Analysis
- max time kernel
153s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
08/09/2022, 10:59
General
- Target SecuriteInfo.com.MSIL.Agent.NHM.tr.dldr.14525.exe
- Size 922KB
- Sample220908-m3dvdsbefr
- SHA256 88b00afd2b4f33893e8ca2dfb3a40cfa15d990d731cb1b15617a8f606b5672d0
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5083863399:AAH9g72QTdN88jNOd6_tBrE8gEd-FpXnfHE/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.MSIL.Agent.NHM.tr.dldr.14525.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.MSIL.Agent.NHM.tr.dldr.14525.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2168-148-0x0000000001490000-0x000000000149A000-memory.dmp
memory/2168-147-0x0000000006C90000-0x0000000006CE0000-memory.dmp
memory/2168-146-0x0000000005A50000-0x0000000005AEC000-memory.dmp
memory/2168-145-0x00000000057E0000-0x0000000005872000-memory.dmp
memory/2168-144-0x0000000005E40000-0x00000000063E4000-memory.dmp
memory/2168-143-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4588-136-0x0000000005440000-0x0000000005A68000-memory.dmp
memory/4588-140-0x00000000079C0000-0x000000000803A000-memory.dmp
memory/4588-141-0x00000000066C0000-0x00000000066DA000-memory.dmp
memory/4588-139-0x00000000061B0000-0x00000000061CE000-memory.dmp
memory/4588-138-0x0000000005AE0000-0x0000000005B46000-memory.dmp
memory/4588-137-0x0000000005280000-0x00000000052E6000-memory.dmp
memory/4588-135-0x0000000002BE0000-0x0000000002C16000-memory.dmp
memory/4908-132-0x00000000003A0000-0x000000000048C000-memory.dmp
memory/4908-133-0x0000000005060000-0x0000000005082000-memory.dmp