Analysis
- max time kernel
145s - max time network
114s - platform
windows10_x64 - resource
win10v20210408 - submitted
28/06/2021, 14:28
General
- Target yogMjGlZZ84pTpd.exe
- Size 906KB
- Sample210628-bc65jx236n
- SHA256 4e4c8a7b36db5f15e7f1f5676e9d5e2871d2101ca7e28349384a8cdb698a54ab
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.speedtranslogistics.com
-
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 3 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
-
C:\Users\Admin\AppData\Local\Temp\yogMjGlZZ84pTpd.exe"C:\Users\Admin\AppData\Local\Temp\yogMjGlZZ84pTpd.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\GSmObvhI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4612.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\yogMjGlZZ84pTpd.exe"C:\Users\Admin\AppData\Local\Temp\yogMjGlZZ84pTpd.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\yogMjGlZZ84pTpd.exe"C:\Users\Admin\AppData\Local\Temp\yogMjGlZZ84pTpd.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/816-135-0x0000000005FE0000-0x0000000005FE1000-memory.dmp
memory/816-134-0x0000000005740000-0x0000000005741000-memory.dmp
memory/816-133-0x00000000052F0000-0x00000000057EE000-memory.dmp
memory/816-127-0x0000000000400000-0x000000000043C000-memory.dmp
memory/912-119-0x0000000004C20000-0x000000000511E000-memory.dmp
memory/912-123-0x0000000006FB0000-0x000000000705B000-memory.dmp
memory/912-124-0x0000000008420000-0x000000000849F000-memory.dmp
memory/912-122-0x0000000009190000-0x000000000B18F000-memory.dmp
memory/912-121-0x0000000004E80000-0x0000000004E81000-memory.dmp
memory/912-120-0x0000000004C20000-0x0000000004C21000-memory.dmp
memory/912-114-0x0000000000280000-0x0000000000281000-memory.dmp
memory/912-118-0x0000000004CC0000-0x0000000004CC1000-memory.dmp
memory/912-117-0x0000000005120000-0x0000000005121000-memory.dmp
memory/912-116-0x0000000004B50000-0x0000000004B51000-memory.dmp