Analysis
- max time kernel
128s - max time network
94s - platform
windows10_x64 - resource
win10v20210408 - submitted
06/10/2021, 12:44
General
- Target draft transport documents for trucks collection date approved 013102021.exe
- Size 1.2MB
- Sample211006-pyg3csbdcj
- SHA256 7cbf232730bcc3bb4b28f41ef0922d188c9be5f1a63691c0b09ba3e23ef20582
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.atlasmat.com
-
Port
587
-
Username
-
Password
9gf04d0p5KWw
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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.exe"C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.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\SndKHyaSV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp48A.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.exe"{path}"2⤵
- 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/500-138-0x0000000002CE1000-0x0000000002CE2000-memory.dmp
memory/500-135-0x0000000005FD0000-0x0000000005FD1000-memory.dmp
memory/500-134-0x0000000005460000-0x0000000005461000-memory.dmp
memory/500-133-0x0000000002CE0000-0x0000000002CE1000-memory.dmp
memory/500-127-0x0000000000400000-0x000000000043C000-memory.dmp
memory/900-119-0x0000000005AD0000-0x0000000005FCE000-memory.dmp
memory/900-123-0x0000000008610000-0x0000000008690000-memory.dmp
memory/900-124-0x000000000B690000-0x000000000B6C9000-memory.dmp
memory/900-122-0x0000000001810000-0x000000000181E000-memory.dmp
memory/900-121-0x0000000005CD0000-0x0000000005CD1000-memory.dmp
memory/900-120-0x0000000005AA0000-0x0000000005AA1000-memory.dmp
memory/900-114-0x0000000000F90000-0x0000000000F91000-memory.dmp
memory/900-118-0x0000000005B70000-0x0000000005B71000-memory.dmp
memory/900-117-0x0000000005FD0000-0x0000000005FD1000-memory.dmp
memory/900-116-0x00000000059C0000-0x00000000059C1000-memory.dmp