Analysis
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max time kernel
118s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
21-03-2024 15:56
Static task
static1
Behavioral task
behavioral1
Sample
dc06ac13dbaa78b63d9d5ed3bc320325.exe
Resource
win7-20240221-en
General
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Target
dc06ac13dbaa78b63d9d5ed3bc320325.exe
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Size
85KB
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MD5
dc06ac13dbaa78b63d9d5ed3bc320325
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SHA1
da476b6368b98df50d8198b8d5ad8370fb115511
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SHA256
7b9b1a64a811390acb3384677420ed0508176891723708ac43cf980bf40c8701
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SHA512
5deb542d64711a86f71bfaa1fc53a3c5b5c7165d2135a49366ba575bd13b326caa491075a5ad13485bbe77b3680a3ed83f692fffec643d88f27c5545b4d4842a
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SSDEEP
1536:wC1UFncLzy+yYoE2qhpmryEnJwcY0vFnh:j1UFnMzy+YwhpmryEnJwcY0Nh
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 1492 dc06ac13dbaa78b63d9d5ed3bc320325.exe -
Installs/modifies Browser Helper Object 2 TTPs 4 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\{00A6FAF1-072E-44cf-8957-5838F569A31D} dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D}\ = "MyWebSearch Search Assistant BHO" dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{00A6FAF1-072E-44cf-8957-5838F569A31D} dc06ac13dbaa78b63d9d5ed3bc320325.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{00A6FAF1-072E-44CF-8957-5838F569A31D} dc06ac13dbaa78b63d9d5ed3bc320325.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL dc06ac13dbaa78b63d9d5ed3bc320325.exe File created C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL dc06ac13dbaa78b63d9d5ed3bc320325.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\UrlSearchHooks dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\URLSearchHooks\{00A6FAF6-072E-44cf-8957-5838F569A31D} dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\URLSearchHooks\{CFBFAE00-17A6-11D0-99CB-00C04FD64497} dc06ac13dbaa78b63d9d5ed3bc320325.exe -
Modifies registry class 12 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32\ = "C:\\Program Files (x86)\\MyWebSearch\\SrchAstt\\1.bin\\MWSSRCAS.DLL" dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\ = "MyWebSearch Search Assistant BHO" dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\Programmable dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32 dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32\ = "C:\\Program Files (x86)\\MyWebSearch\\SrchAstt\\1.bin\\MWSSRCAS.DLL" dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D}\InprocServer32\ThreadingModel = "Apartment" dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D} dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF1-072E-44cf-8957-5838F569A31D} dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\ dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\Programmable dc06ac13dbaa78b63d9d5ed3bc320325.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32 dc06ac13dbaa78b63d9d5ed3bc320325.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00A6FAF6-072E-44cf-8957-5838F569A31D}\InprocServer32\ThreadingModel = "Apartment" dc06ac13dbaa78b63d9d5ed3bc320325.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe"C:\Users\Admin\AppData\Local\Temp\dc06ac13dbaa78b63d9d5ed3bc320325.exe"1⤵
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Modifies registry class
PID:1492
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
56KB
MD5fc7fb80d01d6d4c66ea91e9feebc2800
SHA1488dd6c91963c1d5d4a8f82949f78d4e2b137297
SHA25648cb732a3c288fcee8b33045b8a58622fd3dfcd56cfd9b730d90fa154207de92
SHA51260ea3137e514e8bc8d8fb9d93da58bde11f8507d54bcb94bc6a69095d224a9236c086b7ea288d0d5a3c3b52aa9f16897601a2dbfde09a59cf5338640c9e7232a