Analysis
- max time kernel
136s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
12/01/2023, 19:13
General
- Target 0a232eac16fadbcea9f371d5f3832d808123297a.exe
- Size 440KB
- Sample230112-xw2b8ade5t
- SHA256 72d186da41f7d6979ff9b012e4e5b5581da86946d60ffbc5870cc7b99dce192a
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
- 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 WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\0a232eac16fadbcea9f371d5f3832d808123297a.exe"C:\Users\Admin\AppData\Local\Temp\0a232eac16fadbcea9f371d5f3832d808123297a.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\yfrwobsza.exe"C:\Users\Admin\AppData\Local\Temp\yfrwobsza.exe" C:\Users\Admin\AppData\Local\Temp\boxgr.nzz2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\yfrwobsza.exe"C:\Users\Admin\AppData\Local\Temp\yfrwobsza.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- 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
boxgr.nzz
yfrwobsza.exe
yfrwobsza.exe
yfrwobsza.exe
zwqqwu.fx
memory/4160-139-0x0000000000400000-0x000000000043F000-memory.dmp
memory/4160-140-0x0000000004950000-0x0000000004EF4000-memory.dmp
memory/4160-141-0x0000000004F80000-0x000000000501C000-memory.dmp
memory/4160-142-0x00000000056E0000-0x0000000005746000-memory.dmp
memory/4160-143-0x0000000005CB0000-0x0000000005D42000-memory.dmp
memory/4160-144-0x0000000006190000-0x000000000619A000-memory.dmp
memory/4160-145-0x00000000062C0000-0x0000000006310000-memory.dmp