Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
10/05/2024, 08:51
General
- Target 5356f077803597f9ee8bb115fa7a7655.exe
- Size 664KB
- Sample240510-kr54dsde8s
- SHA256 3bf903010f735c2a4811f17b6b02e5e5040987a431640d80dcdbeea98dd87598
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
qwbf ljzv fdna xpfx
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
qwbf ljzv fdna xpfx
-
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 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.
- 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 Program Files 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5356f077803597f9ee8bb115fa7a7655.exe"C:\Users\Admin\AppData\Local\Temp\5356f077803597f9ee8bb115fa7a7655.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\5356f077803597f9ee8bb115fa7a7655.exe"C:\Users\Admin\AppData\Local\Temp\5356f077803597f9ee8bb115fa7a7655.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
nsrA5F.tmp
System.dll
memory/944-574-0x0000000005570000-0x0000000006E47000-memory.dmp
memory/944-579-0x0000000005570000-0x0000000006E47000-memory.dmp
memory/944-573-0x0000000074595000-0x0000000074596000-memory.dmp
memory/944-571-0x0000000005570000-0x0000000006E47000-memory.dmp
memory/944-572-0x00000000778B1000-0x00000000779D1000-memory.dmp
memory/1992-580-0x00000000004A0000-0x00000000004E4000-memory.dmp
memory/1992-577-0x0000000077955000-0x0000000077956000-memory.dmp
memory/1992-578-0x00000000004A0000-0x00000000016F4000-memory.dmp
memory/1992-576-0x0000000077938000-0x0000000077939000-memory.dmp
memory/1992-575-0x0000000001700000-0x0000000002FD7000-memory.dmp
memory/1992-581-0x0000000035870000-0x0000000035E14000-memory.dmp
memory/1992-582-0x0000000035F30000-0x0000000035F96000-memory.dmp
memory/1992-583-0x0000000036810000-0x0000000036860000-memory.dmp
memory/1992-584-0x0000000036870000-0x000000003690C000-memory.dmp
memory/1992-586-0x0000000036AD0000-0x0000000036B62000-memory.dmp
memory/1992-587-0x0000000036CD0000-0x0000000036CDA000-memory.dmp
memory/1992-588-0x0000000001700000-0x0000000002FD7000-memory.dmp
memory/1992-590-0x00000000778B1000-0x00000000779D1000-memory.dmp