General
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Target
KOSTAL.exe
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Size
624KB
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Sample
210128-dye7dcwa4j
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MD5
18e749290158ac34ad6ec1edcbf8ef01
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SHA1
5826bddad06961fc3ea9e4c02069ea486cd7a499
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SHA256
e0ec5ab404593520f98d17976acc233909af7784ea750cd2115d71eccb0b9ace
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SHA512
18852268da231e15d1a00e07b4ca3abf262ba584986193b47390c0df95161193a806438cf794090d854520c9ecd480b23a9e3e2d77e4fc1d5d8f9741f577c06a
Static task
static1
Behavioral task
behavioral1
Sample
KOSTAL.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
KOSTAL.exe
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.psbusinesparks.com - Port:
587 - Username:
[email protected] - Password:
Alterative432
Targets
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Target
KOSTAL.exe
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Size
624KB
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MD5
18e749290158ac34ad6ec1edcbf8ef01
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SHA1
5826bddad06961fc3ea9e4c02069ea486cd7a499
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SHA256
e0ec5ab404593520f98d17976acc233909af7784ea750cd2115d71eccb0b9ace
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SHA512
18852268da231e15d1a00e07b4ca3abf262ba584986193b47390c0df95161193a806438cf794090d854520c9ecd480b23a9e3e2d77e4fc1d5d8f9741f577c06a
Score10/10-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload
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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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Suspicious use of SetThreadContext
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