Analysis
- max time kernel
143s - max time network
111s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
18/04/2023, 09:38
General
- Target Order PO230325174.exe
- Size 304KB
- Sample230418-ll2pfscd7x
- SHA256 44b75803f16adb7768ad6ce2fcb8f56422a665085ac5aaebbce5fc8639bd352c
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Order PO230325174.exe"C:\Users\Admin\AppData\Local\Temp\Order PO230325174.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\grosyjxewh.exe"C:\Users\Admin\AppData\Local\Temp\grosyjxewh.exe" C:\Users\Admin\AppData\Local\Temp\hgkyvhibbv.fjj2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\grosyjxewh.exe"C:\Users\Admin\AppData\Local\Temp\grosyjxewh.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
grosyjxewh.exe
grosyjxewh.exe
grosyjxewh.exe
hgkyvhibbv.fjj
nmwyjmcbu.m
memory/1080-140-0x0000000000A30000-0x0000000000A32000-memory.dmp
memory/2232-151-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-154-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-146-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2232-148-0x00000000049A0000-0x0000000004F44000-memory.dmp
memory/2232-149-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2232-150-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-143-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2232-152-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-153-0x0000000004FB0000-0x0000000005016000-memory.dmp
memory/2232-145-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2232-155-0x0000000006190000-0x0000000006222000-memory.dmp
memory/2232-156-0x0000000006260000-0x000000000626A000-memory.dmp
memory/2232-157-0x00000000063D0000-0x0000000006420000-memory.dmp
memory/2232-158-0x0000000006510000-0x00000000066D2000-memory.dmp
memory/2232-160-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-161-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-162-0x0000000004990000-0x00000000049A0000-memory.dmp
memory/2232-163-0x0000000004990000-0x00000000049A0000-memory.dmp