Analysis
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max time kernel
152s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 02:55
Static task
static1
Behavioral task
behavioral1
Sample
revised PI.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
revised PI.exe
Resource
win10v2004-20220414-en
General
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Target
revised PI.exe
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Size
390KB
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MD5
3194620f4034331c79d5d0dfc6023776
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SHA1
6f8d397158da9347587bccfb356af3def94ef892
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SHA256
eafe80f90a3a9a02cea6165309b01aab3ab9b7eab9401342b665e8fdefc65869
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SHA512
3c88c05602d5c82a37c1447db0fe9e08719e399fc2a9d1f29e3838114f4a35824b30c7467ff54144d7a19b7c69d56f2140a67a373594698b86a73317733ecab5
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
1xH}wgu7}f%E
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/4608-132-0x0000000000400000-0x0000000000450000-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:
revised PI.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion revised PI.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion revised PI.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:
revised PI.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 revised PI.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 revised PI.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 revised PI.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
revised PI.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum revised PI.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 revised PI.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
revised PI.exedescription pid process target process PID 3976 set thread context of 4608 3976 revised PI.exe revised PI.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
revised PI.exepid process 4608 revised PI.exe 4608 revised PI.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
revised PI.exepid process 4608 revised PI.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
revised PI.exedescription pid process Token: SeDebugPrivilege 4608 revised PI.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
revised PI.exerevised PI.exedescription pid process target process PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 3976 wrote to memory of 4608 3976 revised PI.exe revised PI.exe PID 4608 wrote to memory of 3080 4608 revised PI.exe netsh.exe PID 4608 wrote to memory of 3080 4608 revised PI.exe netsh.exe PID 4608 wrote to memory of 3080 4608 revised PI.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
revised PI.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 revised PI.exe -
outlook_win_path 1 IoCs
Processes:
revised PI.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 revised PI.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\revised PI.exe"C:\Users\Admin\AppData\Local\Temp\revised PI.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\revised PI.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- 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
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Downloads
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memory/3080-134-0x0000000000000000-mapping.dmp
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memory/3976-130-0x00000000747F0000-0x0000000074DA1000-memory.dmpFilesize
5.7MB
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memory/4608-131-0x0000000000000000-mapping.dmp
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memory/4608-132-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/4608-133-0x00000000747F0000-0x0000000074DA1000-memory.dmpFilesize
5.7MB