Analysis
- max time kernel
145s - max time network
55s - platform
windows7_x64 - resource
win7v20210408 - 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 6 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 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\tmp1B6C.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/684-62-0x0000000004DC0000-0x0000000004DC1000-memory.dmp
memory/684-63-0x00000000004C0000-0x00000000004CA000-memory.dmp
memory/684-64-0x0000000004D20000-0x0000000004D79000-memory.dmp
memory/684-60-0x0000000000E60000-0x0000000000E61000-memory.dmp
memory/1460-72-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1460-112-0x0000000004AB1000-0x0000000004AB2000-memory.dmp
memory/1460-77-0x0000000004AB0000-0x0000000004AB1000-memory.dmp
memory/1460-74-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1772-67-0x0000000000830000-0x0000000000831000-memory.dmp
memory/1772-81-0x0000000005FE0000-0x0000000005FE1000-memory.dmp
memory/1772-71-0x0000000004912000-0x0000000004913000-memory.dmp
memory/1772-68-0x0000000004950000-0x0000000004951000-memory.dmp
memory/1772-76-0x00000000022A0000-0x00000000022A1000-memory.dmp
memory/1772-66-0x0000000075C71000-0x0000000075C73000-memory.dmp
memory/1772-78-0x00000000048D0000-0x00000000048D1000-memory.dmp
memory/1772-70-0x0000000004910000-0x0000000004911000-memory.dmp
memory/1772-83-0x000000007EF30000-0x000000007EF31000-memory.dmp
memory/1772-87-0x0000000006040000-0x0000000006041000-memory.dmp
memory/1772-88-0x00000000060E0000-0x00000000060E1000-memory.dmp
memory/1772-95-0x0000000006240000-0x0000000006241000-memory.dmp
memory/1772-96-0x00000000061E0000-0x00000000061E1000-memory.dmp
memory/1772-110-0x0000000006300000-0x0000000006301000-memory.dmp
memory/1772-111-0x0000000006310000-0x0000000006311000-memory.dmp