Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
03-06-2024 09:53
Static task
static1
Behavioral task
behavioral1
Sample
Requirement Specification.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Requirement Specification.exe
Resource
win10v2004-20240426-en
General
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Target
Requirement Specification.exe
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Size
3.4MB
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MD5
86b91372dc46212aa7f5310339a6f7f3
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SHA1
ddfd08661f0f3a515c3802cf3042b002d1748d53
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SHA256
564d2275edd8f622be6717d156c627a346f330549ca2f266985e49a4e5e17204
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SHA512
6f2dfbb44854f6021752691d3c4328cdd6b40695fc923b0c28f8432d8c9d4fa217e75dce067ed86a58f8d8e424593035fb3084bee5a1b6b29fa5b872e1211210
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SSDEEP
49152:h8yJAk206NICMq5pzKRgqVzKfxgF2/yjmQkk2:2Bsb/kk2
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
business29.web-hosting.com - Port:
587 - Username:
[email protected] - Password:
Mas_#()@?"obo""" - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Requirement Specification.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Requirement Specification = "C:\\Users\\Admin\\Requirement Specification.exe" Requirement Specification.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 5 api.ipify.org 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Requirement Specification.exedescription pid process target process PID 3028 set thread context of 2092 3028 Requirement Specification.exe regsvcs.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exeregsvcs.exepid process 1284 powershell.exe 2092 regsvcs.exe 2092 regsvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeregsvcs.exedescription pid process Token: SeDebugPrivilege 1284 powershell.exe Token: SeDebugPrivilege 2092 regsvcs.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
Requirement Specification.exedescription pid process target process PID 3028 wrote to memory of 1284 3028 Requirement Specification.exe powershell.exe PID 3028 wrote to memory of 1284 3028 Requirement Specification.exe powershell.exe PID 3028 wrote to memory of 1284 3028 Requirement Specification.exe powershell.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe PID 3028 wrote to memory of 2092 3028 Requirement Specification.exe regsvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Requirement Specification.exe"C:\Users\Admin\AppData\Local\Temp\Requirement Specification.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3028 -
C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath $env:UserProfile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1284 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2092