Analysis
- max time kernel
137s - max time network
119s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
04/10/2021, 16:28
General
- Target #RFQ SUPPLY Unilever House UK.exe
- Size 748KB
- Sample211004-typ57aggdm
- SHA256 a8c0c2fcf4f6dbcaafc53a6c9cd3c50a58b6429d240577530e368ce4e27df294
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.regalbelloit.com
-
Port
587
-
Username
-
Password
sSAfydK0
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- 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.
- 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 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\#RFQ SUPPLY Unilever House UK.exe"C:\Users\Admin\AppData\Local\Temp\#RFQ SUPPLY Unilever House UK.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- 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\#RFQ SUPPLY Unilever House UK.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PHjbSSqEUkFPw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4538.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\#RFQ SUPPLY Unilever House UK.exe"C:\Users\Admin\AppData\Local\Temp\#RFQ SUPPLY Unilever House UK.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1204-135-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1204-144-0x0000000005510000-0x0000000005A0E000-memory.dmp
memory/1204-383-0x0000000005960000-0x0000000005961000-memory.dmp
memory/1776-122-0x00000000059C0000-0x00000000059CA000-memory.dmp
memory/1776-121-0x0000000005AA0000-0x0000000005AA1000-memory.dmp
memory/1776-123-0x0000000008110000-0x0000000008169000-memory.dmp
memory/1776-120-0x0000000005730000-0x0000000005731000-memory.dmp
memory/1776-125-0x0000000008BE0000-0x0000000008BE1000-memory.dmp
memory/1776-119-0x0000000005800000-0x0000000005CFE000-memory.dmp
memory/1776-118-0x0000000005740000-0x0000000005741000-memory.dmp
memory/1776-117-0x0000000005D00000-0x0000000005D01000-memory.dmp
memory/1776-115-0x0000000000E30000-0x0000000000E31000-memory.dmp
memory/2756-134-0x0000000007500000-0x0000000007501000-memory.dmp
memory/2756-146-0x0000000007EB0000-0x0000000007EB1000-memory.dmp
memory/2756-131-0x0000000006702000-0x0000000006703000-memory.dmp
memory/2756-130-0x0000000006700000-0x0000000006701000-memory.dmp
memory/2756-129-0x0000000006D80000-0x0000000006D81000-memory.dmp
memory/2756-138-0x0000000007830000-0x0000000007831000-memory.dmp
memory/2756-143-0x0000000007650000-0x0000000007651000-memory.dmp
memory/2756-145-0x0000000008000000-0x0000000008001000-memory.dmp
memory/2756-128-0x0000000006710000-0x0000000006711000-memory.dmp
memory/2756-133-0x0000000007460000-0x0000000007461000-memory.dmp
memory/2756-154-0x0000000008EA0000-0x0000000008ED3000-memory.dmp
memory/2756-161-0x0000000008E60000-0x0000000008E61000-memory.dmp
memory/2756-166-0x0000000008FD0000-0x0000000008FD1000-memory.dmp
memory/2756-167-0x000000007F5F0000-0x000000007F5F1000-memory.dmp
memory/2756-168-0x0000000006703000-0x0000000006704000-memory.dmp
memory/2756-169-0x0000000009190000-0x0000000009191000-memory.dmp
memory/2756-362-0x0000000009140000-0x0000000009141000-memory.dmp
memory/2756-368-0x0000000009130000-0x0000000009131000-memory.dmp