Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
03/06/2024, 12:44
General
- Target 91d45333957d0f366bab593a9dda5e84_JaffaCakes118.exe
- Size 1.6MB
- Sample240603-py1jpseh3v
- SHA256 737ea6edfdc8fa560104c62e87efa44f0ec600dfda82f0ac09aa2d9f6fc522fa
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.anartem.pt
-
Port
587
-
Username
-
Password
oo=GI1st9,Nq
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.anartem.pt
-
Port
587
-
Username
-
Password
oo=GI1st9,Nq
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla payload 1 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\91d45333957d0f366bab593a9dda5e84_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\91d45333957d0f366bab593a9dda5e84_JaffaCakes118.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DNAgmHWRrEqh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp22EF.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\91d45333957d0f366bab593a9dda5e84_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\91d45333957d0f366bab593a9dda5e84_JaffaCakes118.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Credential Access
Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
tmp22EF.tmp
memory/2480-15-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/2480-12-0x0000000000400000-0x0000000000466000-memory.dmp
memory/2480-21-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/2480-20-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/2480-18-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/2480-13-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/2480-17-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-2-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-1-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-16-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-6-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-0-0x0000000074612000-0x0000000074613000-memory.dmp
memory/4580-5-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-4-0x0000000074610000-0x0000000074BC1000-memory.dmp
memory/4580-3-0x0000000074612000-0x0000000074613000-memory.dmp