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Analysis
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max time kernel
150s -
max time network
83s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
22/02/2023, 21:35
Static task
static1
Behavioral task
behavioral1
Sample
Fantom.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
Fantom.exe
Resource
win10v2004-20230220-en
General
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Target
Fantom.exe
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Size
261KB
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MD5
7d80230df68ccba871815d68f016c282
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SHA1
e10874c6108a26ceedfc84f50881824462b5b6b6
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SHA256
f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b
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SHA512
64d02b3e7ed82a64aaac1f74c34d6b6e6feaac665ca9c08911b93eddcec66595687024ec576e74ea09a1193ace3923969c75de8733859835fef45335cf265540
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SSDEEP
3072:vDKW1LgppLRHMY0TBfJvjcTp5XxG8pt+oSOpE22obq+NYgvPuCEbMBWJxLRiUgV:vDKW1Lgbdl0TBBvjc/M8n35nYgvKjdzi
Malware Config
Extracted
C:\Program Files\7-Zip\Lang\DECRYPT_YOUR_FILES.HTML
Signatures
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Fantom
Ransomware which hides encryption process behind fake Windows Update screen.
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Disables Task Manager via registry modification
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation Fantom.exe -
Executes dropped EXE 1 IoCs
pid Process 540 WindowsUpdate.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT-Rockwell.xml Fantom.exe File opened for modification C:\Program Files\Mozilla Firefox\browser\features\[email protected] Fantom.exe File created C:\Program Files\VideoLAN\VLC\plugins\video_chroma\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-host-remote.xml Fantom.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\lib\resources.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\com.jrockit.mc.rcp.product_5.5.0.165303\feature.xml Fantom.exe File created C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.equinox.p2.core.feature_1.3.0.v20140523-0116\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Facet.thmx Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\mc.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\e4_classic_winxp.css Fantom.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\hu\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\PhotosAppList.contrast-black_scale-125.png Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Store\StoreLogo.scale-400.png Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Store\Wide310x150Logo.scale-125.png Fantom.exe File created C:\Program Files\Java\jre1.8.0_66\lib\amd64\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\VideoLAN\VLC\locale\ne\LC_MESSAGES\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\PhotosMedTile.contrast-black_scale-100.png Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.ZuneVideo_10.19071.19011.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-black\AppList.scale-125_contrast-black.png Fantom.exe File created C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\com.jrockit.mc.feature.rcp.zh_CN_5.5.0.165303\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Store\SmallTile.scale-150.png Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.browser.jdp.ja_5.5.0.165303.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-modules-keyring-impl_ja.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-swing-outline_zh_CN.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-modules-keyring-impl.xml Fantom.exe File created C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\Windows NT\TableTextService\TableTextServiceDaYi.txt Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\ShareProvider_CopyFile24x24.scale-100.png Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.babel.nls_eclipse_zh_4.4.0.v20140623020002\about.html Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.components.ui_5.5.0.165303.jar Fantom.exe File created C:\Program Files\Java\jre1.8.0_66\lib\cmm\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\tracedefinition130.xml Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1906.1972.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\Images\Ratings\Yelp7.scale-125.png Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.p2.updatechecker.nl_zh_4.4.0.v20140623020002.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\modules\locale\org-netbeans-core_visualvm.jar Fantom.exe File created C:\Program Files\Common Files\System\fr-FR\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-openide-windows.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-snaptracer_zh_CN.jar Fantom.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\AugLoop\third-party-notices.txt Fantom.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\Portal\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20141007-2033\about.html Fantom.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\cardview-addtotable-dark.png Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.DesktopAppInstaller_1.0.30251.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\contrast-black\AppPackageStoreLogo.scale-100_contrast-black.png Fantom.exe File opened for modification C:\Program Files\Google\Chrome\Application\106.0.5249.119\Locales\gu.pak Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.babel.nls_eclipse_zh_4.4.0.v20140623020002\feature.xml Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1906.1972.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Car\LTR\contrast-black\LargeTile.scale-125.png Fantom.exe File created C:\Program Files\Windows Photo Viewer\it-IT\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Store\AppIcon.targetsize-48_altform-lightunplated.png Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.jetty.io_8.1.14.v20131031.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.jface.text.nl_ja_4.4.0.v20140623020002.jar Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\e4_default_gtk.css Fantom.exe File created C:\Program Files\Internet Explorer\ja-JP\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\dark\e4-dark_basestyle.css Fantom.exe File created C:\Program Files\VideoLAN\VLC\locale\ast\LC_MESSAGES\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\PhotosSmallTile.contrast-black_scale-125.png Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsStore_11910.1002.5.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Assets\Store\AppIcon.targetsize-24_contrast-white.png Fantom.exe File created C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\DECRYPT_YOUR_FILES.HTML Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-swing-plaf.xml Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\config\Modules\com-sun-tools-visualvm-uisupport.xml Fantom.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft SQL Server\130\DECRYPT_YOUR_FILES.HTML Fantom.exe File created C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.DesktopAppInstaller_1.0.30251.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\contrast-black\AppPackageLargeTile.scale-125_contrast-black.png Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\AppPackageStoreLogo.scale-100.png Fantom.exe File created C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppPackageLargeTile.scale-400_contrast-white.png Fantom.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.intro_3.4.200.v20130326-1254.jar Fantom.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 4060 Fantom.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4060 Fantom.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4060 wrote to memory of 540 4060 Fantom.exe 81 PID 4060 wrote to memory of 540 4060 Fantom.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\Fantom.exe"C:\Users\Admin\AppData\Local\Temp\Fantom.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4060 -
C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"2⤵
- Executes dropped EXE
PID:540
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5ef8353c652929116efd6b0c89d4e5823
SHA10c14933a20cf64d52930f286a2a8bec4a28f6c37
SHA256268a1d0e065c369a1e2c03530f331c87f0dd329ca7134627ea68c939fd521416
SHA5125eed6a23ddd158223376ed7223fb8524ecf6f67eb32693a2e54f5ee33b3072f74e73684e93268e71e0b9da7baa594884636d825e6e4cc1efdf4d8f73eae3f6d9
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Filesize
160B
MD525c147899815e02d07cbf586485288c9
SHA10606e1e6bca9d315709f1ff632c9be8e564088e3
SHA2561b1771d74e290cea385c5b2dd62697fda911577e71bacf66c6cc4d908b9f5aaa
SHA512c88021a27d1b1f6dadc82c15bbf4d0bdd2fb5720487ceda6f5da9c25caf26b74b6f766f812fd19c3ff856ced014fe7d247a782ec74946f3a1e99affe0e23707c
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C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.core.ssl.feature_1.0.0.v20140827-1444\epl-v10.html.fantom
Filesize12KB
MD5c552dcfd6c5988e8032f06d575c9004a
SHA18c95d5fd73ce691e43cafd378c4983bc150164d5
SHA256887bc2f20bd116373d79f287f12e1a7e1e5fdc7245a05a5db107391cb6e8b4e6
SHA5129c0d0ccad81e6c153a312f19b1a0148db1196153b6c3880d13b9462c9acde9c805258bfeb1a01ebe3bfa2436a1be56441523d99c22ebb119d41f0b8554f831be
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C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.core.ssl.feature_1.0.0.v20140827-1444\license.html
Filesize8KB
MD505b1ef0110ae9d80537b2b0dd3d73767
SHA1e96cb583e124b50d1652a6862c4d8bb3c9c7f4e2
SHA25640c5e2ca052204293a55f3bd2f9330fe2edea5ff4ee9e9ac2331a28f84a8925a
SHA512c0d8c7568f5944e86e5288f63091d4eb6e3676ef7653aebf969e1c3c9a1bec2fe0cee9d74ff4d1c1291cd927f3d2c0cc40ae486a86684cfb17c7c77e3e779813
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C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\asl-v20.txt
Filesize11KB
MD5290282560d47e287e028953606c3de7c
SHA1ce13abfa94431ab0896246a7968dc582722fa23a
SHA2564ea6cb3b7b28f9e8e0b95bea432015e96de56b206c0ef7d969a507c65cf4de14
SHA512251ceb6c133248ad453b2ae98f848a3b5eeb7fe41628e4f632e8a3ed2dabff122454d1b2604631651bb0b6f648dfb1143ee2c658364840c86acb59055fa72aa1
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Filesize
107KB
MD5976d1fdb2169505e8e4653b7d4c7ebcd
SHA132479b0a817e340d4b68c5735513da5dc11762bd
SHA256866e88e1fa5c2c71f708b9cdaa4745df13e1ab6e754f5189df064e77ae21ecf0
SHA51283d512e5e48a3aa8f9f19e5e1ab4e26c7050269122cf29ac8c13a6d1b72f70c54539f78646dc20e81c89a91a5d4fd09a3370cc988a9149cd8d6d79d4e8462278
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Filesize
172KB
MD5346092d1ee70e18077e4b5b021da9dd1
SHA1af1b19acb9004ba278e25b8742aa55dd63b6edf5
SHA256785b2dca444777412961ebf0ed86572369e9e41a90abdae2c2db8d3b8bb8cfe7
SHA512fcd869f3a9880a67e613048d03ddb65b1149f93228cc7ee58b92bf6f5825fc99266767211aa0ee848faf355589f5e416605e0702f2d51fd6153baffc04a338ab
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Filesize
160B
MD525c147899815e02d07cbf586485288c9
SHA10606e1e6bca9d315709f1ff632c9be8e564088e3
SHA2561b1771d74e290cea385c5b2dd62697fda911577e71bacf66c6cc4d908b9f5aaa
SHA512c88021a27d1b1f6dadc82c15bbf4d0bdd2fb5720487ceda6f5da9c25caf26b74b6f766f812fd19c3ff856ced014fe7d247a782ec74946f3a1e99affe0e23707c
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Filesize
48B
MD5a8e53c447e3216e292719dcd56688a31
SHA1f5e590de67c78d627839f4a71547de9a308f2bc8
SHA256634b642e896d341a6080485cba093aba450ee2a994532a154c547e659234cb29
SHA512a380adbf27b2bf74a970c6c644170f0bdf12992a50dd5a148bf21dcf02d73a4d7af9d51199198c15e02e2804718a79c04982a9a2149fcbae8f2d182a631c0000
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Filesize
21KB
MD5fec89e9d2784b4c015fed6f5ae558e08
SHA1581fd9fb59bd42fbe7bd065cf0e6ff6d4d0daba2
SHA256489f2546a4ad1e0e0147d1ca2fd8801785689f67fb850171ccbaa6306a152065
SHA512e3bbf89cc0a955a2819455137e540952c55f417732a596ef314a46d5312b3bed644ac7595f75d3639ebc30e85f0f210dba0ef5b013d1b83bafd2c17a9d685a24
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Filesize
21KB
MD5fec89e9d2784b4c015fed6f5ae558e08
SHA1581fd9fb59bd42fbe7bd065cf0e6ff6d4d0daba2
SHA256489f2546a4ad1e0e0147d1ca2fd8801785689f67fb850171ccbaa6306a152065
SHA512e3bbf89cc0a955a2819455137e540952c55f417732a596ef314a46d5312b3bed644ac7595f75d3639ebc30e85f0f210dba0ef5b013d1b83bafd2c17a9d685a24
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Filesize
21KB
MD5fec89e9d2784b4c015fed6f5ae558e08
SHA1581fd9fb59bd42fbe7bd065cf0e6ff6d4d0daba2
SHA256489f2546a4ad1e0e0147d1ca2fd8801785689f67fb850171ccbaa6306a152065
SHA512e3bbf89cc0a955a2819455137e540952c55f417732a596ef314a46d5312b3bed644ac7595f75d3639ebc30e85f0f210dba0ef5b013d1b83bafd2c17a9d685a24