General
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Target
SecuriteInfo.com.Variant.Bulz.233365.3916.19181
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Size
633KB
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Sample
201126-2d7wld1j2s
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MD5
47f90575c21bffd769880ab07803d12d
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SHA1
7711458983aef786e8807f8252b78b49fae27032
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SHA256
ec6609022ecc725ca1b77d8e968d79cda6beedc90c3480c7fc0ca8682a40269c
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SHA512
95c70e7bf7718d1fea37776c4281118b639e512a0255779a734c953f67f7ae32e1b3925d85d628b92c839781010ef89bf243575d9d4ef6892cbb85627eb516b6
Static task
static1
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Variant.Bulz.233365.3916.19181.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
SecuriteInfo.com.Variant.Bulz.233365.3916.19181.exe
Resource
win10v20201028
Malware Config
Extracted
agenttesla
http://baharanvilla.ir/wp-includes/z/inc/d51b6e0eedd7ee.php
Targets
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Target
SecuriteInfo.com.Variant.Bulz.233365.3916.19181
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Size
633KB
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MD5
47f90575c21bffd769880ab07803d12d
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SHA1
7711458983aef786e8807f8252b78b49fae27032
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SHA256
ec6609022ecc725ca1b77d8e968d79cda6beedc90c3480c7fc0ca8682a40269c
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SHA512
95c70e7bf7718d1fea37776c4281118b639e512a0255779a734c953f67f7ae32e1b3925d85d628b92c839781010ef89bf243575d9d4ef6892cbb85627eb516b6
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload
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Drops file in Drivers directory
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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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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext
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