Analysis
- max time kernel
142s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
18/02/2022, 15:23
General
- Target BL and Packing list & invoice.exe
- Size 781KB
- Sample220218-ssgfescfe2
- SHA256 6ffc8cbbd4335b8ee1487f406295eac8080bf080e0e266743166adc79a9f1950
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.butterflymotors.com
-
Port
587
-
Username
-
Password
#ifO^N=vn2j{
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 IoCs
- Drops file in Drivers directory 1 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
- Drops file in Windows directory 6 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\BL and Packing list & invoice.exe"C:\Users\Admin\AppData\Local\Temp\BL and Packing list & invoice.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\BL and Packing list & invoice.exe"C:\Users\Admin\AppData\Local\Temp\BL and Packing list & invoice.exe"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1180-134-0x0000023C22D60000-0x0000023C22D70000-memory.dmp
memory/1180-136-0x0000023C259D0000-0x0000023C259D4000-memory.dmp
memory/1180-135-0x0000023C23320000-0x0000023C23330000-memory.dmp
memory/4112-138-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4112-140-0x00000000051F0000-0x0000000005794000-memory.dmp
memory/4112-141-0x0000000074B7E000-0x0000000074B7F000-memory.dmp
memory/4112-142-0x0000000004C90000-0x0000000004C91000-memory.dmp
memory/4112-143-0x0000000005B50000-0x0000000005BB6000-memory.dmp
memory/4112-144-0x0000000005CC0000-0x0000000005D10000-memory.dmp
memory/4112-145-0x0000000005DB0000-0x0000000005DBA000-memory.dmp
memory/4112-146-0x0000000004C91000-0x0000000004C92000-memory.dmp
memory/4164-133-0x00000000059E0000-0x0000000005A72000-memory.dmp
memory/4164-132-0x0000000005870000-0x0000000005871000-memory.dmp
memory/4164-137-0x0000000005D20000-0x0000000005DBC000-memory.dmp
memory/4164-130-0x0000000074B7E000-0x0000000074B7F000-memory.dmp
memory/4164-131-0x0000000000DF0000-0x0000000000EBA000-memory.dmp