Analysis
- max time kernel
133s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20230831-en - resource tags
- submitted
05/09/2023, 11:42
General
- Target z6CurriculumVitae.exe
- Size 618KB
- Sample230905-nt141afb5v
- SHA256 345d2a727604ae1ed012e5d822356d0ed11dc3d5a5e37e55b44cd3592c1b93f8
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
smtp.kiequiprosmedicos.com
-
Port
587
-
Username
-
Password
HGFTYJJ543
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
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C:\Users\Admin\AppData\Local\Temp\z6CurriculumVitae.exe"C:\Users\Admin\AppData\Local\Temp\z6CurriculumVitae.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\z6CurriculumVitae.exe"C:\Users\Admin\AppData\Local\Temp\z6CurriculumVitae.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\z6CurriculumVitae.exe"C:\Users\Admin\AppData\Local\Temp\z6CurriculumVitae.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
z6CurriculumVitae.exe.log
memory/2208-15-0x0000000007A50000-0x0000000007AEC000-memory.dmp
memory/2208-2-0x0000000000390000-0x0000000000430000-memory.dmp
memory/2208-4-0x0000000004DE0000-0x0000000004E72000-memory.dmp
memory/2208-11-0x0000000004FD0000-0x0000000004FE0000-memory.dmp
memory/2208-12-0x0000000004F80000-0x0000000004F8A000-memory.dmp
memory/2208-13-0x0000000075140000-0x00000000758F0000-memory.dmp
memory/2208-14-0x0000000004FD0000-0x0000000004FE0000-memory.dmp
memory/2208-1-0x0000000075140000-0x00000000758F0000-memory.dmp
memory/2208-3-0x00000000052B0000-0x0000000005854000-memory.dmp
memory/2208-21-0x0000000075140000-0x00000000758F0000-memory.dmp
memory/3572-16-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3572-20-0x0000000005530000-0x0000000005540000-memory.dmp
memory/3572-19-0x0000000075140000-0x00000000758F0000-memory.dmp
memory/3572-22-0x00000000057D0000-0x0000000005836000-memory.dmp
memory/3572-23-0x0000000006CE0000-0x0000000006D30000-memory.dmp
memory/3572-24-0x0000000075140000-0x00000000758F0000-memory.dmp
memory/3572-25-0x0000000005530000-0x0000000005540000-memory.dmp