General
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Target
RFQ for the supply of materialsservices for P.O. No. - 4700001838.exe
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Size
2.2MB
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Sample
210125-nw26e54mvn
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MD5
5ff5bbb9fd1f1d3a586ad9bea10a9773
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SHA1
1426737ae0a2039a85e9683aad4e1fc6b2d5a27b
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SHA256
a12c65ad23f195521f525ed905373f22fe0853c1e1fcfb317056d81051e6e532
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SHA512
aa21b5424ff194d35552e25a64a96d29c50229bc2281964a62c82069f38e956592d4099e99e682c859d9ab36165c80bf63b26dac11e9c7d1ca1ec63c84a547fe
Static task
static1
Behavioral task
behavioral1
Sample
RFQ for the supply of materialsservices for P.O. No. - 4700001838.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
RFQ for the supply of materialsservices for P.O. No. - 4700001838.exe
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.newviking.com.my - Port:
587 - Username:
[email protected] - Password:
{&SgX:^(7m
Targets
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Target
RFQ for the supply of materialsservices for P.O. No. - 4700001838.exe
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Size
2.2MB
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MD5
5ff5bbb9fd1f1d3a586ad9bea10a9773
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SHA1
1426737ae0a2039a85e9683aad4e1fc6b2d5a27b
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SHA256
a12c65ad23f195521f525ed905373f22fe0853c1e1fcfb317056d81051e6e532
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SHA512
aa21b5424ff194d35552e25a64a96d29c50229bc2281964a62c82069f38e956592d4099e99e682c859d9ab36165c80bf63b26dac11e9c7d1ca1ec63c84a547fe
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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