Malware Analysis Report

2025-08-06 03:44

Sample ID 230501-f9z8msee79
Target stub.exe
SHA256 64349010e1fbfa33f4ea4f3ec59950d2a7b44874488902a78cee4544dfecce33
Tags
rat default asyncrat 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

rat default asyncrat spyware stealer

AsyncRat

Async RAT payload

Asyncrat family

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 05:35

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 05:35

Reported

2023-05-01 05:37

Platform

win7-20230220-en

Max time kernel

30s

Max time network

152s

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 45.80.158.121:6606 Modyhr.ddnsfree.com tcp

Files

memory/1704-54-0x00000000003B0000-0x00000000003C6000-memory.dmp

memory/1704-55-0x0000000002020000-0x0000000002060000-memory.dmp

memory/1704-73-0x0000000002020000-0x0000000002060000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-05-01 05:35

Reported

2023-05-01 05:37

Platform

win10v2004-20230220-en

Max time kernel

135s

Max time network

152s

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 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 Modyhr.ddnsfree.com udp
US 45.80.158.121:6606 Modyhr.ddnsfree.com tcp
US 8.8.8.8:53 121.158.80.45.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 40.125.122.176:443 tcp
IE 20.50.73.9:443 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 173.223.113.164:443 tcp
US 40.125.122.176:443 tcp
US 8.8.8.8:53 63.13.109.52.in-addr.arpa udp
US 13.107.4.50:80 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 40.125.122.176:443 tcp
US 40.125.122.176:443 tcp
US 40.125.122.176:443 tcp
US 40.125.122.176:443 tcp

Files

memory/1512-133-0x0000000000980000-0x0000000000996000-memory.dmp

memory/1512-134-0x0000000005350000-0x0000000005360000-memory.dmp

memory/1512-135-0x0000000005E10000-0x00000000063B4000-memory.dmp

memory/1512-136-0x0000000005A10000-0x0000000005AA2000-memory.dmp

memory/1512-137-0x00000000059F0000-0x00000000059FA000-memory.dmp

memory/1512-138-0x0000000006500000-0x000000000659C000-memory.dmp

memory/1512-139-0x00000000065A0000-0x0000000006606000-memory.dmp

memory/1512-140-0x0000000005350000-0x0000000005360000-memory.dmp