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Analysis
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max time kernel
31s -
max time network
135s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
19/05/2023, 12:40
Static task
static1
Behavioral task
behavioral1
Sample
AWB-18052023.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
AWB-18052023.exe
Resource
win10v2004-20230220-en
General
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Target
AWB-18052023.exe
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Size
298KB
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MD5
b8b4d97f8f291a30d44ba156a4d4cbd1
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SHA1
2f545aad0c50c37754d9716bee7b9a37d5289910
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SHA256
2e5e690fe5a9607c51574cd1e8444591a9dd524fafc78911ff9f09ee5242bff1
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SHA512
7a8f9a452824555833158769c6a5247ca174679bdc8a527d3535b3fdd0fc05d1ead8097cb006c6a25dfce6493950798624ec81893122687ac5c1c9ea70fa387a
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SSDEEP
6144:6UFxbIBMP6HyvbefvpM9mkT7XmHlPF/6IC17Cjj1VA:VbgIuO9mQmHZFSRC
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.cynthiacostamilan.com.br - Port:
587 - Username:
[email protected] - Password:
Qwertyuiop123!@# - 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-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.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.
flow ioc 3 api.ipify.org 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2028 set thread context of 1920 2028 AWB-18052023.exe 29 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1920 RegAsm.exe 1920 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1920 RegAsm.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1976 2028 AWB-18052023.exe 28 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 PID 2028 wrote to memory of 1920 2028 AWB-18052023.exe 29 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\AWB-18052023.exe"C:\Users\Admin\AppData\Local\Temp\AWB-18052023.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2028 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵PID:1976
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1920
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