Malware Analysis Report

2025-08-06 03:43

Sample ID 230501-ga87yaee84
Target stub.exe
SHA256 64349010e1fbfa33f4ea4f3ec59950d2a7b44874488902a78cee4544dfecce33
Tags
asyncrat default rat spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

64349010e1fbfa33f4ea4f3ec59950d2a7b44874488902a78cee4544dfecce33

Threat Level: Known bad

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

Malicious Activity Summary

asyncrat default rat spyware stealer

Async RAT payload

Asyncrat family

AsyncRat

Async RAT payload

Reads user/profile data of web browsers

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-05-01 05:37

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-05-01 05:37

Reported

2023-05-01 05:39

Platform

win7-20230220-en

Max time kernel

29s

Max time network

153s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 Modyhr.ddnsfree.com udp
US 45.80.158.121:7707 Modyhr.ddnsfree.com tcp

Files

memory/1696-54-0x00000000013C0000-0x00000000013D6000-memory.dmp

memory/1696-55-0x0000000001360000-0x00000000013A0000-memory.dmp

memory/1696-73-0x0000000001360000-0x00000000013A0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-05-01 05:37

Reported

2023-05-01 05:39

Platform

win10v2004-20230220-en

Max time kernel

62s

Max time network

147s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 Modyhr.ddnsfree.com udp
US 45.80.158.121:8808 Modyhr.ddnsfree.com tcp
US 8.8.8.8:53 121.158.80.45.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 52.152.108.96:443 tcp
IE 20.50.73.9:443 tcp
US 93.184.221.240:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 93.184.221.240:80 tcp

Files

memory/2128-133-0x0000000000DD0000-0x0000000000DE6000-memory.dmp

memory/2128-134-0x00000000056A0000-0x00000000056B0000-memory.dmp

memory/2128-135-0x0000000006230000-0x00000000067D4000-memory.dmp

memory/2128-136-0x0000000005E60000-0x0000000005EF2000-memory.dmp

memory/2128-137-0x0000000005E40000-0x0000000005E4A000-memory.dmp

memory/2128-138-0x00000000069C0000-0x0000000006A5C000-memory.dmp

memory/2128-139-0x0000000006A60000-0x0000000006AC6000-memory.dmp

memory/2128-140-0x00000000056A0000-0x00000000056B0000-memory.dmp