General
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Target
DR1.exe
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Size
15KB
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Sample
210120-nck2yxrq8e
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MD5
67698483a208b58241acfcdbe9682f90
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SHA1
2358b113a5a47d70e78b939156f2cdf7049fc39b
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SHA256
8f8198fc76f32f907c255e1715f44deaabd4677f4cc708ecfd6afb1a50d9bcfc
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SHA512
726181cf74d4adc26888d5454e66e76ca8887de3956d5a509fd015ae49f83683ad452d4f7a474bcdf3929e5192eb1e87e32636c515755739aef7ad136001b2ce
Static task
static1
Behavioral task
behavioral1
Sample
DR1.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
DR1.exe
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
max.mccanna@metaltek.me - Password:
@Mexico1.,
Targets
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Target
DR1.exe
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Size
15KB
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MD5
67698483a208b58241acfcdbe9682f90
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SHA1
2358b113a5a47d70e78b939156f2cdf7049fc39b
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SHA256
8f8198fc76f32f907c255e1715f44deaabd4677f4cc708ecfd6afb1a50d9bcfc
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SHA512
726181cf74d4adc26888d5454e66e76ca8887de3956d5a509fd015ae49f83683ad452d4f7a474bcdf3929e5192eb1e87e32636c515755739aef7ad136001b2ce
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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