Malware Analysis Report

2024-10-23 21:59

Sample ID 240612-b4zygayamh
Target 8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe
SHA256 8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439
Tags
agenttesla keylogger spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439

Threat Level: Known bad

The file 8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.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 referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

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

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

Detect packed .NET executables. Mostly AgentTeslaV4.

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

Detects executables packed with or use KoiVM

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-12 01:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 01:42

Reported

2024-06-12 01:45

Platform

win7-20240419-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.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 2420 set thread context of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2220 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 2420 wrote to memory of 2108 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\system32\WerFault.exe
PID 2420 wrote to memory of 2108 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\system32\WerFault.exe
PID 2420 wrote to memory of 2108 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe

"C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe"

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2420 -s 672

Network

N/A

Files

memory/2420-0-0x000007FEF6183000-0x000007FEF6184000-memory.dmp

memory/2420-1-0x00000000001E0000-0x00000000001EE000-memory.dmp

memory/2420-2-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

memory/2420-3-0x000000001A5C0000-0x000000001A654000-memory.dmp

memory/2220-8-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-17-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-15-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-13-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2220-10-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-6-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-4-0x0000000000400000-0x0000000000440000-memory.dmp

memory/2220-18-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

memory/2220-19-0x0000000074D40000-0x000000007542E000-memory.dmp

memory/2420-20-0x000007FEF6183000-0x000007FEF6184000-memory.dmp

memory/2420-21-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

memory/2220-22-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

memory/2220-23-0x0000000074D40000-0x000000007542E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 01:42

Reported

2024-06-12 01:45

Platform

win10v2004-20240508-en

Max time kernel

143s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4612 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 4612 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 4612 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
PID 4612 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4612 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4612 wrote to memory of 1460 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 1308 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 3364 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 3364 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
PID 4612 wrote to memory of 3364 N/A C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe

"C:\Users\Admin\AppData\Local\Temp\8819d137ba69b96b3f3c28cca74603e86c4ecea2c821e5332452a51258176439.exe"

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

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

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

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

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

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

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

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

Network

Country Destination Domain Proto
US 52.111.229.43:443 tcp

Files

memory/4612-0-0x00007FFAE1083000-0x00007FFAE1085000-memory.dmp

memory/4612-1-0x00000129DC950000-0x00000129DC95E000-memory.dmp

memory/4612-2-0x00007FFAE1080000-0x00007FFAE1B41000-memory.dmp

memory/4612-3-0x00000129F8120000-0x00000129F81B4000-memory.dmp

memory/1308-4-0x0000000000400000-0x0000000000440000-memory.dmp

memory/1308-5-0x000000007481E000-0x000000007481F000-memory.dmp

memory/1308-6-0x0000000005CF0000-0x0000000006294000-memory.dmp

memory/1308-7-0x00000000057B0000-0x0000000005816000-memory.dmp

memory/1308-8-0x0000000074810000-0x0000000074FC0000-memory.dmp

memory/4612-9-0x00007FFAE1080000-0x00007FFAE1B41000-memory.dmp

memory/1308-10-0x0000000006650000-0x00000000066A0000-memory.dmp

memory/1308-11-0x0000000006740000-0x00000000067D2000-memory.dmp

memory/1308-12-0x00000000066D0000-0x00000000066DA000-memory.dmp

memory/1308-13-0x000000007481E000-0x000000007481F000-memory.dmp

memory/1308-14-0x0000000074810000-0x0000000074FC0000-memory.dmp