Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
04/06/2024, 22:34
General
- Target 674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d.exe
- Size 596KB
- Sample240604-2hheeadg2z
- SHA256 674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
SMTP.yandex.com
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Port
587
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Username
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Password
vrsbsgycxhmlbpot
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Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
- 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 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
- 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 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 12 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d.exe"C:\Users\Admin\AppData\Local\Temp\674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- 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\674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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\Roaming\JxSYqufxBOUlgK.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JxSYqufxBOUlgK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp81F1.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d.exe"C:\Users\Admin\AppData\Local\Temp\674ead9814f3b34e0e702c6095739aa36eb87fc2abdfc99deadb52fa3794016d.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
1Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_kdolf42q.xvd.ps1
tmp81F1.tmp
memory/976-49-0x0000000005E90000-0x0000000005EAE000-memory.dmp
memory/976-26-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/976-39-0x0000000005840000-0x0000000005B94000-memory.dmp
memory/976-78-0x00000000073B0000-0x00000000073C1000-memory.dmp
memory/976-66-0x00000000750A0000-0x00000000750EC000-memory.dmp
memory/976-19-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/976-90-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/976-16-0x0000000002560000-0x0000000002596000-memory.dmp
memory/976-50-0x0000000005F10000-0x0000000005F5C000-memory.dmp
memory/976-22-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/976-77-0x0000000007430000-0x00000000074C6000-memory.dmp
memory/4280-27-0x0000000000400000-0x0000000000430000-memory.dmp
memory/4280-91-0x0000000007010000-0x0000000007060000-memory.dmp
memory/4280-92-0x0000000007230000-0x00000000073F2000-memory.dmp
memory/4356-0-0x00000000747FE000-0x00000000747FF000-memory.dmp
memory/4356-10-0x0000000009190000-0x000000000922C000-memory.dmp
memory/4356-9-0x00000000069B0000-0x0000000006A22000-memory.dmp
memory/4356-8-0x0000000005AF0000-0x0000000005B00000-memory.dmp
memory/4356-7-0x0000000006C30000-0x0000000006C4A000-memory.dmp
memory/4356-6-0x0000000006BA0000-0x0000000006C2E000-memory.dmp
memory/4356-48-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/4356-5-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/4356-4-0x0000000005710000-0x000000000571A000-memory.dmp
memory/4356-3-0x0000000005560000-0x00000000055F2000-memory.dmp
memory/4356-2-0x0000000005B10000-0x00000000060B4000-memory.dmp
memory/4356-1-0x0000000000AC0000-0x0000000000B5A000-memory.dmp
memory/4812-15-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/4812-52-0x00000000750A0000-0x00000000750EC000-memory.dmp
memory/4812-51-0x0000000007520000-0x0000000007552000-memory.dmp
memory/4812-65-0x00000000078B0000-0x00000000078CA000-memory.dmp
memory/4812-64-0x0000000007F00000-0x000000000857A000-memory.dmp
memory/4812-63-0x0000000007780000-0x0000000007823000-memory.dmp
memory/4812-76-0x0000000007920000-0x000000000792A000-memory.dmp
memory/4812-62-0x0000000007760000-0x000000000777E000-memory.dmp
memory/4812-23-0x00000000055D0000-0x00000000055F2000-memory.dmp
memory/4812-79-0x0000000007AE0000-0x0000000007AEE000-memory.dmp
memory/4812-80-0x0000000007AF0000-0x0000000007B04000-memory.dmp
memory/4812-82-0x0000000007BD0000-0x0000000007BD8000-memory.dmp
memory/4812-81-0x0000000007BF0000-0x0000000007C0A000-memory.dmp
memory/4812-24-0x00000000056F0000-0x0000000005756000-memory.dmp
memory/4812-25-0x0000000005F50000-0x0000000005FB6000-memory.dmp
memory/4812-89-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/4812-20-0x00000000747F0000-0x0000000074FA0000-memory.dmp
memory/4812-18-0x0000000005770000-0x0000000005D98000-memory.dmp
memory/4812-17-0x00000000747F0000-0x0000000074FA0000-memory.dmp