Analysis
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max time kernel
148s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240319-en -
resource tags
arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2024 19:43
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
dc75117ef4e143a7ede29fb4f935f0aa.dll
Resource
win7-20240221-en
3 signatures
150 seconds
General
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Target
dc75117ef4e143a7ede29fb4f935f0aa.dll
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Size
344KB
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MD5
dc75117ef4e143a7ede29fb4f935f0aa
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SHA1
b3ec2cc6d67d35e5483d398d2e88736fab9c7ec5
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SHA256
f8e00102c8e41d90690f3a3a3ecca6bf9be6c5c95b5ba85fa4a1dad76e67258b
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SHA512
d976588f47c75f805b0220af7497e9f33da5ad2b234c294b2fb87bd9d19dc76a2daa491f2b518e6c32a0a2c7ca8a0e7f641d1fef11de63f3ce5ec58bbaa55136
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SSDEEP
6144:3slDBPYZ07NkTEAMX8SUxfN46qjuNBBKl54jwT7yZ7:3slKaRkTEAXRq6qiNKl54MHm
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 1 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\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD} regsvr32.exe -
Modifies registry class 50 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\ = "_IavbtEvents" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\TypeLib\ = "{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\TypeLib\ = "{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dc75117ef4e143a7ede29fb4f935f0aa.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\ = "Iavbt" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\VersionIndependentProgID\ = "QXK.Olive" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dc75117ef4e143a7ede29fb4f935f0aa.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\ProgID\ = "QXK.Olive" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\TypeLib\ = "{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\TypeLib\ = "{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\HELPDIR\ regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\TypeLib\ = "{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\ = "QXK Olive" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DA6EBDCE-4207-455C-B9DB-C3FA5E440C20}\1.0\ = "avbt TL" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EC77EAFC-62D0-42B4-B2FB-64D6B18C5BDD} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\ = "_IavbtEvents" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AAAAC6F5-A653-4B2A-9C02-8EBD19366183}\ = "Iavbt" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{50365571-A7C7-47B3-854D-F45FDFC6687E}\TypeLib regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3208 wrote to memory of 2892 3208 regsvr32.exe 94 PID 3208 wrote to memory of 2892 3208 regsvr32.exe 94 PID 3208 wrote to memory of 2892 3208 regsvr32.exe 94
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\dc75117ef4e143a7ede29fb4f935f0aa.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3208 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\dc75117ef4e143a7ede29fb4f935f0aa.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2892
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3896 --field-trial-handle=2808,i,4621512294509789388,1545966267740426092,262144 --variations-seed-version /prefetch:81⤵PID:2820