Analysis
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max time kernel
90s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 11:01
Static task
static1
Behavioral task
behavioral1
Sample
osasuna.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
osasuna.exe
Resource
win10v2004-20220414-en
General
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Target
osasuna.exe
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Size
1.0MB
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MD5
b6df5864fc6fa87ba731b8986ae5a352
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SHA1
ba0315e91c131f87c832f2210239a19e802f32b9
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SHA256
757f7141daf24169ff3694cdf0247b7ce0b71c66a970837a71149a69b5b6d371
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SHA512
341f893f68cae0254576194cbc923b09d583b304f5c9132877c489e97fffd752eb3e2436ffe33ebf96a8ea979ddd4fbc27660201c6f49ff9341e74a30ce06e5a
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
104osayandex
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
104osayandex
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4136-134-0x0000000000A20000-0x0000000000A72000-memory.dmp family_agenttesla behavioral2/memory/4136-133-0x0000000000A20000-0x0000000000A72000-memory.dmp family_agenttesla -
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
Processes:
osasuna.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 osasuna.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 osasuna.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 osasuna.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
osasuna.exedescription pid process target process PID 4900 set thread context of 4136 4900 osasuna.exe osasuna.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
osasuna.exeosasuna.exepid process 4900 osasuna.exe 4900 osasuna.exe 4136 osasuna.exe 4136 osasuna.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
osasuna.exepid process 4900 osasuna.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
osasuna.exedescription pid process Token: SeDebugPrivilege 4136 osasuna.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
osasuna.exeosasuna.exedescription pid process target process PID 4900 wrote to memory of 4136 4900 osasuna.exe osasuna.exe PID 4900 wrote to memory of 4136 4900 osasuna.exe osasuna.exe PID 4900 wrote to memory of 4136 4900 osasuna.exe osasuna.exe PID 4136 wrote to memory of 3344 4136 osasuna.exe netsh.exe PID 4136 wrote to memory of 3344 4136 osasuna.exe netsh.exe PID 4136 wrote to memory of 3344 4136 osasuna.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
osasuna.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 osasuna.exe -
outlook_win_path 1 IoCs
Processes:
osasuna.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 osasuna.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\osasuna.exe"C:\Users\Admin\AppData\Local\Temp\osasuna.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\osasuna.exe"C:\Users\Admin\AppData\Local\Temp\osasuna.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/3344-136-0x0000000000000000-mapping.dmp
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memory/4136-132-0x0000000000000000-mapping.dmp
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memory/4136-134-0x0000000000A20000-0x0000000000A72000-memory.dmpFilesize
328KB
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memory/4136-133-0x0000000000A20000-0x0000000000A72000-memory.dmpFilesize
328KB
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memory/4136-135-0x00000000741D0000-0x0000000074781000-memory.dmpFilesize
5.7MB
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memory/4900-131-0x0000000002570000-0x0000000002582000-memory.dmpFilesize
72KB