flawedammyy | 0abfee8952acaf9510e25ca4d6f2cdfdc790f527bbfc06d72b63c188a161878b

Analysis

max time kernel
139s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2023 08:56

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

AA_v3.exe
Size

798KB
MD5

90aadf2247149996ae443e2c82af3730
SHA1

050b7eba825412b24e3f02d76d7da5ae97e10502
SHA256

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a
SHA512

eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be
SSDEEP

24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN

Score

10^/10

flawedammyy bootkit persistence trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy

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

Processes:

AA_v3.exe

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	AA_v3.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

AA_v3.exe

description	pid	Process	procid_target
PID 2684 wrote to memory of 3936	2684	AA_v3.exe	85
PID 2684 wrote to memory of 3936	2684	AA_v3.exe	85
PID 2684 wrote to memory of 3936	2684	AA_v3.exe	85

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
1⤵
- Writes to the Master Boot Record (MBR)
PID:4728

C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
"C:\Users\Admin\AppData\Local\Temp\AA_v3.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
  "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
  2⤵
  PID:3936

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AMMYY\settings3.bin

Filesize
327B

MD5
0737af19871fe3fc7781ef52e5c414eb

SHA1
315b9c269c50a1e446fa2d734d79e6fc2e6863ec

SHA256
ff2299a7cb7495cc0980e07f05e364dac2c9c427777edaaf3f474fcbd2b1b5e9

SHA512
510dddf4027c89fde854fea51676b8cb25e5cdeab3d44a38354a606f3f58f700e89e3b990aed2c8e22214dff141bad99a282ae041847a5dcf88a97890305e3e6

Download Submit