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Analysis
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max time kernel
119s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
28/06/2024, 11:22
Static task
static1
Behavioral task
behavioral1
Sample
Outlook_4.83.901.0_20231017/outlka23.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
Outlook_4.83.901.0_20231017/outlka23.dll
Resource
win10v2004-20240611-en
Behavioral task
behavioral3
Sample
Outlook_4.83.901.0_20231017/outlka64.dll
Resource
win7-20240611-en
Behavioral task
behavioral4
Sample
Outlook_4.83.901.0_20231017/outlka64.dll
Resource
win10v2004-20240508-en
General
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Target
Outlook_4.83.901.0_20231017/outlka23.dll
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Size
2.5MB
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MD5
9b5cc466186483554a3ee0c4fbd2bee7
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SHA1
d4acb4c21fa3e6b3fe3e7bb94cbfcd6af448a350
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SHA256
3b21b2dfd7b07d6c8b198e45d81abf8431e514b866707932976a16f15693f1ff
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SHA512
458cb1fe705129f828d457e089dd9b022ab4675eeef11792fdcaf4f70da9f439882c29a5dc83bba31f893d2c9bf34c3c49b1437e7b074beeee202eecfda43e0b
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SSDEEP
49152:GxtuksqLe7KWFlIyLfRcPZy9GEuPbP053:G5sqLeBIufRcPZU7
Malware Config
Signatures
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Modifies registry class 46 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin\CurVer\ = "OL2003Addin.Addin.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\ = "Addin Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\ = "IAddin" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\ = "IAddin" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin.1\ = "Addin Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\TypeLib\ = "{EC7B995D-7EFE-412A-8D3A-B3810BB97821}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\ = "OL2003Addin 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\TypeLib\ = "{EC7B995D-7EFE-412A-8D3A-B3810BB97821}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\ProgID\ = "OL2003Addin.Addin.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\TypeLib\ = "{EC7B995D-7EFE-412A-8D3A-B3810BB97821}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin\ = "Addin Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\VersionIndependentProgID\ = "OL2003Addin.Addin" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Outlook_4.83.901.0_20231017\\outlka23.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Outlook_4.83.901.0_20231017\\outlka23.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A8FF5CA-3B94-4713-B65C-82255CD5658F}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Outlook_4.83.901.0_20231017" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin.1\CLSID\ = "{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EC7B995D-7EFE-412A-8D3A-B3810BB97821}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\OL2003Addin.Addin\CLSID\ = "{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DB1EF4A5-6BB4-4FA3-B3F8-4B28A7D5667F}\VersionIndependentProgID regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2280 wrote to memory of 344 2280 regsvr32.exe 28 PID 2280 wrote to memory of 344 2280 regsvr32.exe 28 PID 2280 wrote to memory of 344 2280 regsvr32.exe 28 PID 2280 wrote to memory of 344 2280 regsvr32.exe 28 PID 2280 wrote to memory of 344 2280 regsvr32.exe 28 PID 2280 wrote to memory of 344 2280 regsvr32.exe 28 PID 2280 wrote to memory of 344 2280 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\Outlook_4.83.901.0_20231017\outlka23.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2280 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\Outlook_4.83.901.0_20231017\outlka23.dll2⤵
- Modifies registry class
PID:344
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