Weather.Gadget\images\docked_black_moon-last-quarter_partly-cloudy.png drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\config\Modules\org-netbeans-modules-profiler-heapwalker.xml.zemblax drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-profiler_zh_CN.jar.zemblax drpbx.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\shadowonlyframe_videoinset.png drpbx.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\NavigationRight_SelectionSubpicture.png drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\Form_StatusImage.jpg.zemblax drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\Currency.Gadget\it-IT\currency.html drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Calendar.Gadget\es-ES\js\calendar.js drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-uisupport.xml drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\bg_LightSpirit.gif.zemblax drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-openide-execution.xml drpbx.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Push\NavigationLeft_SelectionSubpicture.png drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\MediaCenter.Gadget\images\button_right_mousedown.png drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\images\5.png drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.help.ui.nl_ja_4.4.0.v20140623020002.jar drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-swing-plaf.jar.zemblax drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Calendar.Gadget\images\bPrev-hot.png drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\Currency.Gadget\images\graph_up.png drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes.nl_zh_4.4.0.v20140623020002.jar.zemblax drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\CommonData\AlertImage_Off.jpg.zemblax drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Currency.Gadget\es-ES\js\service.js drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\images\cursors\invalid32x32.gif drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-modules-spi-actions.xml drpbx.exe File created C:\Program Files\7-Zip\Lang\he.txt.zemblax drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\CPU.Gadget\it-IT\cpu.html drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.core.feature_1.1.0.v20140827-1444\license.html drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-openide-loaders_zh_CN.jar.zemblax drpbx.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\NavigationLeft_ButtonGraphic.png drpbx.exe File created C:\Program Files\Java\jre7\lib\jvm.hprof.txt.zemblax drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\en-US\gadget.xml drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.p2.ui.overridden_5.5.0.165303.jar drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\com-sun-tools-visualvm-host.xml.zemblax drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.css.swt.theme.nl_ja_4.4.0.v20140623020002.jar drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.transport.ecf.nl_zh_4.4.0.v20140623020002.jar.zemblax drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-modules-favorites.xml.zemblax drpbx.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-jmx_zh_CN.jar.zemblax drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-lib-profiler-charts_zh_CN.jar drpbx.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\InfoPathOM\Microsoft.Office.InfoPath.xml drpbx.exe File opened for modification C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\images\docked_black_moon-full.png drpbx.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\bg_VelvetRose.gif drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\FormsHomePage.html.zemblax drpbx.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-sampler_ja.jar drpbx.exe File created C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Flow.xml.zemblax drpbx.exe File opened for modification C:\Program Files (x86)\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\11.png drpbx.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2872 Jigsaw2-b.exe Token: SeDebugPrivilege 2784 drpbx.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2872 wrote to memory of 2784 2872 Jigsaw2-b.exe 16 PID 2872 wrote to memory of 2784 2872 Jigsaw2-b.exe 16 PID 2872 wrote to memory of 2784 2872 Jigsaw2-b.exe 16 PID 2872 wrote to memory of 2784 2872 Jigsaw2-b.exe 16
Processes
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C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe"C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872 -
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:2784
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
160B
MD5000e8c41d4a15fb34d0be0dbb56e3778
SHA100c4eae64ee6239d7c65d819c6ce1ac329224f8c
SHA2568bdfa6a5b7de345cf0d4fe0e9c17d8b0e9db26d58b05b1b2ebbb3a05a068ff28
SHA512775d832eb8ab73e4a93789917dca69edb6c91fbb426e02acf7c6e213ffb4575776187209d1c471fbf57c4621ea3c23d9850f6dfc2770d62c17de9d66710800af
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C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.feature_3.9.1.v20140827-1444\epl-v10.html.zemblax
Filesize12KB
MD5bd42ba47ff97fd7e395c90f79e0f9508
SHA1c2d8069ff6d72f3c63eeeac23933e5620f649d9d
SHA2563ad6f0a5c15cd3e24aa59e9687649e0d8d8b85789f3feef68e22b61a34a183e5
SHA5124eb6b58c46225f6e96bf41177892131384507cd8437e314426b797797c10960db52b84abd1fbf3cd845d1ed4bb8c67d2be3099a9ff5379a04d059b0557ef7fca
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C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.feature_3.9.1.v20140827-1444\license.html.zemblax
Filesize8KB
MD529c6678d44aa7966ae163d70dd9f3661
SHA104e2608b9497905befec2c9c74931cdd14c754e8
SHA256f7634f4769d57b1fd7ff257cafd60a0b309194e610202dfd26fc5113d0abf834
SHA512e80a6a0270d20e255f84ee6ef285b610b79731058f88272b8246e4f0c97222cebf2113d7ae70a1a145c0bec2a94fea5cb5abff0203a8be64c634a9b9b6a3b1b6
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Filesize
46KB
MD55e6912b50cb5cc6d5a59c7c18aed9ce3
SHA1e2dce479bf3ffa9bf2f6b797d2aa2d5faf566fd8
SHA2562c7ca41beeade43340f6a4df5dcec8d4589fa1743f5f8278d3257f7ffaff980c
SHA51282b9e2d27ee8f04af2cd679f4db9e5fedf5b8b423b496497d4e100b4eac5e3519acaf1469d70e67fb11b64bf822080d61c04242c504ba50c7d5f1b73ec44dcb6
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Filesize
39KB
MD5903333e867e98f6d11bfdedc37f51494
SHA16c2a6cf9bc52c2683a4b86f9b7c448b577ead1ed
SHA256eede8fa0d9e5618db36e673979632aadd853b6e4f3589baa0de00e33abbdc8e1
SHA512942eb382a42f84e619bbae6ce233f41fd65ba34b58d8d75a6014cdb29392d80b01ef418b5087d7e06f027724de33829cc92c0b380e7bbaeb05bc28e9c927b56a
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Filesize
16B
MD5cfdae8214d34112dbee6587664059558
SHA1f649f45d08c46572a9a50476478ddaef7e964353
SHA25633088cb514406f31e3d96a92c03294121ee9f24e176f7062625c2b36bee7a325
SHA512c260f2c223ecbf233051ac1d6a1548ad188a2777085e9d43b02da41b291ff258e4c506f99636150847aa24918c7bbb703652fef2fe55b3f50f85b5bd8dd5f6e3
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Filesize
25KB
MD58bc8faa21d7e8376472e4776539f57e1
SHA1221fee06317a6c4982244dbf30ef7bba06552aeb
SHA256ed3bfdbb148275c7ba18bc8f57d1604d5ccee997bd814d9168e1b5e84ee59f78
SHA512893e18a7ba6b2e3e4e79bdeef65096cba40cbab3c71c23066ebb7966666ad973914b9c8edc269d6bb0634a335c0eb7ed1fc0320325985883bd36bf19442c45ef