Malware Analysis Report

2025-08-05 12:32

Sample ID 230501-yyn1caac5y
Target stub.exe.bin
SHA256 cd279fe4806f1925c2985f4a3f4a0052b140e85ffad9a2e46b27f8ff2cd99baa
Tags
asyncrat redline default infostealer rat spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cd279fe4806f1925c2985f4a3f4a0052b140e85ffad9a2e46b27f8ff2cd99baa

Threat Level: Known bad

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

Malicious Activity Summary

asyncrat redline default infostealer rat spyware stealer

RedLine

Async RAT payload

Asyncrat family

AsyncRat

Detects Redline Stealer samples

Async RAT payload

Reads user/profile data of web browsers

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-05-01 20:11

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: behavioral2

Detonation Overview

Submitted

2023-05-01 20:11

Reported

2023-05-01 20:16

Platform

win10v2004-20230220-en

Max time kernel

128s

Max time network

176s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Detects Redline Stealer samples

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

RedLine

infostealer redline

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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 139.238.32.23.in-addr.arpa udp
US 20.189.173.7:443 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 93.184.221.240:80 tcp
US 8.8.8.8:53 bahrdevo.endoftheinternet.org udp
CA 192.99.180.181:8808 bahrdevo.endoftheinternet.org tcp
US 8.8.8.8:53 181.180.99.192.in-addr.arpa udp
US 8.8.8.8:53 38.146.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 93.184.221.240:80 tcp
NL 173.223.113.164:443 tcp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 32.146.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp

Files

memory/1160-133-0x0000000000610000-0x0000000000626000-memory.dmp

memory/1160-134-0x0000000004FD0000-0x0000000004FE0000-memory.dmp

memory/1160-135-0x0000000004FD0000-0x0000000004FE0000-memory.dmp

memory/1160-136-0x0000000005D10000-0x00000000062B4000-memory.dmp

memory/1160-137-0x0000000005940000-0x00000000059D2000-memory.dmp

memory/1160-138-0x0000000005900000-0x000000000590A000-memory.dmp

memory/1160-139-0x00000000064A0000-0x000000000653C000-memory.dmp

memory/1160-140-0x0000000006400000-0x0000000006466000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-05-01 20:11

Reported

2023-05-01 20:16

Platform

win7-20230220-en

Max time kernel

36s

Max time network

162s

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 bahrdevo.endoftheinternet.org udp
CA 192.99.180.181:8808 bahrdevo.endoftheinternet.org tcp

Files

memory/1632-54-0x0000000001160000-0x0000000001176000-memory.dmp

memory/1632-55-0x0000000000DE0000-0x0000000000E20000-memory.dmp

memory/1632-63-0x0000000000DE0000-0x0000000000E20000-memory.dmp