Analysis
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max time kernel
151s -
max time network
135s -
platform
windows10-2004_x64 -
resource
win10v2004-20220722-en -
resource tags
arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system -
submitted
01-08-2022 17:18
Static task
static1
Behavioral task
behavioral1
Sample
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe
Resource
win10v2004-20220722-en
General
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Target
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe
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Size
1.5MB
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MD5
a623c92ea533fdec00aa1f99c724fe0a
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SHA1
1c641a709f29a420a07dc6497e5660b040ab79a7
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SHA256
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967
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SHA512
e96e4d50db8d96454948f001473c2e9bfde265234e1591a6e874fba48b866aedda17ad481ae5c4e9edd3e5e6590f1dbf6a9a945e68fce4ef662c03e02b4e78da
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
aFsO$W)7
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2016-134-0x0000000000400000-0x000000000044C000-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:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegAsm.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox = "C:\\Users\\Admin\\AppData\\Roaming\\firefox\\firefox.exe" RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exedescription pid process target process PID 2312 set thread context of 2016 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 2016 RegAsm.exe 2016 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 2016 RegAsm.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exepid process 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe -
Suspicious use of SendNotifyMessage 4 IoCs
Processes:
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exepid process 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exedescription pid process target process PID 2312 wrote to memory of 2016 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe RegAsm.exe PID 2312 wrote to memory of 2016 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe RegAsm.exe PID 2312 wrote to memory of 2016 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe RegAsm.exe PID 2312 wrote to memory of 2016 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe RegAsm.exe PID 2312 wrote to memory of 2016 2312 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe"C:\Users\Admin\AppData\Local\Temp\5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/2016-133-0x0000000000000000-mapping.dmp
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memory/2016-134-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/2016-139-0x0000000074D30000-0x00000000752E1000-memory.dmpFilesize
5.7MB
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memory/2016-140-0x0000000074D30000-0x00000000752E1000-memory.dmpFilesize
5.7MB
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memory/2312-132-0x0000000003EC0000-0x0000000003F07000-memory.dmpFilesize
284KB