Analysis Overview
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
AgentTesla
Purecrypter family
Checks computer location settings
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Suspicious use of SetThreadContext
Program crash
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
outlook_win_path
Suspicious use of AdjustPrivilegeToken
outlook_office_path
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-02-11 17:19
Signatures
Purecrypter family
Analysis: behavioral1
Detonation Overview
Submitted
2023-02-11 17:19
Reported
2023-02-11 17:25
Platform
win7-20221111-en
Max time kernel
137s
Max time network
218s
Command Line
Signatures
PureCrypter
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe |
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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 952 wrote to memory of 556 | 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\WerFault.exe |
| PID 952 wrote to memory of 556 | 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\WerFault.exe |
| PID 952 wrote to memory of 556 | 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\WerFault.exe |
| PID 952 wrote to memory of 556 | 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\WerFault.exe |
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 952 -s 1728
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/952-54-0x0000000000EA0000-0x0000000000EAC000-memory.dmp
memory/952-55-0x0000000075D11000-0x0000000075D13000-memory.dmp
memory/556-56-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-02-11 17:19
Reported
2023-02-11 17:22
Platform
win10v2004-20220901-en
Max time kernel
143s
Max time network
155s
Command Line
Signatures
AgentTesla
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
| 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 |
| 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 |
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 4976 set thread context of 1856 | 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
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 | 13.107.43.12:443 | zerufq.ch.files.1drv.com | tcp |
| US | 52.182.141.63:443 | tcp | |
| US | 2.18.109.224:443 | tcp | |
| US | 8.8.8.8:53 | api.ipify.org | udp |
| US | 64.185.227.155:443 | api.ipify.org | tcp |
Files
memory/4976-132-0x0000000000D90000-0x0000000000D9C000-memory.dmp
memory/4976-133-0x0000000005C90000-0x0000000006234000-memory.dmp
memory/4976-134-0x0000000005610000-0x00000000056A2000-memory.dmp
memory/4976-135-0x0000000007450000-0x0000000007472000-memory.dmp
memory/3172-136-0x0000000000000000-mapping.dmp
memory/3172-137-0x00000000025D0000-0x0000000002606000-memory.dmp
memory/3172-138-0x0000000004E60000-0x0000000005488000-memory.dmp
memory/3172-140-0x0000000005570000-0x00000000055D6000-memory.dmp
memory/3172-139-0x0000000005490000-0x00000000054F6000-memory.dmp
memory/3172-141-0x0000000005BC0000-0x0000000005BDE000-memory.dmp
memory/3172-143-0x00000000060C0000-0x00000000060DA000-memory.dmp
memory/3172-142-0x00000000073F0000-0x0000000007A6A000-memory.dmp
memory/1856-144-0x0000000000000000-mapping.dmp
memory/1856-145-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1856-146-0x0000000006A40000-0x0000000006A4A000-memory.dmp
memory/1856-147-0x0000000006CC0000-0x0000000006D10000-memory.dmp
memory/1856-148-0x0000000006F20000-0x00000000070E2000-memory.dmp