Analysis
- max time kernel
144s - max time network
11s - platform
windows7_x64 - resource
win7v20201028 - submitted
08/12/2020, 16:45
General
- Target sup.exe
- Size 537KB
- Sample201208-sw8jcds91s
- SHA256 72b63832c576de64ecf5cf7ef03f9658ebd495c9ecac7ce9a3e1bbf7bde38e75
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.virtualbridge-qatar.com
-
Port
587
-
Username
-
Password
Vbt@dana99
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
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\sup.exe"C:\Users\Admin\AppData\Local\Temp\sup.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\sup.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1192-7-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1192-10-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1192-9-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1192-11-0x00000000741A0000-0x000000007488E000-memory.dmp
memory/1744-2-0x00000000741A0000-0x000000007488E000-memory.dmp
memory/1744-3-0x0000000001260000-0x0000000001261000-memory.dmp
memory/1744-5-0x00000000002A0000-0x00000000002AE000-memory.dmp
memory/1744-6-0x0000000005680000-0x00000000056FD000-memory.dmp