Analysis
- max time kernel
146s - max time network
109s - platform
windows10_x64 - resource
win10v200722 - submitted
17/08/2020, 09:20
General
- Target COSU 6270575380 PCL2004868048.exe
- Size 606KB
- Sample200817-wcp6sp1fwe
- SHA256 b4b4e82b4584a55722d213ea607a3b1131caaa039589a27e12ba4feeeaee7fb5
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
smtp.yandex.com
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Port
587
-
Username
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Password
Everest10
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- 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.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"1⤵
- 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\UGVpSjQyl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8591.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"C:\Users\Admin\AppData\Local\Temp\COSU 6270575380 PCL2004868048.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/580-9-0x00000000008E0000-0x0000000000960000-memory.dmp
memory/580-10-0x0000000000D30000-0x0000000000D87000-memory.dmp
memory/580-5-0x0000000004E30000-0x0000000004E31000-memory.dmp
memory/580-6-0x0000000002660000-0x0000000002661000-memory.dmp
memory/580-7-0x0000000004F30000-0x0000000004F31000-memory.dmp
memory/580-8-0x00000000026B0000-0x00000000026B3000-memory.dmp
memory/580-0-0x0000000073120000-0x000000007380E000-memory.dmp
memory/580-4-0x0000000005330000-0x0000000005331000-memory.dmp
memory/580-1-0x00000000003B0000-0x00000000003B1000-memory.dmp
memory/580-3-0x0000000004D90000-0x0000000004D91000-memory.dmp
memory/2300-13-0x0000000000400000-0x000000000044C000-memory.dmp
memory/2300-16-0x0000000073120000-0x000000007380E000-memory.dmp
memory/2300-21-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
memory/2300-22-0x0000000005A70000-0x0000000005A71000-memory.dmp