Malware Analysis Report

2024-11-30 21:48

Sample ID 230211-vvaf1adc22
Target MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe
SHA256 465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c
Tags
purecrypter downloader loader agenttesla collection keylogger spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c

Threat Level: Known bad

The file MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe was found to be: Known bad.

Malicious Activity Summary

purecrypter downloader loader agenttesla collection keylogger spyware stealer trojan

AgentTesla

Purecrypter family

PureCrypter

Checks computer location settings

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

outlook_office_path

outlook_win_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-02-11 17:18

Signatures

Purecrypter family

purecrypter

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-11 17:18

Reported

2023-02-11 17:24

Platform

win7-20221111-en

Max time kernel

237s

Max time network

336s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe

"C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 664 -s 1184

Network

Country Destination Domain Proto
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.42.13:443 onedrive.live.com tcp

Files

memory/664-54-0x00000000000B0000-0x00000000000BC000-memory.dmp

memory/664-55-0x0000000075671000-0x0000000075673000-memory.dmp

memory/1756-56-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-11 17:18

Reported

2023-02-11 17:21

Platform

win10v2004-20220901-en

Max time kernel

135s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

PureCrypter

loader downloader purecrypter

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe N/A

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4848 set thread context of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.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 4848 wrote to memory of 3816 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4848 wrote to memory of 3816 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4848 wrote to memory of 3816 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4848 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe

"C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==

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 onedrive.live.com udp
US 13.107.42.13:443 onedrive.live.com tcp
US 8.8.8.8:53 zerufq.ch.files.1drv.com udp
US 13.107.42.12:443 zerufq.ch.files.1drv.com tcp
US 8.253.135.112:80 tcp
US 8.253.135.112:80 tcp
NL 104.80.225.205:443 tcp
US 20.189.173.4:443 tcp
US 8.8.8.8:53 api.ipify.org udp
US 104.237.62.211:443 api.ipify.org tcp

Files

memory/4848-132-0x0000000000D30000-0x0000000000D3C000-memory.dmp

memory/4848-133-0x0000000005BF0000-0x0000000006194000-memory.dmp

memory/4848-134-0x00000000056E0000-0x0000000005772000-memory.dmp

memory/4848-135-0x0000000007380000-0x00000000073A2000-memory.dmp

memory/3816-136-0x0000000000000000-mapping.dmp

memory/3816-137-0x0000000004A20000-0x0000000004A56000-memory.dmp

memory/3816-138-0x00000000051B0000-0x00000000057D8000-memory.dmp

memory/3816-139-0x00000000057E0000-0x0000000005846000-memory.dmp

memory/3816-140-0x0000000005940000-0x00000000059A6000-memory.dmp

memory/3816-141-0x0000000006040000-0x000000000605E000-memory.dmp

memory/3816-142-0x0000000007880000-0x0000000007EFA000-memory.dmp

memory/3816-143-0x0000000006550000-0x000000000656A000-memory.dmp

memory/4704-144-0x0000000000000000-mapping.dmp

memory/4704-145-0x0000000000400000-0x0000000000430000-memory.dmp

memory/4704-146-0x00000000066C0000-0x00000000066CA000-memory.dmp

memory/4704-147-0x0000000006910000-0x0000000006960000-memory.dmp

memory/4704-148-0x0000000006B30000-0x0000000006CF2000-memory.dmp