Malware Analysis Report

2024-12-07 03:35

Sample ID 241113-c82tasvhkp
Target a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe
SHA256 a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8
Tags
asyncrat feliz discovery persistence rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8

Threat Level: Known bad

The file a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat feliz discovery persistence rat

AsyncRat

Asyncrat family

Adds Run key to start application

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 02:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 02:45

Reported

2024-11-13 02:48

Platform

win7-20240903-en

Max time kernel

149s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe"

Signatures

AsyncRat

rat asyncrat

Asyncrat family

asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\NostraDesignerEditor = "C:\\Users\\Admin\\Music\\NostraDesignerUpdater\\NostraConvertVideo.exe" C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2532 set thread context of 2156 N/A C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe

"C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.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 octubre242024.casacam.net udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 octubre212024.giize.com udp

Files

memory/2532-3-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2532-0-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2532-6-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2532-2-0x0000000000513000-0x000000000052C000-memory.dmp

memory/2532-5-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2532-4-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2532-17-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2156-15-0x00000000002A0000-0x00000000002B2000-memory.dmp

memory/2156-18-0x0000000073E8E000-0x0000000073E8F000-memory.dmp

memory/2156-13-0x00000000002A0000-0x00000000002B2000-memory.dmp

memory/2532-11-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2156-10-0x00000000002A0000-0x00000000002B2000-memory.dmp

memory/2156-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2156-7-0x00000000002A0000-0x00000000002B2000-memory.dmp

memory/2156-19-0x0000000073E80000-0x000000007456E000-memory.dmp

memory/2156-21-0x0000000073E80000-0x000000007456E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 02:45

Reported

2024-11-13 02:48

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe"

Signatures

AsyncRat

rat asyncrat

Asyncrat family

asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NostraDesignerEditor = "C:\\Users\\Admin\\Music\\NostraDesignerUpdater\\NostraConvertVideo.exe" C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3320 set thread context of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.exe

"C:\Users\Admin\AppData\Local\Temp\a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre212024.giize.com udp
US 8.8.8.8:53 fuertefuerte.accesscam.org udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre242024.casacam.net udp
US 8.8.8.8:53 octubre212024.giize.com udp

Files

memory/3320-0-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/3320-2-0x0000000000513000-0x000000000052C000-memory.dmp

memory/3320-1-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/3320-5-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/3320-6-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2292-7-0x0000000000600000-0x0000000000612000-memory.dmp

memory/3320-9-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/3320-10-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/3320-3-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/3320-4-0x0000000000400000-0x00000000007FE000-memory.dmp

memory/2292-11-0x00000000745DE000-0x00000000745DF000-memory.dmp

memory/2292-12-0x00000000745D0000-0x0000000074D80000-memory.dmp

memory/3320-14-0x0000000000513000-0x000000000052C000-memory.dmp

memory/2292-15-0x00000000745D0000-0x0000000074D80000-memory.dmp