Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 02:47
General
- Target d7d85feb390da925a7f895859050d29e429c812f05f6b5d11546b0b372524fda.exe
- Size 766KB
- Sample240607-daa4csgd8w
- SHA256 d7d85feb390da925a7f895859050d29e429c812f05f6b5d11546b0b372524fda
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
Password: )NYyffR0
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
Password: )NYyffR0
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 1 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.
- Adds Run key to start application 2 TTPs 1 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
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d7d85feb390da925a7f895859050d29e429c812f05f6b5d11546b0b372524fda.exe"C:\Users\Admin\AppData\Local\Temp\d7d85feb390da925a7f895859050d29e429c812f05f6b5d11546b0b372524fda.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\d7d85feb390da925a7f895859050d29e429c812f05f6b5d11546b0b372524fda.exe"C:\Users\Admin\AppData\Local\Temp\d7d85feb390da925a7f895859050d29e429c812f05f6b5d11546b0b372524fda.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/212-8-0x00000000053F0000-0x0000000005400000-memory.dmp
memory/212-10-0x000000000A150000-0x000000000A1EC000-memory.dmp
memory/212-2-0x00000000055E0000-0x0000000005B84000-memory.dmp
memory/212-3-0x0000000004F50000-0x0000000004FE2000-memory.dmp
memory/212-5-0x0000000005010000-0x000000000501A000-memory.dmp
memory/212-4-0x0000000075120000-0x00000000758D0000-memory.dmp
memory/212-6-0x00000000053A0000-0x00000000053B6000-memory.dmp
memory/212-7-0x00000000053E0000-0x00000000053EE000-memory.dmp
memory/212-1-0x00000000004C0000-0x0000000000584000-memory.dmp
memory/212-0-0x000000007512E000-0x000000007512F000-memory.dmp
memory/212-9-0x00000000062C0000-0x0000000006344000-memory.dmp
memory/212-14-0x0000000075120000-0x00000000758D0000-memory.dmp
memory/2856-13-0x0000000075120000-0x00000000758D0000-memory.dmp
memory/2856-11-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2856-15-0x00000000056B0000-0x0000000005716000-memory.dmp
memory/2856-16-0x0000000075120000-0x00000000758D0000-memory.dmp
memory/2856-18-0x0000000006C00000-0x0000000006C50000-memory.dmp
memory/2856-19-0x0000000075120000-0x00000000758D0000-memory.dmp