b52886c98fb846b4f702f935e4bf61e9284d01ce2666c06581965b2093a6ae8e

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 09:33

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General

Target

40814d97a4160e16800cc12ad8998fb0.dll
Size

80KB
MD5

40814d97a4160e16800cc12ad8998fb0
SHA1

774b55ca36e8f731a62aa1d34b20c5ac99572d5e
SHA256

b52886c98fb846b4f702f935e4bf61e9284d01ce2666c06581965b2093a6ae8e
SHA512

de547a6642bc0a09f463d4dbdb59c01f08dd867aff299c979b26bd4f2b92ce2f5e300c22326686c0213af52680304502e98c39dc31f8410dea9162044a3662e7
SSDEEP

1536:PUMWDtEKPPyAzdqW2SufHMOQQwncFIgPCm:4DtECPyAz1pCH8QHmgP

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1940	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14
PID 2104 wrote to memory of 1940	2104	rundll32.exe	14

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\40814d97a4160e16800cc12ad8998fb0.dll,#1
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1940

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\40814d97a4160e16800cc12ad8998fb0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1940-0-0x00000000000D0000-0x00000000000D9000-memory.dmp

Filesize
36KB

Download
memory/1940-3-0x00000000000D0000-0x00000000000D9000-memory.dmp

Filesize
36KB

Download