Analysis
- max time kernel
119s - max time network
111s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:55
General
- Target PO No SCI6533155 SZ Quote ID SZ-761100-44.exe
- Size 432KB
- Sample201109-talezndame
- SHA256 cb7d8b2d1f4a601cb1049096cddaa18bac0efb2b956f9e1b98276be2618fcaf5
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
Cotton2019*
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 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PO No SCI6533155 SZ Quote ID SZ-761100-44.exe"C:\Users\Admin\AppData\Local\Temp\PO No SCI6533155 SZ Quote ID SZ-761100-44.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PDuchogdUDDR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp560.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\PO No SCI6533155 SZ Quote ID SZ-761100-44.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2604-5-0x0000000005590000-0x0000000005591000-memory.dmp
memory/2604-3-0x0000000005A40000-0x0000000005A41000-memory.dmp
memory/2604-0-0x0000000073940000-0x000000007402E000-memory.dmp
memory/2604-6-0x0000000005920000-0x0000000005922000-memory.dmp
memory/2604-7-0x0000000008CB0000-0x0000000008D02000-memory.dmp
memory/2604-8-0x0000000008DB0000-0x0000000008DB1000-memory.dmp
memory/2604-1-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
memory/2604-4-0x00000000055E0000-0x00000000055E1000-memory.dmp
memory/3532-11-0x0000000000400000-0x0000000000450000-memory.dmp
memory/3532-14-0x0000000073940000-0x000000007402E000-memory.dmp
memory/3532-19-0x00000000029C0000-0x00000000029C1000-memory.dmp
memory/3532-20-0x0000000005E00000-0x0000000005E01000-memory.dmp