Analysis
- max time kernel
85s - max time network
14s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 19:30
General
- Target RFQ-PR# PR1787523 (BA).doc.exe
- Size 456KB
- Sample201109-3cheym4ala
- SHA256 82d3edc9ad7ba25feca5ef08641b0f030d92faa5dec17f3148e062b727a0240c
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.toorsteel.com
-
Port
587
-
Username
-
Password
6652372
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Modifies Windows Defender Real-time Protection settings 3 TTPs
- AgentTesla Payload 4 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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.
- Windows security modification 2 TTPs 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies registry key 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 29 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RFQ-PR# PR1787523 (BA).doc.exe"C:\Users\Admin\AppData\Local\Temp\RFQ-PR# PR1787523 (BA).doc.exe"1⤵
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JoZfmrfomWO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6CF6.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\RFQ-PR# PR1787523 (BA).doc.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\RFQ-PR# PR1787523 (BA).doc.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
-
-
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/596-0-0x0000000073D40000-0x000000007442E000-memory.dmp
memory/596-3-0x0000000000510000-0x0000000000513000-memory.dmp
memory/596-4-0x0000000000B90000-0x0000000000BE4000-memory.dmp
memory/596-1-0x0000000000FF0000-0x0000000000FF1000-memory.dmp
memory/1340-49-0x0000000073D40000-0x000000007442E000-memory.dmp
memory/1340-48-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1340-47-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1340-45-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1420-8-0x0000000004A30000-0x0000000004A31000-memory.dmp
memory/1420-27-0x0000000005FC0000-0x0000000005FC1000-memory.dmp
memory/1420-41-0x0000000006320000-0x0000000006321000-memory.dmp
memory/1420-42-0x0000000006330000-0x0000000006331000-memory.dmp
memory/1420-26-0x0000000006260000-0x0000000006261000-memory.dmp
memory/1420-19-0x00000000061B0000-0x00000000061B1000-memory.dmp
memory/1420-18-0x00000000060A0000-0x00000000060A1000-memory.dmp
memory/1420-13-0x0000000006000000-0x0000000006001000-memory.dmp
memory/1420-10-0x0000000004970000-0x0000000004971000-memory.dmp
memory/1420-9-0x00000000025D0000-0x00000000025D1000-memory.dmp
memory/1420-7-0x00000000008E0000-0x00000000008E1000-memory.dmp
memory/1420-6-0x0000000073D40000-0x000000007442E000-memory.dmp