59c995dd4d2e86e4fb4f34f353fd0b8a23f44a2774599a1e864514d0f74e6ae7

Analysis

max time kernel
136s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
20/06/2024, 12:11

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
efsbar.dll
Size 150KB
Sample240620-pczehs1bpr
SHA256 61dc360cc369d3718dba0f9abef8abdef86631f6926758935f29d0b12e6cf8cc
MD5 06ba55c2784d6be5bd400a469e2a602f
SHA1 9c0942b4941430e79bd94735a9c5b9b5ab99424c
SHA512 502c8c2c8b8294454db8bc38d6b5cc11355c33e22533951622284c3e96f3e568d08173780d84a029a090041e67c6bcd9568150ce28acc3c2aaa83a9fe5cc6c1d
SSDEEP 1536:WeBE9b4kRDjvf7fE3ojwG/Ih/3RtR8izcT2QsbIpF4srfQuRRoFvC0U0ZaRKrhC/:WeBXkjvjE3AAxLR86cL71RoF7wu2cY
MD5 SHA1 SHA512 SSDEEP

Score

1^/10

Malware Config

Signatures

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ = "_CSideBar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CSideBar\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\ = "CHandler"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efsbar.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\VERSION	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efsbar.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\ProxyStubClsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\TypeLib\ = "{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\ProgID\ = "efindersidebar.CHandler"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ = "_CSideBar"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\ = "efindersidebar.CSideBar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CSideBar\Clsid\ = "{6A294C45-07CC-426C-9512-6742053E462C}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\VERSION	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\TypeLib\ = "{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\VERSION\ = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ = "CSideBar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CSideBar	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\ = "efindersidebar"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\TypeLib\ = "{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CSideBar\ = "efindersidebar.CSideBar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\ = "efindersidebar.CHandler"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\TypeLib\ = "{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CHandler\Clsid\ = "{D815AB8A-E840-4054-B37D-943893116452}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\ProgID\ = "efindersidebar.CSideBar"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A294C45-07CC-426C-9512-6742053E462C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efsbar.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CHandler	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D815AB8A-E840-4054-B37D-943893116452}\VERSION\ = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\efindersidebar.CHandler\ = "efindersidebar.CHandler"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F8A3508D-B8F0-4619-94D1-A85A54B9ABAE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\TypeLib\ = "{22FD679B-DCE6-4B67-BC7A-EBE8326D40DB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BEA1FA35-AC92-4978-8556-0AFCD9B52FA2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2660	2484	regsvr32.exe	82
PID 2484 wrote to memory of 2660	2484	regsvr32.exe	82
PID 2484 wrote to memory of 2660	2484	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efsbar.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\efsbar.dll
  2⤵
  - Modifies registry class
  PID:2660

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads