Malware Analysis Report

2024-08-06 12:59

Sample ID 240603-zwrh5ahb7y
Target 48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045
SHA256 48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045
Tags
asyncrat @microsoft 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

48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045

Threat Level: Known bad

The file 48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045 was found to be: Known bad.

Malicious Activity Summary

asyncrat @microsoft rat

AsyncRat

Detects file containing reversed ASEP Autorun registry keys

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-03 21:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 21:04

Reported

2024-06-03 21:06

Platform

win7-20240508-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1800 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\SysWOW64\WerFault.exe
PID 1800 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\SysWOW64\WerFault.exe
PID 1800 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\SysWOW64\WerFault.exe
PID 1800 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe

"C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1800 -s 536

Network

N/A

Files

memory/1800-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

memory/1800-1-0x0000000000DC0000-0x0000000000DDC000-memory.dmp

memory/1800-2-0x00000000747AE000-0x00000000747AF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 21:04

Reported

2024-06-03 21:06

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe"

Signatures

AsyncRat

rat asyncrat

Detects file containing reversed ASEP Autorun registry keys

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4044 set thread context of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4044 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 1796 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4044 wrote to memory of 3076 N/A C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Processes

C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe

"C:\Users\Admin\AppData\Local\Temp\48ebc663714ae75de7478dd0205b997244db6bf539e699ff3ab9533982b42045.exe"

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
DE 45.157.233.27:2222 tcp
US 8.8.8.8:53 27.233.157.45.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
DE 45.157.233.27:2222 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 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
DE 45.157.233.27:2222 tcp
US 8.8.8.8:53 30.73.42.20.in-addr.arpa udp

Files

memory/4044-0-0x00000000750EE000-0x00000000750EF000-memory.dmp

memory/4044-1-0x0000000000FC0000-0x0000000000FDC000-memory.dmp

memory/4044-2-0x0000000006000000-0x00000000065A4000-memory.dmp

memory/4044-3-0x0000000005A50000-0x0000000005AE2000-memory.dmp

memory/4044-4-0x00000000059D0000-0x00000000059DA000-memory.dmp

memory/4044-5-0x0000000005CF0000-0x0000000005D66000-memory.dmp

memory/4044-6-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/4044-7-0x00000000750EE000-0x00000000750EF000-memory.dmp

memory/4044-8-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/4044-9-0x00000000059C0000-0x00000000059D4000-memory.dmp

memory/4044-10-0x0000000005C50000-0x0000000005C6E000-memory.dmp

memory/3076-11-0x0000000000400000-0x0000000000412000-memory.dmp

memory/3076-13-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/4044-14-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/3076-15-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/3076-16-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/3076-17-0x00000000750E0000-0x0000000075890000-memory.dmp