Analysis
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max time kernel
90s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 02:50
Static task
static1
Behavioral task
behavioral1
Sample
INV_02072020_882779-9887.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
INV_02072020_882779-9887.exe
Resource
win10v2004-20220414-en
General
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Target
INV_02072020_882779-9887.exe
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Size
422KB
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MD5
54b3e81b8eee7202839129963792ae3f
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SHA1
314b6a5ade1f37005dc47f1c1d64bd09ec1d3e65
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SHA256
b4662f32f5b44f4f907bd3abdef185780feade88234ca21aeaa5c82216f8c41b
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SHA512
641ca5233571bc91298c5def3999dc1aea1ff4c75ebb2bdb5f424d0f0726cb3e9c30dbfc24e26a95a23b9dcd3dfe47e12b071eefb6a0183875570e9b5578a7d0
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.knmbz.com - Port:
587 - Username:
[email protected] - Password:
kJubHQs8
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/3764-132-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
INV_02072020_882779-9887.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion INV_02072020_882779-9887.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion INV_02072020_882779-9887.exe -
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:
INV_02072020_882779-9887.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV_02072020_882779-9887.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV_02072020_882779-9887.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV_02072020_882779-9887.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
INV_02072020_882779-9887.exedescription ioc process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 INV_02072020_882779-9887.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum INV_02072020_882779-9887.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
INV_02072020_882779-9887.exedescription pid process target process PID 1340 set thread context of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
INV_02072020_882779-9887.exepid process 3764 INV_02072020_882779-9887.exe 3764 INV_02072020_882779-9887.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
INV_02072020_882779-9887.exedescription pid process Token: SeDebugPrivilege 3764 INV_02072020_882779-9887.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
INV_02072020_882779-9887.exedescription pid process target process PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe PID 1340 wrote to memory of 3764 1340 INV_02072020_882779-9887.exe INV_02072020_882779-9887.exe -
outlook_office_path 1 IoCs
Processes:
INV_02072020_882779-9887.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV_02072020_882779-9887.exe -
outlook_win_path 1 IoCs
Processes:
INV_02072020_882779-9887.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 INV_02072020_882779-9887.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INV_02072020_882779-9887.exe"C:\Users\Admin\AppData\Local\Temp\INV_02072020_882779-9887.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\INV_02072020_882779-9887.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\INV_02072020_882779-9887.exe.logFilesize
588B
MD549461f799113a05a28d6b992090c22ce
SHA14049a26ca32ff9ed84fd748b75b36b73e17510ce
SHA256efa0ab0bd196baf69522d0e11a8bb384a1f0e1806590db7b6ed34abcf6faf5c3
SHA512dffd0fc9f13c5821f9a55bbfb0e1cb980b29903228805fda0331de68ef1ecfa7e716ebcb50c1a2429e5373f6c9e31977472e04769adf9feac8c7fe10f1814bc5
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memory/1340-130-0x0000000074690000-0x0000000074C41000-memory.dmpFilesize
5.7MB
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memory/3764-131-0x0000000000000000-mapping.dmp
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memory/3764-132-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/3764-134-0x0000000074690000-0x0000000074C41000-memory.dmpFilesize
5.7MB