Malware Analysis Report

2024-10-16 05:09

Sample ID 240816-hhyxlsvdqp
Target rh111.exe
SHA256 ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a
Tags
flawedammyy bootkit discovery persistence trojan ammyyadmin
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

ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

Threat Level: Known bad

The file rh111.exe was found to be: Known bad.

Malicious Activity Summary

flawedammyy bootkit discovery persistence trojan ammyyadmin

AmmyyAdmin payload

Ammyyadmin family

FlawedAmmyy RAT

Writes to the Master Boot Record (MBR)

System Location Discovery: System Language Discovery

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 06:44

Signatures

AmmyyAdmin payload

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

Ammyyadmin family

ammyyadmin

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 06:44

Reported

2024-08-16 06:47

Platform

win7-20240708-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\rh111.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\rh111.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\rh111.exe

"C:\Users\Admin\AppData\Local\Temp\rh111.exe"

C:\Users\Admin\AppData\Local\Temp\rh111.exe

"C:\Users\Admin\AppData\Local\Temp\rh111.exe" -service -lunch

C:\Users\Admin\AppData\Local\Temp\rh111.exe

"C:\Users\Admin\AppData\Local\Temp\rh111.exe"

Network

N/A

Files

C:\ProgramData\AMMYY\settings3.bin

MD5 15248b10e6dd7e3406f4f64063746caa
SHA1 403d8b98d2a47479605530b36e74b1100540acd5
SHA256 999b4396ac41cf4e1e67b874dc1491bb192e015ab5f3284debd4088e3b514b37
SHA512 b112ab4378ebc6e8f2952a47dd7c0d118987018e9b586bfd11c65c1ac8ab33426f59100cfb514266ab62e0c35cbfa650aed91acf81c792e261f2b998189efe02

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 06:44

Reported

2024-08-16 06:47

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\rh111.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\rh111.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rh111.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\rh111.exe

"C:\Users\Admin\AppData\Local\Temp\rh111.exe"

C:\Users\Admin\AppData\Local\Temp\rh111.exe

"C:\Users\Admin\AppData\Local\Temp\rh111.exe" -service -lunch

C:\Users\Admin\AppData\Local\Temp\rh111.exe

"C:\Users\Admin\AppData\Local\Temp\rh111.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 68.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

C:\ProgramData\AMMYY\settings3.bin

MD5 27dadd59bd2f673aed38ea464bdaf683
SHA1 913e9be810c4bef8359757de7157a574522cea8e
SHA256 d5222c432d7870cec22e7df697c9379138866580d2e5e98fabfad04a5fc66f97
SHA512 84271ff37b4e60f2f3b6c8b8160434b2735ff8fcae1d1b46215d67735b92dda6333fe740e4c588fe2041ceb1bf54d7cc5b6b22169729e630f80718e0578f5c35