Analysis
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max time kernel
22s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29-11-2022 06:12
Static task
static1
Behavioral task
behavioral1
Sample
88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll
Resource
win10v2004-20220812-en
General
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Target
88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll
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Size
252KB
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MD5
4fe6e2f7398981c41ed38700060f9fae
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SHA1
0bf11b9a4a7c9a692b34c6776b4d289c5ec969c1
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SHA256
88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f
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SHA512
d92c45f4bf241637f59d3931adf15baade2b10e7ee594d59ef9b18f077c586501554baed7b633533cfb93ffebca883958ddf1ab0ec826baeaa1d88b6e51fee40
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SSDEEP
6144:LA27bgkNSQvp11A6epPODzVC2kj7gfWzEhz:LAMbpN9v7gpPOD02/fR
Malware Config
Signatures
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Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\Run regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\d = "C:\\Program Files (x86)\\Internet Explorer\\ctfmonxfo.exe" regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 3 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{57C24966-E74C-32C2-A396-9E41D9501F24} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{57C24966-E74C-32C2-A396-9E41D9501F24}\IExplore = "1" regsvr32.exe -
Drops file in Program Files directory 1 IoCs
Processes:
regsvr32.exedescription ioc process File created C:\Program Files (x86)\Internet Explorer\ctfmonxfo.exe regsvr32.exe -
Modifies registry class 41 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{57C24966-E74C-32C2-A396-9E41D9501F24}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\ProgID\ = "D.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\ = "LIB" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\VersionIndependentProgID\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\ = "IDOMPeek" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{57C24966-E74C-32C2-A396-9E41D9501F24}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\ = "IDOMPeek" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\TypeLib\ = "{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5E00F89A-1A0A-301B-84F4-0F3557968E2E}\TypeLib\ = "{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{57C24966-E74C-32C2-A396-9E41D9501F24}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A9F7CEB2-881F-37C3-BE4A-B2AFB53161CC}\1.0\FLAGS regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid process target process PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe PID 1032 wrote to memory of 2036 1032 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\88184a610590d5fa661cacc0755d82c38f7d59a9a721cee1ca9e22960651015f.dll2⤵
- Adds policy Run key to start application
- Installs/modifies Browser Helper Object
- Drops file in Program Files directory
- Modifies registry class