Analysis
- max time kernel
120s - max time network
123s - platform
windows7_x64 - resource
win7-20231215-en - resource tags
- submitted
12/02/2024, 12:02
General
- Target Ynstr.exe
- Size 718KB
- Sample240212-n7fefsed98
- SHA256 f2a3d321b3fbb2d3be23e5416a82b92d9aa73c3573ef0630d0570483ced8a731
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.emulines.biz
-
Port
587
-
Username
-
Password
7FZLGL7DTG0F
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect ZGRat V1 35 IoCs
- ZGRat
ZGRat is remote access trojan written in C#.
- 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 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
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Ynstr.exe"C:\Users\Admin\AppData\Local\Temp\Ynstr.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Ynstr.exeC:\Users\Admin\AppData\Local\Temp\Ynstr.exe2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Ynstr.exeC:\Users\Admin\AppData\Local\Temp\Ynstr.exe2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1992-0-0x0000000000DD0000-0x0000000000E8A000-memory.dmp
memory/1992-2-0x0000000074DE0000-0x00000000754CE000-memory.dmp
memory/1992-1-0x0000000004290000-0x0000000004348000-memory.dmp
memory/1992-3-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-4-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-6-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-8-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-10-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-12-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-16-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-14-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-18-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-22-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-20-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-24-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-26-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-28-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-34-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-32-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-30-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-36-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-38-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-40-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-42-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-44-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-46-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-48-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-50-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-52-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-54-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-56-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-58-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-60-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-62-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-66-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-64-0x0000000004290000-0x0000000004342000-memory.dmp
memory/1992-1117-0x0000000000380000-0x00000000003C0000-memory.dmp
memory/1992-1118-0x0000000000300000-0x0000000000301000-memory.dmp
memory/1992-1119-0x00000000005F0000-0x0000000000632000-memory.dmp
memory/1992-1120-0x00000000006C0000-0x000000000070C000-memory.dmp
memory/1992-1132-0x0000000074DE0000-0x00000000754CE000-memory.dmp
memory/2220-1134-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2220-1135-0x00000000746F0000-0x0000000074DDE000-memory.dmp
memory/2220-1136-0x0000000004300000-0x0000000004340000-memory.dmp
memory/2220-1138-0x00000000746F0000-0x0000000074DDE000-memory.dmp
memory/2220-1139-0x0000000004300000-0x0000000004340000-memory.dmp