Malware Analysis Report

2024-10-23 21:59

Sample ID 240612-b3al7axhqr
Target 7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe
SHA256 7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b
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

7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b

Threat Level: Known bad

The file 7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe was found to be: Known bad.

Malicious Activity Summary

agenttesla keylogger spyware stealer trojan

AgentTesla

Detects executables referencing Windows vault credential objects. Observed in infostealers

Detects executables packed with or use KoiVM

Detects executables referencing many email and collaboration clients. Observed in information stealers

Detect packed .NET executables. Mostly AgentTeslaV4.

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Detects executables referencing many file transfer clients. Observed in information stealers

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Reads WinSCP keys stored on the system

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-12 01:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 01:39

Reported

2024-06-12 01:42

Platform

win7-20240215-en

Max time kernel

119s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Detect packed .NET executables. Mostly AgentTeslaV4.

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

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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

Detects executables packed with or use KoiVM

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

Detects executables referencing Windows vault credential objects. Observed in infostealers

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

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

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

Detects executables referencing many email and collaboration clients. Observed in information stealers

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

Detects executables referencing many file transfer clients. Observed in information stealers

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1664 set thread context of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 1664 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\system32\WerFault.exe
PID 1664 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\system32\WerFault.exe
PID 1664 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe

"C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe"

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 1664 -s 668

Network

N/A

Files

memory/1664-0-0x000007FEF5A43000-0x000007FEF5A44000-memory.dmp

memory/1664-1-0x0000000000CC0000-0x0000000000CE4000-memory.dmp

memory/1664-2-0x000007FEF5A40000-0x000007FEF642C000-memory.dmp

memory/1664-3-0x0000000000C00000-0x0000000000C94000-memory.dmp

memory/2496-4-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2496-15-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-13-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-10-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-8-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-17-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-6-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2496-18-0x00000000746DE000-0x00000000746DF000-memory.dmp

memory/2496-19-0x00000000746D0000-0x0000000074DBE000-memory.dmp

memory/1664-20-0x000007FEF5A43000-0x000007FEF5A44000-memory.dmp

memory/1664-21-0x000007FEF5A40000-0x000007FEF642C000-memory.dmp

memory/2496-22-0x00000000746DE000-0x00000000746DF000-memory.dmp

memory/2496-23-0x00000000746D0000-0x0000000074DBE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 01:39

Reported

2024-06-12 01:42

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Detect packed .NET executables. Mostly AgentTeslaV4.

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

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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

Detects executables packed with or use KoiVM

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

Detects executables referencing Windows vault credential objects. Observed in infostealers

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

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

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

Detects executables referencing many email and collaboration clients. Observed in information stealers

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

Detects executables referencing many file transfer clients. Observed in information stealers

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

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 2956 set thread context of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.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\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2956 wrote to memory of 4956 N/A C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.exe

"C:\Users\Admin\AppData\Local\Temp\7b3b27a5939919582d1c712df7e9a1792c22bebabb3f393d6681b0712e226a6b.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 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp

Files

memory/2956-1-0x0000014C887B0000-0x0000014C887D4000-memory.dmp

memory/2956-0-0x00007FFD8DD63000-0x00007FFD8DD65000-memory.dmp

memory/2956-2-0x00007FFD8DD60000-0x00007FFD8E821000-memory.dmp

memory/2956-3-0x0000014CA41A0000-0x0000014CA4234000-memory.dmp

memory/4956-4-0x0000000000400000-0x0000000000442000-memory.dmp

memory/4956-5-0x000000007469E000-0x000000007469F000-memory.dmp

memory/4956-6-0x0000000005660000-0x0000000005C04000-memory.dmp

memory/4956-7-0x0000000004ED0000-0x0000000004F36000-memory.dmp

memory/4956-8-0x0000000074690000-0x0000000074E40000-memory.dmp

memory/2956-9-0x00007FFD8DD60000-0x00007FFD8E821000-memory.dmp

memory/4956-10-0x0000000005600000-0x0000000005650000-memory.dmp

memory/4956-11-0x0000000005EB0000-0x0000000005F42000-memory.dmp

memory/4956-12-0x0000000005E40000-0x0000000005E4A000-memory.dmp

memory/4956-13-0x000000007469E000-0x000000007469F000-memory.dmp

memory/4956-14-0x0000000074690000-0x0000000074E40000-memory.dmp