Analysis
- max time kernel
133s - max time network
120s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
01/06/2024, 02:02
General
- Target fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3.exe
- Size 717KB
- Sample240601-cf82xaea51
- SHA256 fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.formosabag.co.id
-
Port
587
-
Username
-
Password
@2022exim02^^**
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.formosabag.co.id
-
Port
587
-
Username
-
Password
@2022exim02^^**
-
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 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 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.
- 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3.exe"C:\Users\Admin\AppData\Local\Temp\fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3.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\Local\Temp\fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- 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\drpeBYm.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\drpeBYm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA1DD.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3.exe"C:\Users\Admin\AppData\Local\Temp\fffe301ce73fde6ee8c35f49fa5045ba25c37d433d657f885e10aae3c1c2b4c3.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
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_di3ih11v.cuk.ps1
tmpA1DD.tmp
memory/808-6-0x0000000005EF0000-0x0000000005F08000-memory.dmp
memory/808-5-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/808-4-0x0000000004AB0000-0x0000000004ABA000-memory.dmp
memory/808-7-0x0000000004C70000-0x0000000004C80000-memory.dmp
memory/808-8-0x0000000007590000-0x0000000007614000-memory.dmp
memory/808-9-0x0000000009CC0000-0x0000000009D5C000-memory.dmp
memory/808-3-0x0000000004B40000-0x0000000004BD2000-memory.dmp
memory/808-2-0x00000000050F0000-0x0000000005694000-memory.dmp
memory/808-49-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/808-1-0x0000000000010000-0x00000000000C4000-memory.dmp
memory/808-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp
memory/1948-20-0x0000000005530000-0x0000000005596000-memory.dmp
memory/1948-78-0x0000000007130000-0x0000000007141000-memory.dmp
memory/1948-21-0x00000000055A0000-0x0000000005606000-memory.dmp
memory/1948-89-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/1948-14-0x0000000002300000-0x0000000002336000-memory.dmp
memory/1948-25-0x0000000005610000-0x0000000005964000-memory.dmp
memory/1948-15-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/1948-18-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/1948-19-0x0000000004D60000-0x0000000004D82000-memory.dmp
memory/1948-17-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/1948-47-0x0000000005C10000-0x0000000005C2E000-memory.dmp
memory/1948-48-0x0000000005CE0000-0x0000000005D2C000-memory.dmp
memory/1948-16-0x0000000004DD0000-0x00000000053F8000-memory.dmp
memory/1948-82-0x0000000007250000-0x0000000007258000-memory.dmp
memory/1948-61-0x00000000702A0000-0x00000000702EC000-memory.dmp
memory/1948-81-0x0000000007270000-0x000000000728A000-memory.dmp
memory/1948-80-0x0000000007170000-0x0000000007184000-memory.dmp
memory/1948-72-0x0000000006DE0000-0x0000000006E83000-memory.dmp
memory/1948-76-0x00000000071B0000-0x0000000007246000-memory.dmp
memory/1948-75-0x0000000006FA0000-0x0000000006FAA000-memory.dmp
memory/2008-74-0x0000000007A00000-0x0000000007A1A000-memory.dmp
memory/2008-73-0x0000000008050000-0x00000000086CA000-memory.dmp
memory/2008-24-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/2008-79-0x0000000007C30000-0x0000000007C3E000-memory.dmp
memory/2008-50-0x00000000076D0000-0x0000000007702000-memory.dmp
memory/2008-71-0x0000000006C10000-0x0000000006C2E000-memory.dmp
memory/2008-51-0x00000000702A0000-0x00000000702EC000-memory.dmp
memory/2008-22-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/2008-90-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/2008-26-0x0000000074DE0000-0x0000000075590000-memory.dmp
memory/3956-83-0x0000000006760000-0x00000000067B0000-memory.dmp
memory/3956-42-0x0000000000400000-0x0000000000442000-memory.dmp