flawedammyy | ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

Analysis

max time kernel
88s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
10-02-2024 04:13

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General

Target

file.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:

file.exe

description ioc process

File opened for modification \??\PhysicalDrive0 file.exe

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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

file.exe

description	pid	process	target process
PID 4752 wrote to memory of 4656	4752	file.exe	file.exe
PID 4752 wrote to memory of 4656	4752	file.exe	file.exe
PID 4752 wrote to memory of 4656	4752	file.exe	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Writes to the Master Boot Record (MBR)
PID:1844

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  PID:4656

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
af28973a8cbf2d49d771caf26adac8d8

SHA1
27675c43f9150b54d31bc0f21f726563c9b3c4e3

SHA256
899e126f2e966c7ad8ce4510e397c6549d1b771339e885f9c758f4cc0732b08f

SHA512
08fd4cd0ae7ea8c70a49728b3308449512e19bccb17a403f49683a213faa5af9ffe1cd96ca119c7864797335be761029ba2ac78fef9aa86ea11e9f452487448c

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