Analysis
- max time kernel
148s - max time network
138s - platform
windows7_x64 - resource
win7 - submitted
22/09/2020, 12:00
General
- Target SecuriteInfo.com.Generic.mg.994c2b46c2ce88f0.25415.exe
- Size 731KB
- Sample200922-tgskdatqln
- SHA256 dc4eaa151b01375e0ba2392396b60e6abebab99e5590c93ab23ee3063aba5eb5
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.dms-train.com
-
Port
587
-
Username
-
Password
general2017
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.994c2b46c2ce88f0.25415.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.994c2b46c2ce88f0.25415.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DqeFxC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE762.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.994c2b46c2ce88f0.25415.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.994c2b46c2ce88f0.25415.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1164-0-0x0000000074200000-0x00000000748EE000-memory.dmp
memory/1164-1-0x0000000001100000-0x0000000001101000-memory.dmp
memory/1164-3-0x0000000000280000-0x0000000000283000-memory.dmp
memory/1164-4-0x0000000005260000-0x00000000052B7000-memory.dmp
memory/1164-5-0x0000000000BA0000-0x0000000000BDB000-memory.dmp
memory/1944-8-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1944-10-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1944-11-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1944-12-0x0000000074200000-0x00000000748EE000-memory.dmp