Malware Analysis Report

2024-11-30 21:50

Sample ID 230206-r2eshsed57
Target DOCUMENTS.exe
SHA256 e3fa6e232d27ca9d98148c4d388cc8736dfad4343b217e5e2f0144479a359a40
Tags
agenttesla purecrypter collection downloader keylogger loader persistence 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

e3fa6e232d27ca9d98148c4d388cc8736dfad4343b217e5e2f0144479a359a40

Threat Level: Known bad

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

Malicious Activity Summary

agenttesla purecrypter collection downloader keylogger loader persistence spyware stealer trojan

AgentTesla

Detect PureCrypter injector

PureCrypter

Reads user/profile data of local email clients

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Checks computer location settings

Accesses Microsoft Outlook profiles

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

outlook_win_path

outlook_office_path

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-02-06 14:41

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-06 14:41

Reported

2023-02-06 14:43

Platform

win7-20221111-en

Max time kernel

30s

Max time network

33s

Command Line

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

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Detect PureCrypter injector

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

PureCrypter

loader downloader purecrypter

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

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Clbmxcarzb = "\"C:\\Users\\Admin\\AppData\\Roaming\\Atmmx\\Clbmxcarzb.exe\"" C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1464 set thread context of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1464 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1464 wrote to memory of 836 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Processes

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

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

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

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

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

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

Network

N/A

Files

memory/1464-54-0x0000000000B60000-0x000000000104E000-memory.dmp

memory/1464-55-0x0000000006210000-0x000000000648A000-memory.dmp

memory/1120-56-0x0000000000000000-mapping.dmp

memory/1120-57-0x0000000076581000-0x0000000076583000-memory.dmp

memory/1120-58-0x000000006FE10000-0x00000000703BB000-memory.dmp

memory/1120-59-0x000000006FE10000-0x00000000703BB000-memory.dmp

memory/1120-60-0x000000006FE10000-0x00000000703BB000-memory.dmp

memory/1464-61-0x0000000004670000-0x00000000046C4000-memory.dmp

memory/836-62-0x0000000000400000-0x0000000000430000-memory.dmp

memory/836-63-0x0000000000400000-0x0000000000430000-memory.dmp

memory/836-65-0x0000000000400000-0x0000000000430000-memory.dmp

memory/836-66-0x0000000000400000-0x0000000000430000-memory.dmp

memory/836-67-0x0000000000400000-0x0000000000430000-memory.dmp

memory/836-68-0x000000000042A41E-mapping.dmp

memory/836-70-0x0000000000400000-0x0000000000430000-memory.dmp

memory/836-72-0x0000000000400000-0x0000000000430000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-06 14:41

Reported

2023-02-06 14:43

Platform

win10v2004-20221111-en

Max time kernel

91s

Max time network

115s

Command Line

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

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

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

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Clbmxcarzb = "\"C:\\Users\\Admin\\AppData\\Roaming\\Atmmx\\Clbmxcarzb.exe\"" C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1764 set thread context of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.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\DOCUMENTS.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1764 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1764 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1764 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
PID 1764 wrote to memory of 1844 N/A C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe N/A

Processes

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

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

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

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

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

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

Network

Country Destination Domain Proto
US 20.189.173.10:443 tcp

Files

memory/1764-132-0x0000000000960000-0x0000000000E4E000-memory.dmp

memory/1764-133-0x0000000006C50000-0x0000000006C72000-memory.dmp

memory/3516-134-0x0000000000000000-mapping.dmp

memory/3516-135-0x0000000003340000-0x0000000003376000-memory.dmp

memory/3516-136-0x0000000005C30000-0x0000000006258000-memory.dmp

memory/3516-137-0x0000000006260000-0x00000000062C6000-memory.dmp

memory/3516-138-0x00000000062D0000-0x0000000006336000-memory.dmp

memory/3516-139-0x0000000006900000-0x000000000691E000-memory.dmp

memory/3516-140-0x0000000007F60000-0x00000000085DA000-memory.dmp

memory/3516-141-0x0000000006DF0000-0x0000000006E0A000-memory.dmp

memory/1844-142-0x0000000000000000-mapping.dmp

memory/1844-143-0x0000000000400000-0x0000000000430000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DOCUMENTS.exe.log

MD5 a713c363be116d5ed1f971db6a657e4f
SHA1 90791863564c9ed38e7b4f047022dec4474060a1
SHA256 4b5c446ec8ed2a2696ba00a0890763d413006ce1ea1a7a32fda1655720aef46e
SHA512 5dc740414a6ec30908e924f3bdfae2f761a35a476ef2dda239b789575a0a3696169deb6dc84a14d5828eaa5644623f107b2c686bfa4f54a90f0688239b4b1739

memory/1844-145-0x0000000006070000-0x0000000006614000-memory.dmp

memory/1844-146-0x0000000006D40000-0x0000000006DD2000-memory.dmp

memory/1844-147-0x0000000006D10000-0x0000000006D1A000-memory.dmp

memory/1844-148-0x0000000006F20000-0x0000000006F70000-memory.dmp

memory/1844-149-0x0000000007140000-0x0000000007302000-memory.dmp