Analysis
- max time kernel
58s - max time network
102s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:20
General
- Target RFQ12ZAI_pdf.scr
- Size 860KB
- Sample201109-673jwe7cfe
- SHA256 3608788a7ca7ee88aa507cc28e1a5cf3d4c49dae62ba14933085fa7197ae7841
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- AgentTesla Payload 1 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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.
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RFQ12ZAI_pdf.scr"C:\Users\Admin\AppData\Local\Temp\RFQ12ZAI_pdf.scr" /S1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KXyqBrloW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp78B0.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile2⤵
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1144-4-0x0000000001180000-0x0000000001182000-memory.dmp
memory/1144-12-0x00000000069F0000-0x00000000069F1000-memory.dmp
memory/1144-0-0x0000000073CB0000-0x000000007439E000-memory.dmp
memory/1144-5-0x00000000052C0000-0x00000000052C1000-memory.dmp
memory/1144-6-0x0000000005640000-0x0000000005692000-memory.dmp
memory/1144-7-0x0000000005740000-0x0000000005741000-memory.dmp
memory/1144-8-0x0000000005CE0000-0x0000000005CE1000-memory.dmp
memory/1144-15-0x0000000006690000-0x0000000006691000-memory.dmp
memory/1144-1-0x00000000007A0000-0x00000000007A1000-memory.dmp
memory/1144-11-0x00000000067A0000-0x00000000067EB000-memory.dmp
memory/1144-3-0x0000000002E70000-0x0000000002ECE000-memory.dmp
memory/1144-13-0x0000000006A90000-0x0000000006A91000-memory.dmp