Analysis
- max time kernel
117s - max time network
119s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
07/06/2024, 01:50
General
- Target 7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe
- Size 764KB
- Sample240607-b9j47sff7x
- SHA256 7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad
Malware Config
Extracted
-
Protocol
smtp
-
Host
nffplp.com
-
Port
587
-
Username
-
Password
$Nke%8XIIDtm
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
nffplp.com
-
Port
587
-
Username
-
Password
$Nke%8XIIDtm
-
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 binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 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
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- 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.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"1⤵
- Checks computer location settings
- 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\rUaSsXwbr.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rUaSsXwbr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6801.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_thef5mnf.z12.ps1
tmp6801.tmp
memory/1296-11-0x0000000009090000-0x000000000912C000-memory.dmp
memory/1296-0-0x00000000751AE000-0x00000000751AF000-memory.dmp
memory/1296-37-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/1296-5-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/1296-6-0x0000000006910000-0x00000000069C8000-memory.dmp
memory/1296-7-0x0000000006CA0000-0x0000000006CB6000-memory.dmp
memory/1296-8-0x00000000064A0000-0x00000000064AE000-memory.dmp
memory/1296-9-0x00000000064B0000-0x00000000064C0000-memory.dmp
memory/1296-10-0x0000000006510000-0x0000000006594000-memory.dmp
memory/1296-3-0x00000000052E0000-0x0000000005372000-memory.dmp
memory/1296-2-0x00000000057F0000-0x0000000005D94000-memory.dmp
memory/1296-1-0x0000000000940000-0x0000000000A00000-memory.dmp
memory/1296-4-0x00000000052C0000-0x00000000052CA000-memory.dmp
memory/4076-25-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4076-66-0x0000000006920000-0x0000000006970000-memory.dmp
memory/4076-38-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/4076-67-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/4384-17-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/4384-55-0x0000000007A40000-0x0000000007A5A000-memory.dmp
memory/4384-22-0x0000000006040000-0x00000000060A6000-memory.dmp
memory/4384-23-0x00000000060B0000-0x0000000006116000-memory.dmp
memory/4384-18-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/4384-19-0x00000000058E0000-0x0000000005F08000-memory.dmp
memory/4384-39-0x0000000006720000-0x000000000673E000-memory.dmp
memory/4384-40-0x00000000067B0000-0x00000000067FC000-memory.dmp
memory/4384-21-0x0000000005860000-0x0000000005882000-memory.dmp
memory/4384-41-0x0000000006CE0000-0x0000000006D12000-memory.dmp
memory/4384-53-0x0000000007910000-0x00000000079B3000-memory.dmp
memory/4384-52-0x0000000006CB0000-0x0000000006CCE000-memory.dmp
memory/4384-42-0x0000000071840000-0x000000007188C000-memory.dmp
memory/4384-31-0x0000000006120000-0x0000000006474000-memory.dmp
memory/4384-54-0x0000000008080000-0x00000000086FA000-memory.dmp
memory/4384-56-0x0000000007AB0000-0x0000000007ABA000-memory.dmp
memory/4384-57-0x0000000007CC0000-0x0000000007D56000-memory.dmp
memory/4384-58-0x0000000007C40000-0x0000000007C51000-memory.dmp
memory/4384-59-0x0000000007C70000-0x0000000007C7E000-memory.dmp
memory/4384-60-0x0000000007C80000-0x0000000007C94000-memory.dmp
memory/4384-62-0x0000000007D60000-0x0000000007D68000-memory.dmp
memory/4384-61-0x0000000007D80000-0x0000000007D9A000-memory.dmp
memory/4384-65-0x00000000751A0000-0x0000000075950000-memory.dmp
memory/4384-16-0x0000000005160000-0x0000000005196000-memory.dmp
memory/4384-24-0x00000000751A0000-0x0000000075950000-memory.dmp