Analysis
- max time kernel
108s - max time network
113s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:02
General
- Target vrJxPqdgrMT1Sag.exe
- Size 549KB
- Sample201109-74mekxdree
- SHA256 1ac8ec4b4bb485f52aa1240f26d708c001fb74fd46b2291ba3fa858ff0b4abae
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.islandkingpools.com
-
Port
587
-
Username
-
Password
Accounts$678
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 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.
- Modifies registry key 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\vrJxPqdgrMT1Sag.exe"C:\Users\Admin\AppData\Local\Temp\vrJxPqdgrMT1Sag.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\hlQSchz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F9E.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\vrJxPqdgrMT1Sag.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\vrJxPqdgrMT1Sag.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
-
-
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/428-11-0x0000000009A90000-0x0000000009A91000-memory.dmp
memory/428-4-0x0000000009C50000-0x0000000009C51000-memory.dmp
memory/428-5-0x0000000005470000-0x0000000005471000-memory.dmp
memory/428-8-0x00000000053E0000-0x00000000053E1000-memory.dmp
memory/428-9-0x0000000006240000-0x0000000006242000-memory.dmp
memory/428-10-0x0000000009990000-0x00000000099E3000-memory.dmp
memory/428-0-0x0000000073160000-0x000000007384E000-memory.dmp
memory/428-1-0x0000000000A00000-0x0000000000A01000-memory.dmp
memory/428-3-0x0000000002DB0000-0x0000000002E0F000-memory.dmp
memory/1520-14-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1520-17-0x0000000073160000-0x000000007384E000-memory.dmp
memory/1520-22-0x00000000051A0000-0x00000000051A1000-memory.dmp
memory/1520-23-0x0000000005D70000-0x0000000005D71000-memory.dmp