Analysis
- max time kernel
136s - max time network
119s - platform
windows7_x64 - resource
win7-en-20211208 - submitted
21/01/2022, 09:07
General
- Target OFERTA1 ENERO.exe
- Size 704KB
- Sample220121-k3bc6aegh4
- SHA256 b575c6747299894b60f1546924d45e720a1e0761b7dbe4498e5758ebcb786a73
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.tecnicasautocontrol.com
-
Port
587
-
Username
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Password
Tec399841
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 5 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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
- 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). Likely ransomware behaviour.
- 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 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\OFERTA1 ENERO.exe"C:\Users\Admin\AppData\Local\Temp\OFERTA1 ENERO.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZWwVQt.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZWwVQt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp89C9.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\OFERTA1 ENERO.exe"C:\Users\Admin\AppData\Local\Temp\OFERTA1 ENERO.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\OFERTA1 ENERO.exe"C:\Users\Admin\AppData\Local\Temp\OFERTA1 ENERO.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1004-70-0x00000000023A0000-0x0000000002FEA000-memory.dmp
memory/1004-69-0x00000000023A0000-0x0000000002FEA000-memory.dmp
memory/1004-67-0x00000000023A0000-0x0000000002FEA000-memory.dmp
memory/1688-58-0x00000000052E0000-0x0000000005350000-memory.dmp
memory/1688-54-0x0000000010EA0000-0x0000000010F54000-memory.dmp
memory/1688-57-0x0000000000280000-0x000000000028A000-memory.dmp
memory/1688-56-0x0000000004E00000-0x0000000004E01000-memory.dmp
memory/1688-55-0x0000000076151000-0x0000000076153000-memory.dmp
memory/1784-61-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1784-62-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1784-63-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1784-64-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1784-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1784-66-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1784-68-0x0000000001FC0000-0x0000000001FC1000-memory.dmp