ab5934829e20ce6ca654a3a4d8a41f29e76ad343c0b8800fe6c8bbfec6a19b6f

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 03:04

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General

Target

7bf98e417db03ef91cbb11f6262525a3.dll
Size

81KB
MD5

7bf98e417db03ef91cbb11f6262525a3
SHA1

9de1bfc3c6a14c707cd7fafe3d9c0f6bf0a4a873
SHA256

ab5934829e20ce6ca654a3a4d8a41f29e76ad343c0b8800fe6c8bbfec6a19b6f
SHA512

01bad2102e003fba9494a4eac9c72654dbe8a85506f8ffd6c9cc5e2b2ad7865641f4c9c24d07670ef9b300b03588b255af73d27676a8b7958bd7953fad1fb341
SSDEEP

1536:NGn8Aa3ECMjYC51iVQmsRfhlw44AEya+dbBFn1:NGn8ABjYC5Gzs1PcAEya+dbBJ

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
2776	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28
PID 1244 wrote to memory of 2776	1244	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bf98e417db03ef91cbb11f6262525a3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bf98e417db03ef91cbb11f6262525a3.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  PID:2776

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/2776-0-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/2776-1-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download