96820541e563ae6bd9e97a0ec95bcbc5e2044dc89574d3c8d0b7b40edc276222 | Triage

Analysis

max time kernel
118s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18-03-2024 21:34

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General

Target

$SYSDIR/COMCAT.dll
Size

21KB
MD5

3b180da2b50b954a55fe37afba58d428
SHA1

c2a409311853ad4608418e790621f04155e55000
SHA256

96d04cdfaf4f4d7b8722b139a15074975d4c244302f78034b7be65df1a92fd03
SHA512

cf94ad749d91169078b8829288a2fc8de86ec2fe83d89dc27d54d03c73c0deca66b5d83abbeaa1ff09d0acac4c4352be6502945b5187ecde952cbb08037d07e8
SSDEEP

384:23Fob3slaN3oF1fHICOoMzMv/QTIBjDVquODJXsUW7ftWs6:Yo7s28JnOxzMv/QsBjRqugXspd

Score

1^/10

Malware Config

Signatures

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED3-2438-11CF-A3DB-080036F12502}\409 = "Embeddable Objects"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED4-2438-11CF-A3DB-080036F12502}\409 = "Controls"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED9-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0002E005-0000-0000-C000-000000000046}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED8-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED8-2438-11CF-A3DB-080036F12502}\409 = "Document Objects"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0002E005-0000-0000-C000-000000000046}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED4-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED9-2438-11CF-A3DB-080036F12502}\409 = "_Printable Objects"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED3-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Component Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}\409 = "Automation Objects"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28
PID 2844 wrote to memory of 2856	2844	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\COMCAT.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\COMCAT.dll
  2⤵
  - Modifies registry class
  PID:2856

Network

MITRE ATT&CK Matrix

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