Analysis
- max time kernel
143s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
- submitted
20/03/2023, 18:29
General
- Target file.exe
- Size 309KB
- Sample230320-w4wk9seh33
- SHA256 be316d90b0e5c1f88f32fa6dc7cf5b2c760c8ea63e7ddec3e2303cccf8ae25f9
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
- 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\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\zjlxnt.exe"C:\Users\Admin\AppData\Local\Temp\zjlxnt.exe" C:\Users\Admin\AppData\Local\Temp\anaictjg.cte2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\zjlxnt.exe"C:\Users\Admin\AppData\Local\Temp\zjlxnt.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- 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
anaictjg.cte
pqknsgems.bq
zjlxnt.exe
zjlxnt.exe
zjlxnt.exe
memory/1580-148-0x0000000004B50000-0x0000000004B60000-memory.dmp
memory/1580-150-0x00000000049E0000-0x0000000004A46000-memory.dmp
memory/1580-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1580-146-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1580-147-0x0000000004B50000-0x0000000004B60000-memory.dmp
memory/1580-141-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1580-149-0x0000000004B60000-0x0000000005104000-memory.dmp
memory/1580-143-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1580-151-0x0000000004B50000-0x0000000004B60000-memory.dmp
memory/1580-152-0x0000000005880000-0x0000000005912000-memory.dmp
memory/1580-153-0x00000000059A0000-0x00000000059AA000-memory.dmp
memory/1580-154-0x0000000005A30000-0x0000000005A80000-memory.dmp
memory/1580-155-0x0000000005D00000-0x0000000005EC2000-memory.dmp
memory/1580-157-0x0000000004B50000-0x0000000004B60000-memory.dmp
memory/1580-158-0x0000000004B50000-0x0000000004B60000-memory.dmp
memory/1580-159-0x0000000004B50000-0x0000000004B60000-memory.dmp