Analysis
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max time kernel
120s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
25-03-2024 16:34
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
de736bf66966bd4a64e50ec94afe686e.dll
Resource
win7-20240221-en
windows7-x64
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
de736bf66966bd4a64e50ec94afe686e.dll
Resource
win10v2004-20240226-en
windows10-2004-x64
4 signatures
150 seconds
General
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Target
de736bf66966bd4a64e50ec94afe686e.dll
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Size
236KB
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MD5
de736bf66966bd4a64e50ec94afe686e
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SHA1
cd56df652c8aef80ce5c5c4ea951019478571bf1
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SHA256
34d6031fa8405293fe209acef4dc6e0e92c2f708dbc9feef1a9d84e1705962ec
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SHA512
aaf25022ec578f7985c00e056121bc47a87456748dad03e2cb97a536cf21170dba4ce0ce1c8546f87bbd776c6ea854b675ab1fc4b2a4072856b5ef2ab41176be
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SSDEEP
3072:ART+V0SFseNgnBRVP05ksNPw6TrsAkZ9oJcJadaPgZAk1NVvtRATk:Ad+VdFse6RVPEkMwMTcMbZAk1NtGk
Score
7/10
Malware Config
Signatures
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Registers COM server for autorun 1 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\de736bf66966bd4a64e50ec94afe686e.dll" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\InprocServer32\ThreadingModel = "Apartment" regsvr32.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\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77} regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\ = "Adobe PDF Reader Link Helper" regsvr32.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\NoExplorer = "1" regsvr32.exe -
Modifies registry class 26 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\AppID = "{74DB2CD7-094B-4d60-9656-ADC2F8830D29}" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho\CLSID regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\de736bf66966bd4a64e50ec94afe686e.dll" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\TypeLib regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho.1\CLSID regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\ = "Adobe PDF Reader Link Helper" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\ProgID\ = "linkrdr.AIEbho.1" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\VersionIndependentProgID\ = "linkrdr.AIEbho" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho.1 regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho.1\ = "Adobe PDF Reader Link Helper" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77} regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\Programmable\ regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\TypeLib\ = "{2B63B21A-4075-4298-A569-D8113F1D7045}" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho.1\CLSID\ = "{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho\CurVer\ = "linkrdr.AIEbho.1" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\ProgID regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\Programmable regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID\{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho\ = "Adobe PDF Reader Link Helper" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho\CLSID\ = "{975670D0-7EFB-4fa8-90FA-3AE575B9FB77}" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\linkrdr.AIEbho\CurVer regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Wow6432Node\CLSID regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28 PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28 PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28 PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28 PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28 PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28 PID 2068 wrote to memory of 2208 2068 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\de736bf66966bd4a64e50ec94afe686e.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\de736bf66966bd4a64e50ec94afe686e.dll2⤵
- Registers COM server for autorun
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2208
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