c75a864489da2b16ee3b6b7fb6d6c90ce3d668f53c6e89ade94b7253f0140f0b

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 14:26

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General

Target

ac1a756cb4c031c704d17f497c116598.dll
Size

88KB
MD5

ac1a756cb4c031c704d17f497c116598
SHA1

8590ff7c484e3cbb07dc36bae59fc8188ab0751e
SHA256

c75a864489da2b16ee3b6b7fb6d6c90ce3d668f53c6e89ade94b7253f0140f0b
SHA512

50d64ff911a86f61c1218f4ad2560e988501881df15a2d85e8eac6c62d875fa49102e21701133d3c542d2631e8f792cb4844e318d516818791a5ba7042799e9d
SSDEEP

1536:v+I5Stw6oYKrQmL74Ri0X7WjtpyBR1uABuCE7ToBwfRdvX/g/:vB5cZoYKrl4RieyZsBHuABIoBwrnC

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
2320	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28
PID 2340 wrote to memory of 2320	2340	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac1a756cb4c031c704d17f497c116598.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac1a756cb4c031c704d17f497c116598.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  PID:2320

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/2320-0-0x00000000001A0000-0x00000000001AA000-memory.dmp

Filesize
40KB

Download
memory/2320-1-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download
memory/2320-4-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download