Analysis
- max time kernel
144s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 01:22
General
- Target 26756d0ead80952a3869b7e7a08a35079527cf0b8486f042b31e51e9a1e9e40a.exe
- Size 558KB
- Sample240607-brjqqafb4s
- SHA256 26756d0ead80952a3869b7e7a08a35079527cf0b8486f042b31e51e9a1e9e40a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.cvzagro.com.tr
-
Port
587
-
Username
-
Password
CvZ@gRo6080
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 2 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 2 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 2 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 2 IoCs
- Loads dropped DLL 2 IoCs
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- 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.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Looks up external IP address via web service 1 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 2 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\26756d0ead80952a3869b7e7a08a35079527cf0b8486f042b31e51e9a1e9e40a.exe"C:\Users\Admin\AppData\Local\Temp\26756d0ead80952a3869b7e7a08a35079527cf0b8486f042b31e51e9a1e9e40a.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\26756d0ead80952a3869b7e7a08a35079527cf0b8486f042b31e51e9a1e9e40a.exe"C:\Users\Admin\AppData\Local\Temp\26756d0ead80952a3869b7e7a08a35079527cf0b8486f042b31e51e9a1e9e40a.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
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nss4E15.tmp
nsu5172.tmp
nsu5172.tmp
fortrings.ini
memory/2368-591-0x0000000039AF0000-0x0000000039B56000-memory.dmp
memory/2368-590-0x0000000039B80000-0x000000003A124000-memory.dmp
memory/2368-572-0x00000000771F8000-0x00000000771F9000-memory.dmp
memory/2368-573-0x0000000077215000-0x0000000077216000-memory.dmp
memory/2368-586-0x0000000000460000-0x00000000016B4000-memory.dmp
memory/2368-589-0x0000000000460000-0x00000000004A2000-memory.dmp
memory/2368-588-0x0000000073E7E000-0x0000000073E7F000-memory.dmp
memory/2368-599-0x0000000073E70000-0x0000000074620000-memory.dmp
memory/2368-598-0x0000000073E7E000-0x0000000073E7F000-memory.dmp
memory/2368-587-0x0000000077171000-0x0000000077291000-memory.dmp
memory/2368-592-0x0000000073E70000-0x0000000074620000-memory.dmp
memory/2368-593-0x000000003A790000-0x000000003A7E0000-memory.dmp
memory/2368-595-0x000000003A8B0000-0x000000003A8BA000-memory.dmp
memory/2368-594-0x000000003A7F0000-0x000000003A882000-memory.dmp
memory/2868-570-0x0000000077171000-0x0000000077291000-memory.dmp
memory/2868-571-0x0000000073DC5000-0x0000000073DC6000-memory.dmp