Analysis
- max time kernel
102s - max time network
102s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:09
General
- Target Order_4488577_list.doc.exe
- Size 505KB
- Sample201109-nyyref2cjs
- SHA256 e2ee107b59612c9ca7bc1df9d460f3c7205503aaa92346bcab201cb7c153f25a
Malware Config
Extracted
-
Protocol
smtp
-
Host
premium57.web-hosting.com
-
Port
587
-
Username
-
Password
Goodboy123??
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
premium57.web-hosting.com
-
Port
587
-
Username
-
Password
Goodboy123??
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 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\Order_4488577_list.doc.exe"C:\Users\Admin\AppData\Local\Temp\Order_4488577_list.doc.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\PmSXUseCoPGm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB646.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Order_4488577_list.doc.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/1400-4-0x00000000078C0000-0x00000000078C1000-memory.dmp
memory/1400-0-0x0000000073550000-0x0000000073C3E000-memory.dmp
memory/1400-5-0x0000000007970000-0x0000000007971000-memory.dmp
memory/1400-6-0x000000000AED0000-0x000000000AED2000-memory.dmp
memory/1400-7-0x000000000B110000-0x000000000B162000-memory.dmp
memory/1400-8-0x000000000B230000-0x000000000B231000-memory.dmp
memory/1400-3-0x0000000007CE0000-0x0000000007CE1000-memory.dmp
memory/1400-1-0x0000000000B30000-0x0000000000B31000-memory.dmp
memory/2264-11-0x0000000000400000-0x0000000000450000-memory.dmp
memory/2264-13-0x0000000073550000-0x0000000073C3E000-memory.dmp
memory/2264-18-0x00000000055B0000-0x00000000055B1000-memory.dmp
memory/2264-19-0x00000000060D0000-0x00000000060D1000-memory.dmp