Overview
overview
6Static
static
4Terabox_1.32.0.1.exe
windows10-ltsc 2021-x64
6$PLUGINSDI...UI.dll
windows10-ltsc 2021-x64
3$PLUGINSDI...em.dll
windows10-ltsc 2021-x64
3$PLUGINSDI...sW.dll
windows10-ltsc 2021-x64
3$TEMP/kernel.dll
windows10-ltsc 2021-x64
3AppUtil.dll
windows10-ltsc 2021-x64
3AutoUpdate...il.dll
windows10-ltsc 2021-x64
3AutoUpdate...te.exe
windows10-ltsc 2021-x64
3BugReport.exe
windows10-ltsc 2021-x64
5Bull140U.dll
windows10-ltsc 2021-x64
3ChromeNati...st.exe
windows10-ltsc 2021-x64
3HelpUtility.exe
windows10-ltsc 2021-x64
3TeraBox.exe
windows10-ltsc 2021-x64
5TeraBoxHost.exe
windows10-ltsc 2021-x64
3TeraBoxRender.exe
windows10-ltsc 2021-x64
3TeraBoxWebService.exe
windows10-ltsc 2021-x64
3YunDb.dll
windows10-ltsc 2021-x64
3YunDls.dll
windows10-ltsc 2021-x64
3YunLogic.dll
windows10-ltsc 2021-x64
3YunOfficeAddin.dll
windows10-ltsc 2021-x64
3YunOfficeAddin64.dll
windows10-ltsc 2021-x64
5YunShellExt.dll
windows10-ltsc 2021-x64
3YunShellExt64.dll
windows10-ltsc 2021-x64
5YunUtilityService.exe
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3api-ms-win...-0.dll
windows10-ltsc 2021-x64
3Resubmissions
27-11-2024 20:39
241127-zfpdtszjes 627-11-2024 20:33
241127-zbwbksvqhl 625-11-2024 22:14
241125-15w1mswlcp 625-11-2024 20:57
241125-zryrmswke1 628-09-2024 18:21
240928-wzje5ssdlc 10Analysis
-
max time kernel
91s -
max time network
98s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
27-11-2024 20:33
Behavioral task
behavioral1
Sample
Terabox_1.32.0.1.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral2
Sample
$PLUGINSDIR/NsisInstallUI.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral4
Sample
$PLUGINSDIR/nsProcessW.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral5
Sample
$TEMP/kernel.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral6
Sample
AppUtil.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral7
Sample
AutoUpdate/AutoUpdateUtil.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral8
Sample
AutoUpdate/Autoupdate.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral9
Sample
BugReport.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral10
Sample
Bull140U.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral11
Sample
ChromeNativeMessagingHost.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral12
Sample
HelpUtility.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral13
Sample
TeraBox.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral14
Sample
TeraBoxHost.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral15
Sample
TeraBoxRender.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral16
Sample
TeraBoxWebService.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral17
Sample
YunDb.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral18
Sample
YunDls.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral19
Sample
YunLogic.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral20
Sample
YunOfficeAddin.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral21
Sample
YunOfficeAddin64.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral22
Sample
YunShellExt.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral23
Sample
YunShellExt64.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral24
Sample
YunUtilityService.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral25
Sample
api-ms-win-core-console-l1-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral26
Sample
api-ms-win-core-datetime-l1-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral27
Sample
api-ms-win-core-debug-l1-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral28
Sample
api-ms-win-core-errorhandling-l1-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral29
Sample
api-ms-win-core-file-l1-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral30
Sample
api-ms-win-core-file-l1-2-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral31
Sample
api-ms-win-core-file-l2-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
Behavioral task
behavioral32
Sample
api-ms-win-core-handle-l1-1-0.dll
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
General
-
Target
YunOfficeAddin64.dll
-
Size
491KB
-
MD5
aa257db82af0ce00192bfc3a72c47d56
-
SHA1
bbfa65b9512dbca06985fca1534c1178b331ab7b
-
SHA256
1083ea29c46cc3fdd3324a1887b6e3489e98076e9cc1b941f363ebd2225cbbff
-
SHA512
b45706e23f8f394e2693c49ad1410ddd3012fda01c3d88778f9d8c0ecf23b498fcd9e75d2eb45bb7032ec940bd81f568ace9830d0ef634d989f7408b03104b78
-
SSDEEP
12288:y26huPL8Un97lf3ijZXU9TFwChkt/XHC3+Qu:lr8K79OZXU9TFwChkt/XHO
Malware Config
Signatures
-
Event Triggered Execution: Component Object Model Hijacking 1 TTPs
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
-
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunExcelConnect\CurVer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\ = "IYunPPTConnect" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\YunOfficeAddin64.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\ = "IYunWordConnect" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunPPTConnect.1\CLSID\ = "{71CD4110-1E24-4B80-B699-9A982584CD3F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\Version regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunWordConnect.1\ = "YunWordConnect Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunWordConnect\CurVer\ = "YunOfficeAddin.YunWordConnect.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\ = "IYunPPTConnect" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\YunOfficeAddin64.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\ = "YunWordConnect Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunExcelConnect\CurVer\ = "YunOfficeAddin.YunExcelConnect.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\ProgID\ = "YunOfficeAddin.YunWordConnect.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\ProgID\ = "YunOfficeAddin.YunExcelConnect.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\VersionIndependentProgID\ = "YunOfficeAddin.YunExcelConnect" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunWordConnect.1\CLSID\ = "{8C5F2E83-848F-4741-9C87-47D21BF65FC2}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}\1.0\ = "YunOfficeAddinLib" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunPPTConnect\ = "YunPPTConnect Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\TypeLib\ = "{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\TypeLib\ = "{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunWordConnect regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\TypeLib\ = "{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunPPTConnect.1\ = "YunPPTConnect Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunWordConnect.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunPPTConnect\CurVer\ = "YunOfficeAddin.YunPPTConnect.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunWordConnect\ = "YunWordConnect Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{8C5F2E83-848F-4741-9C87-47D21BF65FC2}\Version\ = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}\1.0\0\win64 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\YunOfficeAddin.YunPPTConnect.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\ = "IYunExcelConnect" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\Version\ = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\TypeLib\ = "{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\ = "IYunWordConnect" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2FD26065-6B24-4B20-83AB-5BB041D24A79}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{21FF7AFE-087C-4A99-928B-1EF3EE99ED6C}\TypeLib\ = "{F20F2E1A-D834-48BA-A5E2-73A31BE77EEC}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{57A35E8A-E3AE-482E-9E6D-6DF71D4464AC}\Version regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{71CD4110-1E24-4B80-B699-9A982584CD3F}\VersionIndependentProgID\ = "YunOfficeAddin.YunPPTConnect" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7AE98A84-835E-44B4-9145-9DFFA5F43F3B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe