Analysis
- max time kernel
114s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
26/10/2022, 01:17
General
- Target SecuriteInfo.com.Variant.Jaik.101025.29740.18997.exe
- Size 402KB
- Sample221026-bndejaedcl
- SHA256 50c4459f6a2ff06bd104a1776c03b2880be40ea9125bc21ee13f0424f0dcffa1
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.wckiralama.com
-
Port
587
-
Username
-
Password
@wckiralama.com
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 3 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Jaik.101025.29740.18997.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Jaik.101025.29740.18997.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\gzrrzf.exe"C:\Users\Admin\AppData\Local\Temp\gzrrzf.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\gzrrzf.exe"C:\Users\Admin\AppData\Local\Temp\gzrrzf.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
gzrrzf.exe
gzrrzf.exe
gzrrzf.exe
ptsdf.vdn
zymxujwrzef.k
memory/368-139-0x0000000000400000-0x000000000044E000-memory.dmp
memory/368-140-0x00000000049B0000-0x0000000004F54000-memory.dmp
memory/368-141-0x0000000004FC0000-0x000000000505C000-memory.dmp
memory/368-142-0x0000000005970000-0x00000000059D6000-memory.dmp
memory/368-143-0x0000000006320000-0x0000000006370000-memory.dmp
memory/368-144-0x00000000064B0000-0x0000000006542000-memory.dmp
memory/368-145-0x0000000006860000-0x000000000686A000-memory.dmp