Analysis
- max time kernel
90s - max time network
120s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:13
General
- Target Omitted-Credentials.exe
- Size 457KB
- Sample201109-9rfdkbjpse
- SHA256 4a3fb5b5a6e2b151bd68dd6c0b8f88c7743e5cebe6437ef1a71e28de64288e1d
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.moment.net
-
Port
587
-
Username
-
Password
Spring2019@
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.moment.net
-
Port
587
-
Username
-
Password
Spring2019@
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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Omitted-Credentials.exe"C:\Users\Admin\AppData\Local\Temp\Omitted-Credentials.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OEuZhiD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB338.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Omitted-Credentials.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3136-20-0x0000000005300000-0x0000000005301000-memory.dmp
memory/3136-19-0x0000000005080000-0x0000000005081000-memory.dmp
memory/3136-14-0x0000000073920000-0x000000007400E000-memory.dmp
memory/3136-11-0x0000000000400000-0x0000000000452000-memory.dmp
memory/3980-0-0x0000000073920000-0x000000007400E000-memory.dmp
memory/3980-8-0x0000000007F30000-0x0000000007F31000-memory.dmp
memory/3980-7-0x00000000067D0000-0x0000000006823000-memory.dmp
memory/3980-6-0x0000000004E20000-0x0000000004E22000-memory.dmp
memory/3980-5-0x0000000004A90000-0x0000000004A91000-memory.dmp
memory/3980-4-0x0000000004AB0000-0x0000000004AB1000-memory.dmp
memory/3980-3-0x0000000005060000-0x0000000005061000-memory.dmp
memory/3980-1-0x00000000001F0000-0x00000000001F1000-memory.dmp