7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0

General

Target

7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0.dll
Size

219KB
MD5

6c10466ad7c153e7f949fa3c6600b6ac
SHA1

5d009f79383a81622eefd8b183efb23fbf96a62f
SHA256

7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0
SHA512

54a7565a2ce2030b4b865835e13e2de6b7b5bb8f171e7d9db28c3fd1de8d98b7072f50effeb5d15a6ca66a2ff309cbe9b7732154f4a2855ad20c79803f0df33e

Score

6^/10

bootkit persistence

Malware Config

Signatures

Drops desktop.ini file(s) 3 IoCs

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\$Recycle.Bin\S-1-5-21-790714498-1549421491-1643397139-1000\desktop.ini	rundll32.exe
File opened for modification	C:\Program Files\desktop.ini	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI	rundll32.exe

Enumerates connected drives 3 TTPs 1 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

Processes:

rundll32.exe

description ioc process

File opened (read-only) \??\D: rundll32.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rundll32.exe

description	ioc	process
File opened (read-only)	\??\D:	rundll32.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Drops file in Program Files directory 64 IoCs

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.launcher.nl_zh_4.4.0.v20140623020002.jar	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.osgi.services.nl_zh_4.4.0.v20140623020002.jar	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-oob.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.ScriptDom.dll	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Common.dll	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-black_scale-140.png	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\Tmf975B.tmp	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\plugin.xml	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppvIsvSubsystems64.dll	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.flightrecorder_5.5.0.165303.jar	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Retail-pl.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoianetutil.dll	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\Tmf995F.tmp	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\zh-TW\tipresx.dll.mui	rundll32.exe
File opened for modification	C:\Program Files\Common Files\System\ado\es-ES\msader15.dll.mui	rundll32.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\lib\images\cursors\win32_LinkNoDrop32x32.gif	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Trial-ul-oob.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp2-ul-oob.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\TellMePowerPoint.nrr	rundll32.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt-br.txt	rundll32.exe
File opened for modification	C:\Program Files\Common Files\System\es-ES\Tmf9BC0.tmp	rundll32.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\Tmf9BD0.tmp	rundll32.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\oledbjvs.inc	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-openide-awt.jar	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipshe.xml	rundll32.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\libGLESv2.dll	rundll32.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\lv.pak	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\JAWTAccessBridge-64.dll	rundll32.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\META-INF\ECLIPSE_.SF	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\profiler\lib\jfluid-server-15.jar	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX45.exe.config	rundll32.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\lib\security\blacklisted.certs	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTrial-ppd.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\config\ModuleAutoDeps\org-openide-loaders.xml	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest4-ppd.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial5-pl.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-black_scale-180.png	rundll32.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.xml	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest5-pl.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_OEM_Perp-ul-phn.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-pl.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.et-ee.dll	rundll32.exe
File opened for modification	C:\Program Files\Common Files\System\it-IT\Tmf9BD0.tmp	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\lib\management\snmp.acl.template	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.p2.artifact.repository.nl_zh_4.4.0.v20140623020002.jar	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.p2.operations.nl_zh_4.4.0.v20140623020002.jar	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.PPT	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSIPC\da\msipc.dll.mui	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_OEM_Perp-pl.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProXC2RVL_KMS_ClientC2R-ul.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Storage.XmlSerializers.dll	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.equinox.launcher.win32.win32.x86_64.nl_zh_4.4.0.v20140623020002.jar	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\locale\org-netbeans-swing-plaf_ja.jar	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub_eula.txt	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\ORGCINTL.DLL	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe	rundll32.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\ja-JP\sqloledb.rll.mui	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\.lastModified	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoasb.exe	rundll32.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\Locales\sv.pak	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-ppd.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\WordVL_KMS_Client-ul-oob.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-threaddump_ja.jar	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3948 wrote to memory of 1492	3948	rundll32.exe	rundll32.exe
PID 3948 wrote to memory of 1492	3948	rundll32.exe	rundll32.exe
PID 3948 wrote to memory of 1492	3948	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0.dll,#1
  2⤵
  - Drops desktop.ini file(s)
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  - Drops file in Program Files directory
  PID:1492