Malware Analysis Report

2024-09-22 07:02

Sample ID 240604-c9m2jaag3x
Target 828f28bdc03ba59ccb9c87927432944f.bin
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 828f28bdc03ba59ccb9c87927432944f.bin 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 02:46

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 02:46

Reported

2024-06-04 02:49

Platform

win7-20240221-en

Max time kernel

144s

Max time network

148s

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-1-5-21-2297530677-1229052932-2803917579-1000\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 3068 set thread context of 1984 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/3068-0-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/3068-2-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/3068-1-0x0000000000567000-0x0000000000572000-memory.dmp

memory/3068-3-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/1984-4-0x0000000000080000-0x0000000000092000-memory.dmp

memory/1984-6-0x0000000000080000-0x0000000000092000-memory.dmp

memory/1984-5-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/1984-8-0x0000000000080000-0x0000000000092000-memory.dmp

memory/1984-10-0x0000000000080000-0x0000000000092000-memory.dmp

memory/3068-11-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/1984-12-0x000000007484E000-0x000000007484F000-memory.dmp

memory/1984-13-0x0000000074840000-0x0000000074F2E000-memory.dmp

memory/1984-14-0x000000007484E000-0x000000007484F000-memory.dmp

memory/1984-15-0x0000000074840000-0x0000000074F2E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 02:46

Reported

2024-06-04 02:49

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

151s

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-1-5-21-1337824034-2731376981-3755436523-1000\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 3860 set thread context of 1832 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 64.159.190.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
SY 94.232.249.90:8848 tcp
SY 94.232.249.90:8848 tcp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp

Files

memory/3860-2-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/3860-1-0x0000000000567000-0x0000000000572000-memory.dmp

memory/3860-0-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/1832-3-0x0000000000110000-0x0000000000122000-memory.dmp

memory/3860-4-0x0000000000400000-0x00000000005CA000-memory.dmp

memory/1832-5-0x000000007365E000-0x000000007365F000-memory.dmp

memory/1832-6-0x0000000073650000-0x0000000073E00000-memory.dmp

memory/1832-7-0x0000000073650000-0x0000000073E00000-memory.dmp