Analysis
- max time kernel
89s - max time network
123s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:38
General
- Target Scan001#pdf.exe
- Size 424KB
- Sample201109-8jsgmxb35a
- SHA256 2e8f8383cfdb7a42c9e5ced3469619f6154b874616a2dd793693f3b53ec5cae7
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
999999xxxsss011x1
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 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.
- 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Scan001#pdf.exe"C:\Users\Admin\AppData\Local\Temp\Scan001#pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qOvPZwi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBF6D.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Scan001#pdf.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3552-19-0x0000000006420000-0x0000000006421000-memory.dmp
memory/3552-18-0x0000000005880000-0x0000000005881000-memory.dmp
memory/3552-13-0x0000000073920000-0x000000007400E000-memory.dmp
memory/3552-11-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3564-4-0x0000000004D80000-0x0000000004D81000-memory.dmp
memory/3564-8-0x00000000083A0000-0x00000000083EE000-memory.dmp
memory/3564-7-0x0000000006C90000-0x0000000006C91000-memory.dmp
memory/3564-6-0x0000000005270000-0x0000000005272000-memory.dmp
memory/3564-5-0x0000000004CC0000-0x0000000004CC1000-memory.dmp
memory/3564-0-0x0000000073920000-0x000000007400E000-memory.dmp
memory/3564-3-0x0000000005280000-0x0000000005281000-memory.dmp
memory/3564-1-0x0000000000430000-0x0000000000431000-memory.dmp