Analysis
- max time kernel
124s - max time network
111s - platform
windows10_x64 - resource
win10v20201028 - submitted
31/03/2021, 06:00
General
- Target SHIPPING DOCUMENTS_PDF.exe
- Size 1.1MB
- Sample210331-9l644tl1a6
- SHA256 23cd04354a8a5eea8fc0908ae207a8d8c0449dd038cca3370e34d67cd74d2a77
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.esayauto.com
-
Port
587
-
Username
-
Password
jnrg@123
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 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
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS_PDF.exe"C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS_PDF.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS_PDF.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/4360-14-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4360-23-0x0000000005BA0000-0x0000000005BA1000-memory.dmp
memory/4360-22-0x0000000005620000-0x0000000005621000-memory.dmp
memory/4360-17-0x0000000073530000-0x0000000073C1E000-memory.dmp
memory/4716-7-0x00000000051C0000-0x00000000051C1000-memory.dmp
memory/4716-10-0x0000000008890000-0x0000000008891000-memory.dmp
memory/4716-11-0x0000000009D00000-0x0000000009DC5000-memory.dmp
memory/4716-12-0x000000000C1B0000-0x000000000C234000-memory.dmp
memory/4716-13-0x000000000F240000-0x000000000F241000-memory.dmp
memory/4716-9-0x0000000005400000-0x0000000005405000-memory.dmp
memory/4716-8-0x0000000005420000-0x0000000005421000-memory.dmp
memory/4716-2-0x0000000073530000-0x0000000073C1E000-memory.dmp
memory/4716-6-0x0000000005220000-0x0000000005221000-memory.dmp
memory/4716-5-0x0000000005720000-0x0000000005721000-memory.dmp
memory/4716-3-0x0000000000880000-0x0000000000881000-memory.dmp