56e62518fdf791d5c5f673dcc004b0569c5dd4108e2873adf16cae76fec91e5d

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 16:37

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General

Target

$PLUGINSDIR/HTTP_ASF_SOURCE.dll
Size

511KB
MD5

2ca0666cb7eebc4f31d1b1cd5567defa
SHA1

57937bc69d62e8405742137b94172b129274c77d
SHA256

5ccfce12fdeb592955cd14154446374a547864a6b5ef1a5a5d9cd801121a0128
SHA512

bac83324d390f961aec228ddee702a0709e9e59501500592e8fc5f30e0236719836b86c880e9cc90af3747c2b23dcce7ce1b7b29121740c82a0b9fb8fc086e41
SSDEEP

6144:xEBjCmsazwA6exhQWHb7Do9b2GRPKT1E9o5H4G/VmKEYTzKKAmKCetU0ub7lqE:w+m3P6exhQW77TiSECrYKfTmSrVqE

Score

1^/10

Malware Config

Signatures

Modifies registry class 21 IoCs

Processes:

regsvr32.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{B999A9D1-931E-45C9-836B-90ED79072E41}\FilterData = 0200000000002000020000000000000030706933080000000000000001000000000000000000000030747933000000006000000070000000317069330800000000000000010000000000000000000000307479330000000080000000700000007669647300001000800000aa00389b71000000000000000000000000000000006175647300001000800000aa00389b71	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B999A9D1-931E-45C9-836B-90ED79072E41}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\Instance\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\FriendlyName	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{B999A9D1-931E-45C9-836B-90ED79072E41}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B999A9D1-931E-45C9-836B-90ED79072E41}\ = "zxb_http_asf_source"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B999A9D1-931E-45C9-836B-90ED79072E41}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{B999A9D1-931E-45C9-836B-90ED79072E41}\CLSID = "{B999A9D1-931E-45C9-836B-90ED79072E41}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\Instance\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\CLSID = "{1CA738D6-B6B5-4F25-B00B-113BAD14925C}"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\Instance\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\FilterData = 02000000000000000000000000000000	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$PLUGINSDIR\\HTTP_ASF_SOURCE.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{B999A9D1-931E-45C9-836B-90ED79072E41}\FriendlyName = "zxb_http_asf_source"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B999A9D1-931E-45C9-836B-90ED79072E41}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\Instance\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\Instance	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1CA738D6-B6B5-4F25-B00B-113BAD14925C}\	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B999A9D1-931E-45C9-836B-90ED79072E41}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$PLUGINSDIR\\HTTP_ASF_SOURCE.dll"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe
PID 2236 wrote to memory of 1048	2236	regsvr32.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\HTTP_ASF_SOURCE.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\HTTP_ASF_SOURCE.dll
2⤵
- Modifies registry class
PID:1048

MITRE ATT&CK Matrix

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Downloads

memory/1048-0-0x0000000001F00000-0x0000000002083000-memory.dmp

Filesize
1.5MB

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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