Analysis
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max time kernel
108s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 02:15
Static task
static1
Behavioral task
behavioral1
Sample
pass_code.pdf.zip.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
pass_code.pdf.zip.exe
Resource
win10v2004-20220414-en
General
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Target
pass_code.pdf.zip.exe
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Size
455KB
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MD5
ae8c7beac6e8f4415deb994407bd4ba2
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SHA1
2199e488cc6f4da87307fefc1f3b67ab489e1724
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SHA256
edd8ffd641e14804cf56763e7369936bd9aaf2a9248dd9aaa196f8f27b416dd6
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SHA512
6402bde5e1556667c4a84dbfca9ccf81c92995d23d49b067d85565fc6fdfd95beaad0d26349ca06c144622b68c3659b7c618cc21da8e66f7eab04e9c2e47f236
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.visgring.com - Port:
587 - Username:
[email protected] - Password:
Ttvq$TB1
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/5048-132-0x0000000000400000-0x000000000044C000-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:
pass_code.pdf.zip.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion pass_code.pdf.zip.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion pass_code.pdf.zip.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:
pass_code.pdf.zip.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 pass_code.pdf.zip.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 pass_code.pdf.zip.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 pass_code.pdf.zip.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
pass_code.pdf.zip.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum pass_code.pdf.zip.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 pass_code.pdf.zip.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
pass_code.pdf.zip.exedescription pid process target process PID 1180 set thread context of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
pass_code.pdf.zip.exepid process 5048 pass_code.pdf.zip.exe 5048 pass_code.pdf.zip.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
pass_code.pdf.zip.exedescription pid process Token: SeDebugPrivilege 5048 pass_code.pdf.zip.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
pass_code.pdf.zip.exedescription pid process target process PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe PID 1180 wrote to memory of 5048 1180 pass_code.pdf.zip.exe pass_code.pdf.zip.exe -
outlook_office_path 1 IoCs
Processes:
pass_code.pdf.zip.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 pass_code.pdf.zip.exe -
outlook_win_path 1 IoCs
Processes:
pass_code.pdf.zip.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 pass_code.pdf.zip.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\pass_code.pdf.zip.exe"C:\Users\Admin\AppData\Local\Temp\pass_code.pdf.zip.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\pass_code.pdf.zip.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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memory/1180-130-0x0000000074F30000-0x00000000754E1000-memory.dmpFilesize
5.7MB
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memory/5048-131-0x0000000000000000-mapping.dmp
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memory/5048-132-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/5048-133-0x0000000074F30000-0x00000000754E1000-memory.dmpFilesize
5.7MB