General
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Target
59e98c1c90bd556e3cbd8803ae5569cde5012719e2c789304a4be84ec45e3445
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Size
448KB
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Sample
220521-plefpsagam
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MD5
20bb603462ab8f3e7924064ecfa606d6
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SHA1
f02c9ec51dc99f071468cc494d5dfd84fecc3334
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SHA256
59e98c1c90bd556e3cbd8803ae5569cde5012719e2c789304a4be84ec45e3445
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SHA512
d1c718ef783c2e6a30c81dfb26f8927dd75ed4db6cdd5fbf06a8c978c0db0dc2cabf36738dbcdbd17b3a2e7a38e962ec6d4be7533315e78cb00ea4237b255071
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.karmachalets.co.in - Port:
587 - Username:
akshya@karmachalets.co.in - Password:
Akshya@123
Extracted
Protocol: smtp- Host:
mail.karmachalets.co.in - Port:
587 - Username:
akshya@karmachalets.co.in - Password:
Akshya@123
Targets
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Target
Arrival Notice_XSS26005202.exe
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Size
524KB
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MD5
7dfc949e90244c874d44feef2576414e
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SHA1
c128697a45d29c99cc39f6e1a9f38843bb04c068
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SHA256
005a34d7e5981b1be3d985197bb47ee2a68245775db4f25a7afb9f9f3748004d
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SHA512
d5b82c85f1ff4b35f99bce6b0feb1b1deaeaabdb7accf4678310c59e7c73aefd022a1b9b8f0d9065b6204902f9fc9f7ae57223e9a6ba6790deb5e4f57f725029
Score10/10-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
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AgentTesla Payload
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Looks for VirtualBox Guest Additions in registry
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ReZer0 packer
Detects ReZer0, a packer with multiple versions used in various campaigns.
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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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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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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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Accesses Microsoft Outlook profiles
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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 SetThreadContext
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