Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
28/12/2023, 22:22
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
fc821610eefe4ef341e645ee232b99d1.exe
Resource
win7-20231129-en
windows7-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
fc821610eefe4ef341e645ee232b99d1.exe
Resource
win10v2004-20231222-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
fc821610eefe4ef341e645ee232b99d1.exe
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Size
44KB
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MD5
fc821610eefe4ef341e645ee232b99d1
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SHA1
6807226c73f80eaecfe3af69ea946c58a6e168de
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SHA256
81864cbd415a37f260aae2ecefc1f919aae37aa0d2d906fc5ab5f63bbef788f1
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SHA512
374670c76464f62cba3d6a312e34310a29f0d4bc10a295fba0b4c267a15a0297a17419844b610f6a292d9dd91c91c818b44fef22a89386d29db349a4b2859503
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SSDEEP
768:1vopAPmXWUeXkN3Zg3OXKnHSG69Enlne0C2udLUeJs3Q:dJsTDdWnrrz3Q
Score
10/10
Malware Config
Signatures
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Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\ThunderAdvise = "{97421D0D-E07F-40DF-8F07-99597B9585AD}" rundll32.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\259393642ErrorControl\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\dump_wmimmc.sys" fc821610eefe4ef341e645ee232b99d1.exe -
Deletes itself 1 IoCs
pid Process 1132 cmd.exe -
Loads dropped DLL 4 IoCs
pid Process 2084 rundll32.exe 2084 rundll32.exe 2084 rundll32.exe 2084 rundll32.exe -
Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{97421D0D-E07F-40DF-8F07-99597B9585AD} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{97421D0D-E07F-40DF-8F07-99597B9585AD}\ = "ThunderAdvise" rundll32.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Downloaded Program Files\ThunderAdvise.dll fc821610eefe4ef341e645ee232b99d1.exe -
Modifies registry class 46 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE} rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\ProgID rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\VersionIndependentProgID\ = "ThunderAdvise.ThunderHlpObj" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\TypeLib\ = "{6D4C7E08-E021-414C-A42D-AB15A2302196}" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\0\win32\ = "C:\\Windows\\Downloaded Program Files\\ThunderAdvise.dll" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\HELPDIR rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\HELPDIR\ = "C:\\Windows\\Downloaded Program Files" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\ = "ThunderHlpObj Class" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\0 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\ = "IThunderHlpObj" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\TypeLib\ = "{6D4C7E08-E021-414C-A42D-AB15A2302196}" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\InprocServer32\ = "C:\\Windows\\Downloaded Program Files\\ThunderAdvise.dll" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\TypeLib rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\TypeLib rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\ProgID\ = "ThunderAdvise.ThunderHlpObj.1" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\VersionIndependentProgID rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\Programmable rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\FLAGS\ = "0" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj\CurVer\ = "ThunderAdvise.ThunderHlpObj.1" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\ = "ThunderAdvise 1.0 Type Library" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\0\win32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\TypeLib\ = "{6D4C7E08-E021-414C-A42D-AB15A2302196}" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\ = "IThunderHlpObj" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\TypeLib\Version = "1.0" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj.1 rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj\CLSID rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj\CLSID\ = "{97421D0D-E07F-40DF-8F07-99597B9585AD}" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0 rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\ProxyStubClsid32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\TypeLib\Version = "1.0" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj.1\CLSID rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj.1\CLSID\ = "{97421D0D-E07F-40DF-8F07-99597B9585AD}" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj\ = "ThunderHlpObj Class" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\InprocServer32 rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196}\1.0\FLAGS rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\TypeLib rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj.1\ = "ThunderHlpObj Class" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAdvise.ThunderHlpObj\CurVer rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{97421D0D-E07F-40DF-8F07-99597B9585AD}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6D4C7E08-E021-414C-A42D-AB15A2302196} rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE} rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{DEEF6582-9927-4CBD-897C-6A1F9E8C47DE}\ProxyStubClsid32 rundll32.exe -
Suspicious behavior: LoadsDriver 1 IoCs
pid Process 2888 fc821610eefe4ef341e645ee232b99d1.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeLoadDriverPrivilege 2888 fc821610eefe4ef341e645ee232b99d1.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 2084 2888 fc821610eefe4ef341e645ee232b99d1.exe 28 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29 PID 2888 wrote to memory of 1132 2888 fc821610eefe4ef341e645ee232b99d1.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\fc821610eefe4ef341e645ee232b99d1.exe"C:\Users\Admin\AppData\Local\Temp\fc821610eefe4ef341e645ee232b99d1.exe"1⤵
- Sets service image path in registry
- Drops file in Windows directory
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888 -
C:\Windows\SysWOW64\rundll32.exerundll32 "C:\Windows\Downloaded Program Files\ThunderAdvise.dll",MainProc2⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2084
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C:\Windows\SysWOW64\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\\uninstall.bat"2⤵
- Deletes itself
PID:1132
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
231B
MD55bf5a4b1e8a6d7b9133d09f3fcd63de0
SHA190a9f90bec6193b140bfbb7612285ce0b875264e
SHA256552794b8b5fe929f0ec94cc611fbd69f3b5c27163ec480b4465aba4d0ae82977
SHA5121be7c58dc6350e46e97205c36f8905e1b6973f383f038fe8b301eab5b59d379845396814da1bab2aa9d16aa894bd60ec6fcb964f50cca14bf3d73f2b4e87a07c
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Filesize
44KB
MD503f78e67da84f5ca0f8f96003758e921
SHA114ad4beead2f87685ccfdc90856ed755bd0ae7cd
SHA2565f3c9450385956583df4c4194601ad2bbc885325fb08508e629adf455899bf15
SHA51258b626c6b2f6a921131770d5877a9d127ec39d960e08cae85ec8fa895874a5315ab7a018e2786d6b7a8af6aac67a46a3d938dc737445d99e4ce7a514cc7a561e