Malware Analysis Report

2024-12-07 14:15

Sample ID 241115-cn8fcazrbj
Target b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809
SHA256 b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809
Tags
agenttesla collection credential_access discovery 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

b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809

Threat Level: Known bad

The file b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809 was found to be: Known bad.

Malicious Activity Summary

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Agenttesla family

AgentTesla

Unsecured Credentials: Credentials In Files

Reads user/profile data of local email clients

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Reads WinSCP keys stored on the system

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-15 02:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-15 02:14

Reported

2024-11-15 02:17

Platform

win7-20241010-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

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

Unsecured Credentials: Credentials In Files

credential_access stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2440 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe

"C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe"

C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe

"{path}"

Network

N/A

Files

memory/2440-0-0x0000000074BC1000-0x0000000074BC2000-memory.dmp

memory/2440-1-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2440-2-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2440-3-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2440-4-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2952-5-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-19-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-17-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-22-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2440-21-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2952-20-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2952-15-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2952-11-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-9-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-7-0x0000000000400000-0x000000000044C000-memory.dmp

memory/2952-23-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2952-24-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2952-25-0x0000000074BC0000-0x000000007516B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-15 02:14

Reported

2024-11-15 02:17

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

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

Unsecured Credentials: Credentials In Files

credential_access stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe
PID 2432 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe

"C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe"

C:\Users\Admin\AppData\Local\Temp\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe

"{path}"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 smtp.yandex.com udp
RU 77.88.21.158:587 smtp.yandex.com tcp
US 8.8.8.8:53 158.21.88.77.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/2432-0-0x0000000074962000-0x0000000074963000-memory.dmp

memory/2432-1-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/2432-2-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/2432-3-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/2432-4-0x0000000074962000-0x0000000074963000-memory.dmp

memory/2432-5-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-6-0x0000000000400000-0x000000000044C000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\b255b004c99d71df7ba70055a72da589e5b390a1878858d9b4c86d003eb19809.exe.log

MD5 7baa6583f69f63f7230df9bf98448356
SHA1 fe9eb85b57192362da704a3c130377fe83862320
SHA256 a632504621b4cac1d5ba5465c7ad9b30f3d036e9838682506782124a211bed4f
SHA512 0e72541791281c0fdac1f5fc6beea0b9eb8766b2a386aecb92cb8a44e5b59b7114c79194393ddeff957ffe86021a311caed7ce2731b863d97ad441870efbc051

memory/2432-10-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-9-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-11-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-12-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-13-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-14-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-15-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-16-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/1324-17-0x0000000074960000-0x0000000074F11000-memory.dmp