Analysis
- max time kernel
141s - max time network
33s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
28/02/2023, 08:24
General
- Target e-dekont20230228_061814_000076.exe
- Size 501KB
- Sample230228-karvfaad62
- SHA256 3672a8eb0dd83a097ffd82461ba28956fba31e179c80f3744bcdbd52a5b77121
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot6277254729:AAH9hHYZNSDZac0nNvgmchkZF8WVRKU5dJ0/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 3 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 9 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e-dekont20230228_061814_000076.exe"C:\Users\Admin\AppData\Local\Temp\e-dekont20230228_061814_000076.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\wvaeo.exe"C:\Users\Admin\AppData\Local\Temp\wvaeo.exe" C:\Users\Admin\AppData\Local\Temp\eqkvoe.okh2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\wvaeo.exe"C:\Users\Admin\AppData\Local\Temp\wvaeo.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
eqkvoe.okh
llcbzx.rl
wvaeo.exe
wvaeo.exe
wvaeo.exe
wvaeo.exe
wvaeo.exe
wvaeo.exe
wvaeo.exe
memory/1280-70-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1280-74-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1280-75-0x0000000001E60000-0x0000000001E90000-memory.dmp
memory/1280-76-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1280-77-0x00000000044F0000-0x0000000004530000-memory.dmp