Malware Analysis Report

2024-11-30 07:04

Sample ID 240601-h4x77sdf8x
Target YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe
SHA256 15c04e22491f8e845da0adff79abd677fc12388ccea0f7c031c679ef175e3228
Tags
agenttesla keylogger 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

15c04e22491f8e845da0adff79abd677fc12388ccea0f7c031c679ef175e3228

Threat Level: Known bad

The file YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe was found to be: Known bad.

Malicious Activity Summary

agenttesla keylogger spyware stealer trojan

AgentTesla

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Reads WinSCP keys stored on the system

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 07:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-01 07:18

Reported

2024-06-01 07:20

Platform

win7-20240220-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2208 set thread context of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 1744 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 2208 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\system32\WerFault.exe
PID 2208 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\system32\WerFault.exe
PID 2208 wrote to memory of 2932 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe

"C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe"

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2208 -s 652

Network

N/A

Files

memory/2208-0-0x000007FEF5BA3000-0x000007FEF5BA4000-memory.dmp

memory/2208-1-0x0000000001160000-0x000000000116A000-memory.dmp

memory/2208-2-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

memory/2208-3-0x0000000000EC0000-0x0000000000F54000-memory.dmp

memory/1744-4-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1744-17-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-13-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-10-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-8-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-15-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-6-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1744-18-0x000000007488E000-0x000000007488F000-memory.dmp

memory/1744-19-0x0000000074880000-0x0000000074F6E000-memory.dmp

memory/2208-20-0x000007FEF5BA3000-0x000007FEF5BA4000-memory.dmp

memory/2208-21-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

memory/1744-22-0x000000007488E000-0x000000007488F000-memory.dmp

memory/1744-23-0x0000000074880000-0x0000000074F6E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 07:18

Reported

2024-06-01 07:20

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Reads WinSCP keys stored on the system

spyware stealer

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 700 set thread context of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 700 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe

"C:\Users\Admin\AppData\Local\Temp\YapiKrediInternetBankaciligi_Dekont_20240531_266_40240020.exe"

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
NL 52.111.243.29:443 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/700-1-0x00007FFE7DFB3000-0x00007FFE7DFB5000-memory.dmp

memory/700-0-0x00000271AFF70000-0x00000271AFF7A000-memory.dmp

memory/700-2-0x00000271CA4D0000-0x00000271CA564000-memory.dmp

memory/700-3-0x00007FFE7DFB0000-0x00007FFE7EA71000-memory.dmp

memory/4612-4-0x0000000000400000-0x0000000000440000-memory.dmp

memory/4612-5-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

memory/4612-6-0x00000000057F0000-0x0000000005D94000-memory.dmp

memory/4612-7-0x0000000005240000-0x00000000052A6000-memory.dmp

memory/4612-8-0x0000000074D50000-0x0000000075500000-memory.dmp

memory/700-9-0x00007FFE7DFB0000-0x00007FFE7EA71000-memory.dmp

memory/4612-10-0x0000000006230000-0x0000000006280000-memory.dmp

memory/4612-11-0x0000000006320000-0x00000000063B2000-memory.dmp

memory/4612-12-0x00000000064E0000-0x00000000064EA000-memory.dmp

memory/4612-13-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

memory/4612-14-0x0000000074D50000-0x0000000075500000-memory.dmp