624c51cf3661ab3a589a5fcc1890d544d6b2da926eceba79e84f62a28b4f99ea

Analysis

max time kernel
44s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
06-11-2022 08:43

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General

Target

624c51cf3661ab3a589a5fcc1890d544d6b2da926eceba79e84f62a28b4f99ea.dll
Size

182KB
MD5

32c004ec44e45a3e713580de0f08b200
SHA1

e14459027e650ba6bbffd28d48f94aa1697825e3
SHA256

624c51cf3661ab3a589a5fcc1890d544d6b2da926eceba79e84f62a28b4f99ea
SHA512

e76479583434a7094179597689134dc141a3000b8d763f783e0f24cbaf4812cdbd5e6694126b6ed347eb23881f70ecd19ffae63286f3392df24d417ae8d85f48
SSDEEP

3072:sGE9+ZUsENVYbxeseM/ff1kWnBHbbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFyD:K4ZIud7PdnB7wvP6bQ7yMP+DE827RCNJ

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32	regsvr32.exe
Key created	\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}\1.0	regsvr32.exe
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\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}	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}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\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\\624c51cf3661ab3a589a5fcc1890d544d6b2da926eceba79e84f62a28b4f99ea.dll"	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\.key\	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

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27
PID 1348 wrote to memory of 1204	1348	regsvr32.exe	27

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\624c51cf3661ab3a589a5fcc1890d544d6b2da926eceba79e84f62a28b4f99ea.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\624c51cf3661ab3a589a5fcc1890d544d6b2da926eceba79e84f62a28b4f99ea.dll
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Modifies registry class
  PID:1204

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/1204-55-0x0000000000000000-mapping.dmp

Download
memory/1204-56-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/1348-54-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

Filesize
8KB

Download