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Analysis
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max time kernel
152s -
max time network
167s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2022, 15:49
Static task
static1
Behavioral task
behavioral1
Sample
c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe
Resource
win10v2004-20220812-en
General
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Target
c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe
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Size
198KB
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MD5
7a62dd6af92d259fd11b681446b4ab1e
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SHA1
7280c669158baa18c1ff2996d3402ba9e9216f52
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SHA256
c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e
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SHA512
0a101f45370bc8142379d2e331db994f73a1b25524fa738ebe2c27820a2353723b666725322e704f7bde624559591dcccb6979a35c4f8e79999b11c17ebfecf9
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SSDEEP
3072:r7+mrh42ya4kcFoWZHlWzzXGOJlBpPlPlUHV2I+h+7dUchBpp:rZrh42xcTHlrMXRlPN+7dd
Malware Config
Signatures
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Sets file execution options in registry 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe\Debugger = "C:\\Windows\\system32\\ctfmon_lr.exe" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\iexplore.exe\Debugger c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe -
Loads dropped DLL 1 IoCs
pid Process 3412 regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 3 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 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\IExplore = "1" regsvr32.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\dq41573.dll c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe File created C:\Windows\SysWOW64\ctfmon_lr.exe regsvr32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 41 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\ProgID\ = "D.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\ = "IDOMPeek" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\InprocServer32\ = "C:\\Windows\\SysWow64\\dq41573.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\ = "LIB" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\dq41573.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\TypeLib\ = "{FE0A5A69-3FDC-3B21-9084-44308DF6C787}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\ = "IDOMPeek" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\VersionIndependentProgID\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FE0A5A69-3FDC-3B21-9084-44308DF6C787}\1.0\HELPDIR\ = "C:\\Windows\\SysWow64\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E9CE2C86-A7F3-3C1F-830F-216F0DE1B96C}\TypeLib\ = "{FE0A5A69-3FDC-3B21-9084-44308DF6C787}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73D7CCBD-6E7C-3016-BDF6-38227E28DB37}\VersionIndependentProgID regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2992 wrote to memory of 3412 2992 c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe 82 PID 2992 wrote to memory of 3412 2992 c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe 82 PID 2992 wrote to memory of 3412 2992 c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe"C:\Users\Admin\AppData\Local\Temp\c18087af5de586664422c8b1844dee8d49cc935b27078cbb632d724a4f46771e.exe"1⤵
- Sets file execution options in registry
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2992 -
C:\Windows\SysWOW64\regsvr32.exe"C:\Windows\System32\regsvr32.exe" /s C:\Windows\system32\dq41573.dll2⤵
- Sets file execution options in registry
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
PID:3412
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
192KB
MD53895ec96f2c08784c68ade6eb2aa701c
SHA11d35e2fac98b4e378b670feba13782be438cd7cb
SHA25674163d48300f528eb5464813e81887eb5ee39cfb440f15b6df587cabeb55392c
SHA512e652e017acedf4c96661af1ed1bb7c6a6ad0d582e02eecbdf27803023915959df0f81a0b39ca5cf8a37764913903ecaee62a44906513c20f879026a736434f54
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Filesize
192KB
MD53895ec96f2c08784c68ade6eb2aa701c
SHA11d35e2fac98b4e378b670feba13782be438cd7cb
SHA25674163d48300f528eb5464813e81887eb5ee39cfb440f15b6df587cabeb55392c
SHA512e652e017acedf4c96661af1ed1bb7c6a6ad0d582e02eecbdf27803023915959df0f81a0b39ca5cf8a37764913903ecaee62a44906513c20f879026a736434f54