c45c96bef6c842c4e20d3885dac2cb59b6eb520681a5227be5818aa814252bfb

Analysis

max time kernel
2s
max time network
35s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 13:39

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General

Target

c45c96bef6c842c4e20d3885dac2cb59b6eb520681a5227be5818aa814252bfb.dll
Size

182KB
MD5

5ba517b6734dafa1de1510d969dff4f7
SHA1

b069cecd2cfe38358cca5059e1efdf3773ea22b9
SHA256

c45c96bef6c842c4e20d3885dac2cb59b6eb520681a5227be5818aa814252bfb
SHA512

8b28527830fe2cabf5b6d109fa6ec46b7852732b45d075fbc8b6441d717dd4a434fec98f6fb3a2ed0b26b895786bcd86be2be867216f97ea957bab74eba21e9e
SSDEEP

3072:HU0WHY5xjRJIpxeKxHFrkWnLCbbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFyVUe:HZWHYHRJIpNxHVnwwvP6bQ7yMP+DE82e

Score

6^/10

bootkit persistence

Malware Config

Signatures

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	regsvr32.exe

Modifies registry class 17 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\ = "loader 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c45c96bef6c842c4e20d3885dac2cb59b6eb520681a5227be5818aa814252bfb.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL\AppID = "{D103EBF9-6DD5-4715-863A-00AA27C7935A}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28
PID 1224 wrote to memory of 940	1224	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\c45c96bef6c842c4e20d3885dac2cb59b6eb520681a5227be5818aa814252bfb.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\c45c96bef6c842c4e20d3885dac2cb59b6eb520681a5227be5818aa814252bfb.dll
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Modifies registry class
  PID:940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/940-56-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

Download
memory/1224-54-0x000007FEFC091000-0x000007FEFC093000-memory.dmp

Filesize
8KB

Download