Analysis
- max time kernel
92s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
08/12/2022, 08:51
General
- Target New_PO #1783919939-12-2022 RFQ Amended.exe
- Size 880KB
- Sample221208-kr54dscd6t
- SHA256 66e8893d8742feb4cf59cba5705d0ed26ec79f7287c873e56b4216b71903af81
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.tegzw-com.cf
-
Port
587
-
Username
-
Password
k6C[HUoih&9&
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\New_PO #1783919939-12-2022 RFQ Amended.exe"C:\Users\Admin\AppData\Local\Temp\New_PO #1783919939-12-2022 RFQ Amended.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\glzaui" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC8FD.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\New_PO #1783919939-12-2022 RFQ Amended.exe"{path}"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\New_PO #1783919939-12-2022 RFQ Amended.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
New_PO #1783919939-12-2022 RFQ Amended.exe.log
tmpC8FD.tmp
memory/4020-141-0x0000000000400000-0x000000000042E000-memory.dmp
memory/4020-143-0x00000000055E0000-0x0000000005646000-memory.dmp
memory/4020-144-0x00000000069F0000-0x0000000006A40000-memory.dmp
memory/4820-136-0x0000000005390000-0x000000000539A000-memory.dmp
memory/4820-135-0x0000000005450000-0x00000000054EC000-memory.dmp
memory/4820-134-0x00000000052E0000-0x0000000005372000-memory.dmp
memory/4820-132-0x0000000000870000-0x0000000000952000-memory.dmp
memory/4820-133-0x0000000005960000-0x0000000005F04000-memory.dmp