Analysis
- max time kernel
293s - max time network
204s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
28/06/2024, 13:06
General
- Target MT103-0011.06272024.exe
- Size 870KB
- Sample240628-qce7ba1clf
- SHA256 a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.epressong.com
-
Port
587
-
Username
-
Password
nFMLKCvO3
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- 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.
- 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 NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe"C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe"C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1840-24-0x00000000048F0000-0x0000000007297000-memory.dmp
memory/1840-25-0x0000000077941000-0x0000000077A61000-memory.dmp
memory/1840-26-0x0000000010004000-0x0000000010005000-memory.dmp
memory/1840-31-0x00000000048F0000-0x0000000007297000-memory.dmp
memory/4408-29-0x00000000004A0000-0x00000000004E0000-memory.dmp
memory/4408-28-0x00000000004A0000-0x00000000016F4000-memory.dmp
memory/4408-30-0x0000000036BE0000-0x0000000037184000-memory.dmp
memory/4408-27-0x0000000001700000-0x00000000040A7000-memory.dmp
memory/4408-32-0x0000000036B00000-0x0000000036B66000-memory.dmp
memory/4408-34-0x00000000379B0000-0x0000000037A00000-memory.dmp
memory/4408-35-0x0000000037A10000-0x0000000037AA2000-memory.dmp
memory/4408-36-0x0000000037B00000-0x0000000037B0A000-memory.dmp
memory/4408-38-0x0000000001700000-0x00000000040A7000-memory.dmp