Analysis
- max time kernel
124s - max time network
130s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
07/07/2023, 10:23
General
- Target d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0.exe
- Size 878KB
- Sample230707-mesnmsgc98
- SHA256 d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.methobsindia.com
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Port
587
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Username
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Password
F)HQ jCV0
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Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0.exe"C:\Users\Admin\AppData\Local\Temp\d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bwZAwWtJmh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCDF9.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0.exe"{path}"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
d4ea06a7ded54d4950abd0a2d04487648da3f3fb0df2c1561196b02fbe0936f0.exe.log
tmpCDF9.tmp
memory/3112-146-0x0000000000400000-0x0000000000430000-memory.dmp
memory/3112-153-0x00000000057C0000-0x00000000057D0000-memory.dmp
memory/3112-152-0x0000000007360000-0x0000000007522000-memory.dmp
memory/3112-151-0x0000000006FF0000-0x0000000007040000-memory.dmp
memory/3112-150-0x00000000057C0000-0x00000000057D0000-memory.dmp
memory/3112-149-0x0000000005660000-0x00000000056C6000-memory.dmp
memory/4472-139-0x0000000004DC0000-0x0000000004E5C000-memory.dmp
memory/4472-142-0x0000000004C80000-0x0000000004C90000-memory.dmp
memory/4472-141-0x0000000004CD0000-0x0000000004CDA000-memory.dmp
memory/4472-140-0x0000000004C80000-0x0000000004C90000-memory.dmp
memory/4472-136-0x0000000000230000-0x0000000000312000-memory.dmp
memory/4472-138-0x0000000004D20000-0x0000000004DB2000-memory.dmp
memory/4472-137-0x00000000052D0000-0x0000000005874000-memory.dmp