Analysis
- max time kernel
75s - max time network
112s - platform
windows10_x64 - resource
win10v200722 - submitted
09/09/2020, 06:22
General
- Target Request for Quotation.exe
- Size 641KB
- Sample200909-apcn99y4an
- SHA256 c3ff2e79a8c6e932bd5c6ba0898916ca3382e27f0d33c153dca12f061bc2c708
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.davaobay.com.ph
-
Port
587
-
Username
-
Password
p@ssw0rd
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Drops file in Drivers directory 1 IoCs
- 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
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 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 data under HKEY_USERS 5 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KfRoztIBEy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp47D7.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/508-9-0x0000000005C10000-0x0000000005C11000-memory.dmp
memory/508-10-0x0000000005980000-0x0000000005A05000-memory.dmp
memory/508-5-0x0000000004A60000-0x0000000004A61000-memory.dmp
memory/508-6-0x0000000004AA0000-0x0000000004AA3000-memory.dmp
memory/508-7-0x00000000053A0000-0x00000000053A1000-memory.dmp
memory/508-8-0x0000000005AE0000-0x0000000005B6A000-memory.dmp
memory/508-0-0x0000000073120000-0x000000007380E000-memory.dmp
memory/508-4-0x00000000049A0000-0x00000000049A1000-memory.dmp
memory/508-1-0x0000000000010000-0x0000000000011000-memory.dmp
memory/508-3-0x0000000004EA0000-0x0000000004EA1000-memory.dmp
memory/3068-13-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3068-16-0x0000000073120000-0x000000007380E000-memory.dmp
memory/3068-21-0x0000000005610000-0x0000000005611000-memory.dmp
memory/3068-22-0x0000000006130000-0x0000000006131000-memory.dmp