General
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Target
admin.exe
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Size
36KB
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Sample
210120-12w2kjgtc6
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MD5
d64ae064a4fc5d008723a2d092d232e5
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SHA1
de033ba17f3b675d6907e154a0444e73b572f7ef
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SHA256
6cec4d45ec32bf036c8b5a513e029a5012c799e16acef1481e41822ba20dce8a
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SHA512
040e80fea05c97c621330d4fc423a83452a57a4c28f862e529a8259e87d58c3c153971ef17565274f7ec1385e34ada443e6f7526244dafab59a209047c0e7ec1
Static task
static1
Behavioral task
behavioral1
Sample
admin.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
admin.exe
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
admin@adipico.com - Password:
HELPMELORD@2021
Targets
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Target
admin.exe
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Size
36KB
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MD5
d64ae064a4fc5d008723a2d092d232e5
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SHA1
de033ba17f3b675d6907e154a0444e73b572f7ef
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SHA256
6cec4d45ec32bf036c8b5a513e029a5012c799e16acef1481e41822ba20dce8a
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SHA512
040e80fea05c97c621330d4fc423a83452a57a4c28f862e529a8259e87d58c3c153971ef17565274f7ec1385e34ada443e6f7526244dafab59a209047c0e7ec1
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Modifies WinLogon for persistence
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Turns off Windows Defender SpyNet reporting
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AgentTesla Payload
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Looks for VirtualBox Guest Additions in registry
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Looks for VMWare Tools registry key
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Drops startup file
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Reads data files stored by FTP clients
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients
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
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v6
Persistence
Winlogon Helper DLL
1Modify Existing Service
1Registry Run Keys / Startup Folder
1Defense Evasion
Modify Registry
6Disabling Security Tools
4Virtualization/Sandbox Evasion
2