Analysis
- max time kernel
139s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
25/08/2024, 09:21
General
- Target RFQ #HU4759GK3891.scr.exe
- Size 698KB
- Sample240825-lbbqaawfpe
- SHA256 4b24c70ea3b3b855220f38d41b54c8c00a2e1f9c8fdfb3432c6bb9ab30480e64
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.merlinmotorworks.com
-
Port
587
-
Username
-
Password
Merlin1080S
Extracted
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agenttesla
-
Protocol
smtp
-
Host
mail.merlinmotorworks.com
-
Port
587
-
Username
-
Password
Merlin1080S
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 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 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).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 25 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vmWHtb.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vmWHtb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4E3A.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"C:\Users\Admin\AppData\Local\Temp\RFQ #HU4759GK3891.scr.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_c1wnk4au.w52.ps1
tmp4E3A.tmp
memory/2484-50-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/2484-11-0x0000000006520000-0x00000000065A4000-memory.dmp
memory/2484-6-0x00000000053C0000-0x00000000053D2000-memory.dmp
memory/2484-7-0x0000000074B4E000-0x0000000074B4F000-memory.dmp
memory/2484-8-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/2484-9-0x0000000005430000-0x0000000005438000-memory.dmp
memory/2484-10-0x0000000005440000-0x000000000544C000-memory.dmp
memory/2484-3-0x0000000005190000-0x0000000005222000-memory.dmp
memory/2484-12-0x0000000008B60000-0x0000000008BFC000-memory.dmp
memory/2484-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp
memory/2484-1-0x0000000000710000-0x00000000007C4000-memory.dmp
memory/2484-2-0x0000000005810000-0x0000000005DB4000-memory.dmp
memory/2484-4-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/2484-5-0x0000000005170000-0x000000000517A000-memory.dmp
memory/3268-92-0x00000000066B0000-0x0000000006700000-memory.dmp
memory/3268-44-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3396-20-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3396-26-0x0000000005660000-0x0000000005682000-memory.dmp
memory/3396-17-0x0000000002D00000-0x0000000002D36000-memory.dmp
memory/3396-90-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3396-27-0x0000000005700000-0x0000000005766000-memory.dmp
memory/3396-19-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3396-21-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3396-28-0x0000000005770000-0x00000000057D6000-memory.dmp
memory/3396-18-0x00000000058C0000-0x0000000005EE8000-memory.dmp
memory/3396-51-0x0000000006610000-0x000000000662E000-memory.dmp
memory/3396-52-0x00000000066B0000-0x00000000066FC000-memory.dmp
memory/3396-64-0x00000000075D0000-0x00000000075EE000-memory.dmp
memory/3396-80-0x0000000007B40000-0x0000000007B51000-memory.dmp
memory/3396-65-0x0000000007600000-0x00000000076A3000-memory.dmp
memory/3396-54-0x00000000711E0000-0x000000007122C000-memory.dmp
memory/3396-53-0x0000000007590000-0x00000000075C2000-memory.dmp
memory/3396-76-0x0000000007F80000-0x00000000085FA000-memory.dmp
memory/3396-77-0x0000000007940000-0x000000000795A000-memory.dmp
memory/3396-78-0x00000000079B0000-0x00000000079BA000-memory.dmp
memory/3584-79-0x0000000007820000-0x00000000078B6000-memory.dmp
memory/3584-66-0x00000000711E0000-0x000000007122C000-memory.dmp
memory/3584-81-0x00000000077D0000-0x00000000077DE000-memory.dmp
memory/3584-25-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3584-83-0x00000000078E0000-0x00000000078FA000-memory.dmp
memory/3584-84-0x00000000078C0000-0x00000000078C8000-memory.dmp
memory/3584-82-0x00000000077E0000-0x00000000077F4000-memory.dmp
memory/3584-22-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3584-91-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3584-24-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3584-45-0x0000000005CA0000-0x0000000005FF4000-memory.dmp