Analysis
- max time kernel
103s - max time network
111s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/02/2021, 09:52
General
- Target SecuriteInfo.com.Trojan.DownloaderNET.117.13923.14318.exe
- Size 40KB
- Sample210209-98velmxlb6
- SHA256 e838818dca05da30d6307e7d6b0a724ff63c81bf7391e085d6ff60ff2320d03b
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
frostdell.uk
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Port
587
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Username
-
Password
7213575aceACE@#$
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Drops file in Drivers directory 1 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 NtSetInformationThreadHideFromDebugger 14 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- 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\SecuriteInfo.com.Trojan.DownloaderNET.117.13923.14318.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.117.13923.14318.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 12⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 13⤵
- Delays execution with timeout.exe
-
-
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.117.13923.14318.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.117.13923.14318.exe"2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 496 -s 18042⤵
- Program crash
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/496-12-0x0000000006B40000-0x0000000006B41000-memory.dmp
memory/496-3-0x0000000000C70000-0x0000000000C71000-memory.dmp
memory/496-5-0x0000000002F00000-0x0000000002F01000-memory.dmp
memory/496-6-0x0000000005D20000-0x0000000005D21000-memory.dmp
memory/496-7-0x0000000005F20000-0x0000000005F21000-memory.dmp
memory/496-8-0x0000000005CC0000-0x0000000005CC1000-memory.dmp
memory/496-9-0x0000000005FA0000-0x0000000005FE6000-memory.dmp
memory/496-2-0x0000000073360000-0x0000000073A4E000-memory.dmp
memory/1280-21-0x0000000004610000-0x0000000004611000-memory.dmp
memory/2020-15-0x0000000073360000-0x0000000073A4E000-memory.dmp
memory/2020-13-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2020-19-0x0000000005640000-0x0000000005641000-memory.dmp
memory/2020-22-0x00000000061E0000-0x00000000061E1000-memory.dmp
memory/2020-23-0x0000000006270000-0x0000000006271000-memory.dmp
memory/2020-24-0x0000000006670000-0x0000000006671000-memory.dmp
memory/2020-25-0x00000000059D0000-0x00000000059D1000-memory.dmp