ryuk | 6dfef684475fcbf722f88337d630668b6fcb73864daa9a7e65f3642d3766fdfc

Analysis

max time kernel
134s
max time network
153s
platform
windows10_x64
resource
win10v20201028
submitted
29/03/2021, 12:47

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Report Analysis Logs

General

Target

3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
Size

200KB
MD5

ad3a5956dc4e8fd6a62671a6204d11b9
SHA1

aac34bd5c2f8e63dca20034f24384c2ce1d641b5
SHA256

3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca
SHA512

23edec2ddc72277efca922dc7c66fef2220d0ad3709b277c236bd883214e423143a947ff48ec2a8b57b1835b715a06b39b7d1c2a423e62dc4166ad5097742f13

Score

10^/10

ryuk discovery ransomware

Malware Config

Extracted

Path

C:\users\Public\RyukReadMe.html

Family

ryuk

Ransom Note

contact balance of shadow universe Ryuk $password = 'nO49CJnf9vO'; $torlink = 'http://rk2zzyh63g5avvii4irkhymha3irblchdfj7prk6zwy23f6kahidkpqd.onion'; function info(){alert("INSTRUCTION:\r\n1. Download tor browser.\r\n2. Open link through tor browser: " + $torlink + "\r\n3. Fill the form, your password: "+ $password +"\r\nWe will contact you shortly.\r\nAlways send files for test decryption.");};

URLs

http://rk2zzyh63g5avvii4irkhymha3irblchdfj7prk6zwy23f6kahidkpqd.onion

Signatures

Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
ransomware ryuk

Executes dropped EXE 3 IoCs

pid	Process
4056	jyVJLAATlrep.exe
3088	OqmvRRwDFlan.exe
3912	EMDdviEuKlan.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3472	icacls.exe
4156	icacls.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Q:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\N:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\M:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\H:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\P:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\O:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\J:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\I:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\Y:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\X:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\V:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\S:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\G:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\L:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\K:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\E:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\Z:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\U:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\T:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\R:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\W:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened (read-only)	\??\F:	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.simpleconfigurator.manipulator.nl_zh_4.4.0.v20140623020002.jar	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.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\images\winXPTSFrame.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_logo.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\js\nls\ca-es\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\Resources\1033\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\zh-tw\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\Localized_images\es-es\AppStore_icon.svg	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\TypeSupport\Unicode\Mappings\Mac\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.browser.attach.ja_5.5.0.165303.jar	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\config\Modules\org-netbeans-modules-profiler-utilities.xml	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSIPC\tr\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\EDGE\EDGE.INF	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-ul-phn.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\aicuc\js\nls\fr-fr\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer-select\js\nls\zh-tw\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-modules-options-keymap_zh_CN.jar	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Trial-pl.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\sl-si\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\js\nls\tr-tr\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\plugin.properties	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\config\Modules\org-netbeans-core-io-ui.xml	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\README.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\id_get.svg	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\generic-rhp-app\images\example_icons2x.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\js\nls\sl-si\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\images\themes\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\cs-cz\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp2-ppd.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\TPN.txt	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL054.XML	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-openide-actions.xml	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019VL_KMS_Client_AE-ul.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\images\themes\dark\example_icons.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\ja-jp\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\js\nls\es-es\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\s_checkbox_selected_18.svg	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-core-output2_ja.jar	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\loc\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\THEMES16\RADIAL\THMBNAIL.PNG	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\ro-ro\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\walk-through\images\themeless\S_ThumbUpOutline_22_N.svg	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\js\nls\ru-ru\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\uss-search\js\nls\ru-ru\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-ul-phn.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Templates\Presentation Designs\Maple.gif	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\he-il\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\zh-cn\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-80.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_closereview_18.svg	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-pl.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\hu-hu\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\da-dk\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-white_scale-140.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VCCORLIB140_APP.DLL	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\VVIEWER.DLL	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\fr-ma\RyukReadMe.html	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\nb-no\ui-strings.js	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spc.txt	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\update_tracking\org-netbeans-modules-profiler-utilities.xml	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0018-0000-1000-0000000FF1CE.xml	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-ul-oob.xrm-ms	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-140.png	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 4056	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	78
PID 4692 wrote to memory of 4056	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	78
PID 4692 wrote to memory of 4056	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	78
PID 4692 wrote to memory of 3088	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	79
PID 4692 wrote to memory of 3088	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	79
PID 4692 wrote to memory of 3088	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	79
PID 4692 wrote to memory of 3912	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	80
PID 4692 wrote to memory of 3912	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	80
PID 4692 wrote to memory of 3912	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	80
PID 4692 wrote to memory of 3472	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	81
PID 4692 wrote to memory of 3472	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	81
PID 4692 wrote to memory of 3472	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	81
PID 4692 wrote to memory of 4156	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	82
PID 4692 wrote to memory of 4156	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	82
PID 4692 wrote to memory of 4156	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	82
PID 4692 wrote to memory of 4856	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	86
PID 4692 wrote to memory of 4856	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	86
PID 4692 wrote to memory of 4856	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	86
PID 4692 wrote to memory of 3288	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	85
PID 4692 wrote to memory of 3288	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	85
PID 4692 wrote to memory of 3288	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	85
PID 4692 wrote to memory of 2156	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	89
PID 4692 wrote to memory of 2156	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	89
PID 4692 wrote to memory of 2156	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	89
PID 4692 wrote to memory of 5024	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	90
PID 4692 wrote to memory of 5024	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	90
PID 4692 wrote to memory of 5024	4692	3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe	90
PID 4856 wrote to memory of 1792	4856	net.exe	93
PID 4856 wrote to memory of 1792	4856	net.exe	93
PID 4856 wrote to memory of 1792	4856	net.exe	93
PID 2156 wrote to memory of 4960	2156	net.exe	94
PID 2156 wrote to memory of 4960	2156	net.exe	94
PID 2156 wrote to memory of 4960	2156	net.exe	94
PID 3288 wrote to memory of 4928	3288	net.exe	95
PID 3288 wrote to memory of 4928	3288	net.exe	95
PID 3288 wrote to memory of 4928	3288	net.exe	95
PID 5024 wrote to memory of 5160	5024	net.exe	96
PID 5024 wrote to memory of 5160	5024	net.exe	96
PID 5024 wrote to memory of 5160	5024	net.exe	96

C:\Users\Admin\AppData\Local\Temp\3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe
"C:\Users\Admin\AppData\Local\Temp\3a6ebac4f83f8b9088c9e00a25d88a56fb7e46b7b8a03158682a5d7d28f0f6ca.exe"
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Users\Admin\AppData\Local\Temp\jyVJLAATlrep.exe
  "C:\Users\Admin\AppData\Local\Temp\jyVJLAATlrep.exe" 9 REP
  2⤵
  - Executes dropped EXE
  PID:4056
- C:\Users\Admin\AppData\Local\Temp\OqmvRRwDFlan.exe
  "C:\Users\Admin\AppData\Local\Temp\OqmvRRwDFlan.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  PID:3088
- C:\Users\Admin\AppData\Local\Temp\EMDdviEuKlan.exe
  "C:\Users\Admin\AppData\Local\Temp\EMDdviEuKlan.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  PID:3912
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\*" /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:3472
- C:\Windows\SysWOW64\icacls.exe
  icacls "D:\*" /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:4156
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3288
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:4928
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:1792
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:4960
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5024
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:5160

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3088-16-0x0000000002070000-0x0000000002071000-memory.dmp

Filesize
4KB

Download
memory/3912-23-0x0000000002050000-0x0000000002051000-memory.dmp

Filesize
4KB

Download
memory/4056-9-0x00000000020C0000-0x00000000020C1000-memory.dmp

Filesize
4KB

Download
memory/4692-27-0x0000000002E10000-0x0000000002E11000-memory.dmp

Filesize
4KB

Download
memory/4692-4-0x0000000035000000-0x0000000035028000-memory.dmp

Filesize
160KB

Download
memory/4692-3-0x0000000000520000-0x000000000053F000-memory.dmp

Filesize
124KB

Download
memory/4692-28-0x0000000003610000-0x0000000003611000-memory.dmp

Filesize
4KB

Download
memory/4692-2-0x00000000020C0000-0x00000000020C1000-memory.dmp

Filesize
4KB

Download
memory/4692-5-0x00000000020C0000-0x00000000020C1000-memory.dmp

Filesize
4KB

Download