c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812

Analysis

max time kernel
185s
max time network
187s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 06:21

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General

Target

c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812.dll
Size

435KB
MD5

09400ce5661a66203f972b62f555d38b
SHA1

baeff48d5b45fa207079a23a6425f4d956731b2e
SHA256

c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812
SHA512

8469c11f811bb97b9c85ba1e4edfc464db8842205b00cff7249cbb39a8c73c7af0825f7fe75a4c58f43bed1f653d9331b71a6101f102989e9f5bc5a6b33c65e7
SSDEEP

12288:rXVQ5IHfzePx36jh7d60KzHBJ8If3qNctO3CwZXhhzVwvl:rC5enZQ4IfjtiC2hhid

Score

8^/10

bootkit persistence

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

flow	pid	Process
23	4280	rundll32.exe
27	4280	rundll32.exe
41	4280	rundll32.exe
45	4280	rundll32.exe
49	4280	rundll32.exe
53	4280	rundll32.exe
57	4280	rundll32.exe
67	4280	rundll32.exe
71	4280	rundll32.exe
73	4280	rundll32.exe

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	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\-23-723282	rundll32.exe
File created	C:\Windows\SysWOW64\25d	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 4280	4824	rundll32.exe	80
PID 4824 wrote to memory of 4280	4824	rundll32.exe	80
PID 4824 wrote to memory of 4280	4824	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4824
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  PID:4280

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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