General
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Target
Design Specification_A2000006.doc
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Size
282KB
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Sample
210120-cm8bgprxjn
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MD5
61d2d431528ad374f6d2e1137c76a612
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SHA1
3b5c01feeef4f2c4a2ae71d8ee1f7c89206cdf05
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SHA256
4419795a5f82eed2f276af791057a97b5b30d44912f98b4557c9cb7d159f1775
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SHA512
f20a96774bbe1f0e3977c922d8358a08bb211ff663fb7033bfbfbc93000ff3e5cea839218563545e5495e5bc1785d17c4333a1156f4d860eddb33d865fe88015
Static task
static1
Behavioral task
behavioral1
Sample
Design Specification_A2000006.doc
Resource
win7v20201028
Behavioral task
behavioral2
Sample
Design Specification_A2000006.doc
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
ashfaq.ali@nationalfuels.pw - Password:
@Mexico1.,
Targets
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Target
Design Specification_A2000006.doc
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Size
282KB
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MD5
61d2d431528ad374f6d2e1137c76a612
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SHA1
3b5c01feeef4f2c4a2ae71d8ee1f7c89206cdf05
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SHA256
4419795a5f82eed2f276af791057a97b5b30d44912f98b4557c9cb7d159f1775
-
SHA512
f20a96774bbe1f0e3977c922d8358a08bb211ff663fb7033bfbfbc93000ff3e5cea839218563545e5495e5bc1785d17c4333a1156f4d860eddb33d865fe88015
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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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AgentTesla Payload
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Looks for VirtualBox Guest Additions in registry
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Blocklisted process makes network request
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Executes dropped EXE
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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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Loads dropped DLL
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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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Drops file in System32 directory
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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
3Virtualization/Sandbox Evasion
2