c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812

Analysis

max time kernel
183s
max time network
189s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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 8 IoCs

flow	pid	Process
7	932	rundll32.exe
9	932	rundll32.exe
10	932	rundll32.exe
11	932	rundll32.exe
12	932	rundll32.exe
13	932	rundll32.exe
14	932	rundll32.exe
15	932	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\-5990-11979	rundll32.exe
File created	C:\Windows\SysWOW64\278	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 976 wrote to memory of 932	976	rundll32.exe	28
PID 976 wrote to memory of 932	976	rundll32.exe	28
PID 976 wrote to memory of 932	976	rundll32.exe	28
PID 976 wrote to memory of 932	976	rundll32.exe	28
PID 976 wrote to memory of 932	976	rundll32.exe	28
PID 976 wrote to memory of 932	976	rundll32.exe	28
PID 976 wrote to memory of 932	976	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6a6e8fb770c9d9ba417208c828873fb74170417d18d5e15c4b37792a344e812.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:976
- 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:932

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

Replay Monitor

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Downloads

memory/932-55-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

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