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Analysis
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max time kernel
77s -
max time network
77s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
25/04/2023, 15:49
Static task
static1
Behavioral task
behavioral1
Sample
bea4f13b68a1437b995cf2fcf05e68f0.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
bea4f13b68a1437b995cf2fcf05e68f0.exe
Resource
win10v2004-20230220-en
General
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Target
bea4f13b68a1437b995cf2fcf05e68f0.exe
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Size
677KB
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MD5
bea4f13b68a1437b995cf2fcf05e68f0
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SHA1
ca801f10bd5b786b60891a6e65994f82ffc32ec7
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SHA256
f2ea300dc80eddee0a6887ea6c61f7860bff20164ebe432ebb262b4d21a3265c
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SHA512
138ce2d56bd59e63c7a1b1102f2d9f45bcc28647e521afa317ea7f214675d3c5affe8a85b0ef9d1232f864ad31620def7f534e2533e87d780b1652c9ae92db96
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SSDEEP
12288:O3m+vY07/kbXc5ZsdcbjEJipYgxcbp80Ua7QvFH/igv+ZPUcRwL:4m0/kqJci/cbpB8lqgSUc6
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
server320.web-hosting.com - Port:
587 - Username:
[email protected] - Password:
m#+f(b5{XRR3 - 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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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 bea4f13b68a1437b995cf2fcf05e68f0.exe Key opened \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 bea4f13b68a1437b995cf2fcf05e68f0.exe Key opened \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 bea4f13b68a1437b995cf2fcf05e68f0.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\RMBJLaF = "C:\\Users\\Admin\\AppData\\Roaming\\RMBJLaF\\RMBJLaF.exe" bea4f13b68a1437b995cf2fcf05e68f0.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1764 set thread context of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1428 bea4f13b68a1437b995cf2fcf05e68f0.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 PID 1764 wrote to memory of 1428 1764 bea4f13b68a1437b995cf2fcf05e68f0.exe 26 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 bea4f13b68a1437b995cf2fcf05e68f0.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 bea4f13b68a1437b995cf2fcf05e68f0.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bea4f13b68a1437b995cf2fcf05e68f0.exe"C:\Users\Admin\AppData\Local\Temp\bea4f13b68a1437b995cf2fcf05e68f0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1764 -
C:\Users\Admin\AppData\Local\Temp\bea4f13b68a1437b995cf2fcf05e68f0.exe"C:\Users\Admin\AppData\Local\Temp\bea4f13b68a1437b995cf2fcf05e68f0.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1428
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