flawedammyy | 4a49d8f530e16241fde09fe9a2d7ecbe57a531de3d97f879433af031ab498694

Analysis

max time kernel
156s
max time network
124s
platform
windows7_x64
resource
win7-20231025-en
resource tags

arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
submitted
01-12-2023 15:12

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General

Target

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.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:

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

description ioc process

File opened for modification \??\PhysicalDrive0 ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

pid process

2632 ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

pid	process
2632	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

description	pid	process	target process
PID 2708 wrote to memory of 2632	2708	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
PID 2708 wrote to memory of 2632	2708	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
PID 2708 wrote to memory of 2632	2708	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
PID 2708 wrote to memory of 2632	2708	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe	ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe

C:\Users\Admin\AppData\Local\Temp\ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
"C:\Users\Admin\AppData\Local\Temp\ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe"
1⤵
- Writes to the Master Boot Record (MBR)
PID:2724

C:\Users\Admin\AppData\Local\Temp\ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
"C:\Users\Admin\AppData\Local\Temp\ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2708

C:\Users\Admin\AppData\Local\Temp\ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe
"C:\Users\Admin\AppData\Local\Temp\ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a.exe"
2⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:2632

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

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Downloads

C:\ProgramData\AMMYY\settings3.bin

Filesize
327B

MD5
4cdd5de42195ee56f4fea4a922512505

SHA1
2f40337f564c3bdd33ad90f2911595e30490fcee

SHA256
0d1309d45baf03be46ac202a15de73a9d23b97c9bea937a8fbd360d413d06cd0

SHA512
78d4b9c3e4210b667115aec090e20170e9273155f30b6644efb33ac6782161d346ba4ebb2ea96fedcc41846017bb667baf93a5e55754fbe9cf2e66818dc5d3fb

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