Malware Analysis Report

2024-09-22 07:44

Sample ID 240604-envklace7y
Target 6f90db96909754a66e442cb115dfae60f4befe5de44cf8017ad08d49f6006ecb
SHA256 6f90db96909754a66e442cb115dfae60f4befe5de44cf8017ad08d49f6006ecb
Tags
asyncrat default persistence rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

6f90db96909754a66e442cb115dfae60f4befe5de44cf8017ad08d49f6006ecb

Threat Level: Known bad

The file 6f90db96909754a66e442cb115dfae60f4befe5de44cf8017ad08d49f6006ecb was found to be: Known bad.

Malicious Activity Summary

asyncrat default persistence rat

AsyncRat

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-04 04:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 04:05

Reported

2024-06-04 04:08

Platform

win7-20240508-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe"

Signatures

AsyncRat

rat asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\SmokerLtd = "C:\\Users\\Admin\\Documents\\Noments\\Toopan.exe" C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2128 set thread context of 2112 N/A C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe

"C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"

Network

Country Destination Domain Proto
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp

Files

memory/2128-2-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/2128-3-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/2128-1-0x0000000000567000-0x0000000000572000-memory.dmp

memory/2128-0-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/2112-5-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2112-4-0x0000000000080000-0x0000000000092000-memory.dmp

memory/2112-6-0x0000000000080000-0x0000000000092000-memory.dmp

memory/2112-10-0x0000000000080000-0x0000000000092000-memory.dmp

memory/2112-8-0x0000000000080000-0x0000000000092000-memory.dmp

memory/2128-11-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/2112-12-0x00000000749DE000-0x00000000749DF000-memory.dmp

memory/2112-13-0x00000000749D0000-0x00000000750BE000-memory.dmp

memory/2112-14-0x00000000749DE000-0x00000000749DF000-memory.dmp

memory/2112-15-0x00000000749D0000-0x00000000750BE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 04:05

Reported

2024-06-04 04:08

Platform

win10v2004-20240426-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe"

Signatures

AsyncRat

rat asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SmokerLtd = "C:\\Users\\Admin\\Documents\\Noments\\Toopan.exe" C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 896 set thread context of 2592 N/A C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe

"C:\Users\Admin\AppData\Local\Temp\b98132aea04a11317b8756786a12f51adbabe38e90d43fdfbc3095e1ad4c4e9a.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp

Files

memory/896-0-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/896-1-0x0000000000567000-0x0000000000572000-memory.dmp

memory/896-3-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/896-2-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/2592-4-0x0000000000E80000-0x0000000000E92000-memory.dmp

memory/896-5-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/2592-6-0x000000007420E000-0x000000007420F000-memory.dmp

memory/2592-7-0x0000000074200000-0x00000000749B0000-memory.dmp

memory/2592-8-0x0000000074200000-0x00000000749B0000-memory.dmp