Analysis
- max time kernel
54s - max time network
103s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
03/02/2023, 14:08
General
- Target Fatura_8486472023.exe
- Size 556KB
- Sample230203-rfj54sbb6t
- SHA256 6941a5420e23e7309cc09e6ffebf847a7c781dbbb726996a2b3d36340d347819
Malware Config
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
- 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: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 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\Fatura_8486472023.exe"C:\Users\Admin\AppData\Local\Temp\Fatura_8486472023.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\phqhhj.exe"C:\Users\Admin\AppData\Local\Temp\phqhhj.exe" C:\Users\Admin\AppData\Local\Temp\wlczo.xb2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\phqhhj.exe"C:\Users\Admin\AppData\Local\Temp\phqhhj.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
phqhhj.exe
phqhhj.exe
phqhhj.exe
rvewrhqjtc.ws
wlczo.xb
memory/864-139-0x0000000005D50000-0x00000000062F4000-memory.dmp
memory/864-140-0x0000000000400000-0x0000000000441000-memory.dmp
memory/864-141-0x00000000057A0000-0x0000000005806000-memory.dmp
memory/864-142-0x0000000006660000-0x00000000066F2000-memory.dmp
memory/864-143-0x0000000006630000-0x000000000663A000-memory.dmp
memory/864-144-0x00000000068C0000-0x0000000006910000-memory.dmp
memory/864-145-0x0000000006AE0000-0x0000000006CA2000-memory.dmp