Analysis
- max time kernel
147s - max time network
112s - platform
windows10_x64 - resource
win10v20210410 - submitted
05/07/2021, 05:22
General
- Target vGXbKUQZZpb0fE8.exe
- Size 1.0MB
- Sample210705-g8dz57e76x
- SHA256 b35c290250aa6e9744731e6d6cd3a744561c0cd0d19cf4641ec90d5113236b32
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.speedtranslogistics.com
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Port
587
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Username
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Password
&q*L9+U[o}&o
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.
- Adds Run key to start application 2 TTPs 1 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.
- 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
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C:\Users\Admin\AppData\Local\Temp\vGXbKUQZZpb0fE8.exe"C:\Users\Admin\AppData\Local\Temp\vGXbKUQZZpb0fE8.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\pmRUCqlCkBji" /XML "C:\Users\Admin\AppData\Local\Temp\tmp89C.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\vGXbKUQZZpb0fE8.exe"C:\Users\Admin\AppData\Local\Temp\vGXbKUQZZpb0fE8.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\vGXbKUQZZpb0fE8.exe"C:\Users\Admin\AppData\Local\Temp\vGXbKUQZZpb0fE8.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- 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/2896-123-0x000000000DAD0000-0x000000000DB46000-memory.dmp
memory/2896-118-0x00000000055E0000-0x00000000055E1000-memory.dmp
memory/2896-120-0x0000000005740000-0x0000000005741000-memory.dmp
memory/2896-121-0x0000000005540000-0x0000000005A3E000-memory.dmp
memory/2896-122-0x000000000B850000-0x000000000D84F000-memory.dmp
memory/2896-114-0x0000000000B50000-0x0000000000B51000-memory.dmp
memory/2896-124-0x000000000DB50000-0x000000000DB96000-memory.dmp
memory/2896-119-0x0000000005460000-0x0000000005461000-memory.dmp
memory/2896-117-0x0000000005A40000-0x0000000005A41000-memory.dmp
memory/2896-116-0x00000000054A0000-0x00000000054A1000-memory.dmp
memory/3764-127-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3764-134-0x0000000002F60000-0x0000000002F61000-memory.dmp
memory/3764-135-0x0000000005630000-0x0000000005631000-memory.dmp
memory/3764-136-0x00000000061E0000-0x00000000061E1000-memory.dmp