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Analysis
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max time kernel
32s -
max time network
50s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
29/11/2022, 04:10
Static task
static1
Behavioral task
behavioral1
Sample
a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll
Resource
win7-20220901-en
windows7-x64
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll
Resource
win10v2004-20220812-en
windows10-2004-x64
4 signatures
150 seconds
General
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Target
a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll
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Size
332KB
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MD5
a932945fe37d59cc1c1eadbbc081a1f6
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SHA1
ae4ac3ac94c8f65d02fe1ad886e13d996c36c79e
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SHA256
a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4
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SHA512
c867e6dc24811607ec94d095e04084068eab0a151d144f13d8ce1165a3654520fd655f8f32c0b1225bbb148731b0f556e739ca1ac7034d78a9952a3507eb4587
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SSDEEP
3072:Keu+BWYzeydczWGtwAw7JazSjcU342U6LiBQLHp4sCsluf8p9AmHBHFladZ6fCVb:5rWYldVtcUFGfHmsdZACVzPZbV5+
Score
8/10
Malware Config
Signatures
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Registers COM server for autorun 1 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{EFF39A40-C163-4d5d-B073-52FBB55C646A} regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\ = "Adobe PDF Reader Link Helper" regsvr32.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\NoExplorer = "1" regsvr32.exe -
Modifies registry class 26 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\AppID = "{74DB2CD7-094B-4d60-9656-ADC2F8830D29}" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho\ = "Adobe PDF Reader Link Helper" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho\CLSID\ = "{EFF39A40-C163-4d5d-B073-52FBB55C646A}" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho\CurVer regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho\CurVer\ = "linkrdr.AIEbho.1" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A} regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\VersionIndependentProgID\ = "linkrdr.AIEbho" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho.1\ = "Adobe PDF Reader Link Helper" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho\CLSID regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\ProgID\ = "linkrdr.AIEbho.1" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho.1\CLSID regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\ProgID regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\ = "Adobe PDF Reader Link Helper" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\Programmable regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\Programmable\ regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho.1 regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\linkrdr.AIEbho.1\CLSID\ = "{EFF39A40-C163-4d5d-B073-52FBB55C646A}" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\TypeLib regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Wow6432Node\CLSID\{EFF39A40-C163-4d5d-B073-52FBB55C646A}\TypeLib\ = "{2B63B21A-4075-4298-A569-D8113F1D7045}" regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1628 wrote to memory of 900 1628 regsvr32.exe 27 PID 1628 wrote to memory of 900 1628 regsvr32.exe 27 PID 1628 wrote to memory of 900 1628 regsvr32.exe 27 PID 1628 wrote to memory of 900 1628 regsvr32.exe 27 PID 1628 wrote to memory of 900 1628 regsvr32.exe 27 PID 1628 wrote to memory of 900 1628 regsvr32.exe 27 PID 1628 wrote to memory of 900 1628 regsvr32.exe 27
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1628 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\a3650a61c71c582fdfeb434fd7ae7b78eefcc68a715060a1b27e85de32c27fe4.dll2⤵
- Registers COM server for autorun
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:900
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