flawedammyy | 0aa73f2d4d2fc700b04a037ffc49f79b187c679b9a7773508c718b81af1b7af3

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2023 06:41

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General

Target

Device/HarddiskVolume3/Users/WissamIH/Downloads/Unconfirmed 517520.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:

Unconfirmed 517520.exe

description ioc process

File opened for modification \??\PhysicalDrive0 Unconfirmed 517520.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	Unconfirmed 517520.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Unconfirmed 517520.exe

description	pid	process	target process
PID 3388 wrote to memory of 4252	3388	Unconfirmed 517520.exe	Unconfirmed 517520.exe
PID 3388 wrote to memory of 4252	3388	Unconfirmed 517520.exe	Unconfirmed 517520.exe
PID 3388 wrote to memory of 4252	3388	Unconfirmed 517520.exe	Unconfirmed 517520.exe

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe"
1⤵
- Writes to the Master Boot Record (MBR)
PID:3652

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:3388

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe"
2⤵
PID:4252

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
4bf0ac95d3b461db4dfb66014c434321

SHA1
3265d5978fd4592da2086e2e0415b2f4c8f2a696

SHA256
65338dd1119d511b073f9602a3634e0427f2f7168e5ceb2e252de2a3ae3bb033

SHA512
6dbf4649bbf3a652e74bb380e95266b0a4e6692e04a39c74dafab02534a3701a46efa5be12bb4880707f309f2e4ca1f03778a1318349d1c9a2cee87c6b2cabd0

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