Analysis
- max time kernel
184s - max time network
189s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
30/11/2022, 15:53
General
- Target proforma invoice.exe
- Size 807KB
- Sample221130-tbnzlsgd21
- SHA256 bb43a5754a893cb89704ada5e6ab99172fcaba378a12b890b6baae58fd6d35ba
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.dmstech.in
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Port
587
-
Username
-
Password
0]6F9Az.pqfd
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe"C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe"1⤵
- Checks computer location settings
- 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\juUODRHAYAfEDE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6B6C.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmp6B6C.tmp
memory/876-132-0x0000000000A00000-0x0000000000AD0000-memory.dmp
memory/876-133-0x0000000005AE0000-0x0000000006084000-memory.dmp
memory/876-134-0x0000000005480000-0x0000000005512000-memory.dmp
memory/876-135-0x0000000005530000-0x00000000055CC000-memory.dmp
memory/876-136-0x0000000005460000-0x000000000546A000-memory.dmp
memory/1376-140-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1376-141-0x00000000063B0000-0x0000000006416000-memory.dmp
memory/1376-142-0x00000000066E0000-0x0000000006730000-memory.dmp