Malware Analysis Report

2024-10-16 05:11

Sample ID 230920-hf58xagf56
Target Unconfirmed 517520.crdownload
SHA256 0aa73f2d4d2fc700b04a037ffc49f79b187c679b9a7773508c718b81af1b7af3
Tags
ammyyadmin flawedammyy bootkit persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0aa73f2d4d2fc700b04a037ffc49f79b187c679b9a7773508c718b81af1b7af3

Threat Level: Known bad

The file Unconfirmed 517520.crdownload was found to be: Known bad.

Malicious Activity Summary

ammyyadmin flawedammyy bootkit persistence trojan

AmmyyAdmin payload

Ammyyadmin family

FlawedAmmyy RAT

Writes to the Master Boot Record (MBR)

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-20 06:41

Signatures

AmmyyAdmin payload

Description Indicator Process Target
N/A N/A N/A N/A

Ammyyadmin family

ammyyadmin

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-20 06:41

Reported

2023-09-20 06:44

Platform

win7-20230831-en

Max time kernel

120s

Max time network

123s

Command Line

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

Signatures

FlawedAmmyy RAT

trojan flawedammyy

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume3\Users\WissamIH\Downloads\Unconfirmed 517520.exe N/A

Processes

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"

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

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"

Network

N/A

Files

C:\ProgramData\AMMYY\settings3.bin

MD5 9cf7dbafc73193c3813920793b9ad924
SHA1 6f5b6f291eecac2c66a8635f0074a879b71d54f6
SHA256 a08d9c83e04425e1246dfbf0d5f94b8061ee1963e4ddb2dcd3166de2981e602d
SHA512 04a874a6ac352e6ea79142f3be28af1f9434788b7955749414d4a5119721e798215af196b2b2b084b84f99999725d9e3391a9873ed3982be54b3af6fe360a5ef

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-20 06:41

Reported

2023-09-20 06:44

Platform

win10v2004-20230915-en

Max time kernel

141s

Max time network

150s

Command Line

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

Signatures

Processes

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"

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

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"

Network

Country Destination Domain Proto
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 169.117.168.52.in-addr.arpa udp

Files

C:\ProgramData\AMMYY\settings3.bin

MD5 4bf0ac95d3b461db4dfb66014c434321
SHA1 3265d5978fd4592da2086e2e0415b2f4c8f2a696
SHA256 65338dd1119d511b073f9602a3634e0427f2f7168e5ceb2e252de2a3ae3bb033
SHA512 6dbf4649bbf3a652e74bb380e95266b0a4e6692e04a39c74dafab02534a3701a46efa5be12bb4880707f309f2e4ca1f03778a1318349d1c9a2cee87c6b2cabd0