Malware Analysis Report

2025-08-11 06:23

Sample ID 240403-nflr6ace21
Target DEKONT.exe
SHA256 95abf9af2641a81a79013a5b4db8b9b8dee2dfb370b12b0e97add77146dbcded
Tags
agenttesla 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

95abf9af2641a81a79013a5b4db8b9b8dee2dfb370b12b0e97add77146dbcded

Threat Level: Known bad

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

Malicious Activity Summary

agenttesla keylogger persistence spyware stealer trojan

AgentTesla

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-03 11:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-03 11:20

Reported

2024-04-03 11:22

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

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

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\DEKONT = "\"C:\\Users\\Admin\\DEKONT.exe\"" C:\Users\Admin\AppData\Local\Temp\DEKONT.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2408 set thread context of 2012 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

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

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

Network

N/A

Files

memory/2012-2-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-1-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-3-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-5-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2012-8-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-12-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-10-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2012-13-0x0000000073F50000-0x000000007463E000-memory.dmp

memory/2012-14-0x0000000004C50000-0x0000000004C90000-memory.dmp

memory/2012-15-0x0000000073F50000-0x000000007463E000-memory.dmp

memory/2012-16-0x0000000004C50000-0x0000000004C90000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-03 11:20

Reported

2024-04-03 11:22

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

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

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DEKONT = "\"C:\\Users\\Admin\\DEKONT.exe\"" C:\Users\Admin\AppData\Local\Temp\DEKONT.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4364 set thread context of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4364 wrote to memory of 4168 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 4364 wrote to memory of 4168 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 4364 wrote to memory of 4168 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4364 wrote to memory of 5004 N/A C:\Users\Admin\AppData\Local\Temp\DEKONT.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe

Processes

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

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

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 9.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 202.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 136.71.105.51.in-addr.arpa udp

Files

memory/5004-1-0x0000000000400000-0x0000000000442000-memory.dmp

memory/5004-2-0x0000000074FF0000-0x00000000757A0000-memory.dmp

memory/5004-3-0x0000000005F00000-0x00000000064A4000-memory.dmp

memory/5004-4-0x0000000005A50000-0x0000000005AB6000-memory.dmp

memory/5004-5-0x00000000058A0000-0x00000000058B0000-memory.dmp

memory/5004-6-0x0000000006910000-0x0000000006960000-memory.dmp

memory/5004-7-0x0000000006A00000-0x0000000006A92000-memory.dmp

memory/5004-8-0x0000000006990000-0x000000000699A000-memory.dmp

memory/5004-9-0x0000000074FF0000-0x00000000757A0000-memory.dmp

memory/5004-10-0x00000000058A0000-0x00000000058B0000-memory.dmp