Malware Analysis Report

2024-12-07 14:14

Sample ID 241115-ctfbra1jbq
Target a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779
SHA256 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779
Tags
agenttesla discovery keylogger persistence spyware stealer trojan
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

a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779

Threat Level: Known bad

The file a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779 was found to be: Known bad.

Malicious Activity Summary

agenttesla discovery keylogger persistence spyware stealer trojan

AgentTesla

Agenttesla family

Looks up external IP address via web service

Adds Run key to start application

AutoIT Executable

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-15 02:21

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-15 02:21

Reported

2024-11-15 02:24

Platform

win7-20241023-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

agenttesla

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\ZUHFqcY = "C:\\Users\\Admin\\AppData\\Roaming\\ZUHFqcY\\ZUHFqcY.exe" C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1048 set thread context of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
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 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1048 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe

"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"

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

"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp

Files

memory/1048-6-0x0000000000980000-0x0000000000D80000-memory.dmp

memory/2396-7-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2396-9-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2396-11-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2396-12-0x000000007471E000-0x000000007471F000-memory.dmp

memory/2396-13-0x0000000074710000-0x0000000074DFE000-memory.dmp

memory/2396-15-0x000000007471E000-0x000000007471F000-memory.dmp

memory/2396-16-0x0000000074710000-0x0000000074DFE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-15 02:21

Reported

2024-11-15 02:24

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

agenttesla

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ZUHFqcY = "C:\\Users\\Admin\\AppData\\Roaming\\ZUHFqcY\\ZUHFqcY.exe" C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3008 set thread context of 3076 N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe

"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"

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

"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3008-6-0x0000000000FD0000-0x00000000013D0000-memory.dmp

memory/3076-7-0x0000000000400000-0x0000000000442000-memory.dmp

memory/3076-8-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

memory/3076-9-0x0000000005920000-0x0000000005EC4000-memory.dmp

memory/3076-10-0x00000000053E0000-0x0000000005446000-memory.dmp

memory/3076-11-0x0000000074CE0000-0x0000000075490000-memory.dmp

memory/3076-13-0x0000000006790000-0x00000000067E0000-memory.dmp

memory/3076-14-0x0000000006880000-0x0000000006912000-memory.dmp

memory/3076-15-0x0000000006820000-0x000000000682A000-memory.dmp

memory/3076-16-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

memory/3076-17-0x0000000074CE0000-0x0000000075490000-memory.dmp