Analysis
- max time kernel
116s - max time network
117s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
16/04/2024, 20:50
General
- Target rNNA.exe
- Size 770KB
- Sample240416-zmkdfscc66
- SHA256 6f786b8f8dd18709b9e4ad44e33cb1074d55aa2f0f3cd1fe3759e8795df0a3a9
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.pbjv.net
-
Port
587
-
Username
-
Password
muthu12345***
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.pbjv.net
-
Port
587
-
Username
-
Password
muthu12345***
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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.
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\rNNA.exe"C:\Users\Admin\AppData\Local\Temp\rNNA.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- 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\wZnyuP.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wZnyuP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp610C.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\rNNA.exe"C:\Users\Admin\AppData\Local\Temp\rNNA.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_3m3ewmqo.txq.ps1
tmp610C.tmp
memory/2348-55-0x0000000007E60000-0x00000000084DA000-memory.dmp
memory/2348-20-0x0000000005750000-0x0000000005D78000-memory.dmp
memory/2348-67-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/2348-64-0x0000000007B30000-0x0000000007B38000-memory.dmp
memory/2348-63-0x0000000007B50000-0x0000000007B6A000-memory.dmp
memory/2348-62-0x0000000007A50000-0x0000000007A64000-memory.dmp
memory/2348-61-0x0000000007A40000-0x0000000007A4E000-memory.dmp
memory/2348-59-0x0000000007A10000-0x0000000007A21000-memory.dmp
memory/2348-58-0x0000000007A90000-0x0000000007B26000-memory.dmp
memory/2348-57-0x0000000007880000-0x000000000788A000-memory.dmp
memory/2348-16-0x0000000002BE0000-0x0000000002C16000-memory.dmp
memory/2348-17-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/2348-56-0x0000000007810000-0x000000000782A000-memory.dmp
memory/2348-40-0x0000000006530000-0x000000000657C000-memory.dmp
memory/2348-22-0x0000000002CE0000-0x0000000002CF0000-memory.dmp
memory/2348-54-0x0000000007530000-0x00000000075D3000-memory.dmp
memory/2348-19-0x0000000002CE0000-0x0000000002CF0000-memory.dmp
memory/2348-53-0x0000000006A70000-0x0000000006A8E000-memory.dmp
memory/2348-43-0x00000000707F0000-0x000000007083C000-memory.dmp
memory/2348-42-0x0000000006AA0000-0x0000000006AD2000-memory.dmp
memory/2348-28-0x0000000005E20000-0x0000000005E86000-memory.dmp
memory/2348-27-0x0000000005520000-0x0000000005542000-memory.dmp
memory/2348-41-0x000000007F220000-0x000000007F230000-memory.dmp
memory/2348-38-0x0000000006070000-0x00000000063C4000-memory.dmp
memory/2348-39-0x00000000064D0000-0x00000000064EE000-memory.dmp
memory/4476-3-0x00000000056C0000-0x0000000005752000-memory.dmp
memory/4476-7-0x0000000006CA0000-0x0000000006CB2000-memory.dmp
memory/4476-4-0x0000000005880000-0x0000000005890000-memory.dmp
memory/4476-25-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/4476-5-0x0000000005650000-0x000000000565A000-memory.dmp
memory/4476-6-0x00000000084D0000-0x0000000008570000-memory.dmp
memory/4476-0-0x0000000000B80000-0x0000000000C46000-memory.dmp
memory/4476-2-0x0000000005BD0000-0x0000000006174000-memory.dmp
memory/4476-11-0x000000000AEF0000-0x000000000AF8C000-memory.dmp
memory/4476-10-0x0000000008720000-0x00000000087A2000-memory.dmp
memory/4476-9-0x0000000008480000-0x000000000848C000-memory.dmp
memory/4476-1-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/4476-8-0x0000000006CE0000-0x0000000006CE8000-memory.dmp
memory/5088-60-0x00000000067F0000-0x0000000006840000-memory.dmp
memory/5088-21-0x0000000000400000-0x0000000000440000-memory.dmp
memory/5088-24-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/5088-26-0x00000000059E0000-0x0000000005A46000-memory.dmp
memory/5088-68-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/5088-69-0x0000000003180000-0x0000000003190000-memory.dmp