Analysis
- max time kernel
119s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
27/02/2024, 21:38
General
- Target microzx.scr.exe
- Size 691KB
- Sample240227-1g2afscc7v
- SHA256 63cbf8a0edc294245e2e379283862d7e87e13a559c5493bb1f217e2d660c30e0
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
tssveohxktcpzhdm
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
tssveohxktcpzhdm
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- 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.
- 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).
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=2700 --field-trial-handle=2264,i,13734085038406049477,12426093271221802693,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_k4hautvh.1j0.ps1
memory/772-51-0x0000000006EA0000-0x0000000006EBA000-memory.dmp
memory/772-50-0x00000000074E0000-0x0000000007B5A000-memory.dmp
memory/772-62-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/772-59-0x00000000071E0000-0x00000000071E8000-memory.dmp
memory/772-58-0x00000000071F0000-0x000000000720A000-memory.dmp
memory/772-57-0x0000000007100000-0x0000000007114000-memory.dmp
memory/772-56-0x00000000070F0000-0x00000000070FE000-memory.dmp
memory/772-55-0x00000000070A0000-0x00000000070B1000-memory.dmp
memory/772-54-0x0000000007120000-0x00000000071B6000-memory.dmp
memory/772-52-0x0000000006F10000-0x0000000006F1A000-memory.dmp
memory/772-22-0x0000000004BB0000-0x0000000004BD2000-memory.dmp
memory/772-13-0x0000000002260000-0x0000000002296000-memory.dmp
memory/772-49-0x0000000006B60000-0x0000000006C03000-memory.dmp
memory/772-48-0x0000000006140000-0x000000000615E000-memory.dmp
memory/772-16-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/772-18-0x0000000004860000-0x0000000004870000-memory.dmp
memory/772-17-0x0000000004860000-0x0000000004870000-memory.dmp
memory/772-38-0x0000000071A80000-0x0000000071ACC000-memory.dmp
memory/772-37-0x0000000006160000-0x0000000006192000-memory.dmp
memory/772-21-0x0000000004EA0000-0x00000000054C8000-memory.dmp
memory/772-36-0x0000000004860000-0x0000000004870000-memory.dmp
memory/772-35-0x0000000005BD0000-0x0000000005C1C000-memory.dmp
memory/772-23-0x0000000004C50000-0x0000000004CB6000-memory.dmp
memory/772-33-0x00000000056D0000-0x0000000005A24000-memory.dmp
memory/772-34-0x0000000005B90000-0x0000000005BAE000-memory.dmp
memory/3268-2-0x0000000005FA0000-0x0000000006544000-memory.dmp
memory/3268-6-0x0000000005C30000-0x0000000005C4C000-memory.dmp
memory/3268-3-0x0000000005A90000-0x0000000005B22000-memory.dmp
memory/3268-8-0x0000000006D50000-0x0000000006D62000-memory.dmp
memory/3268-15-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/3268-4-0x0000000005C60000-0x0000000005C70000-memory.dmp
memory/3268-5-0x0000000005B50000-0x0000000005B5A000-memory.dmp
memory/3268-10-0x000000000FEE0000-0x000000000FF7C000-memory.dmp
memory/3268-1-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/3268-9-0x0000000003320000-0x00000000033A2000-memory.dmp
memory/3268-0-0x0000000000FC0000-0x0000000001072000-memory.dmp
memory/3268-7-0x0000000005F90000-0x0000000005F9C000-memory.dmp
memory/3632-53-0x0000000007080000-0x00000000070D0000-memory.dmp
memory/3632-20-0x00000000057F0000-0x0000000005800000-memory.dmp
memory/3632-11-0x0000000000400000-0x0000000000440000-memory.dmp
memory/3632-14-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/3632-19-0x0000000005900000-0x0000000005966000-memory.dmp
memory/3632-63-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/3632-64-0x00000000057F0000-0x0000000005800000-memory.dmp