Analysis
- max time kernel
149s - max time network
147s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 20:13
General
- Target Omitted-Credentials.exe
- Size 457KB
- Sample201109-9rfdkbjpse
- SHA256 4a3fb5b5a6e2b151bd68dd6c0b8f88c7743e5cebe6437ef1a71e28de64288e1d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.moment.net
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Port
587
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Username
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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 4 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 17 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
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OEuZhiD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp12B6.tmp"2⤵
- Creates scheduled task(s)
-
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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/1056-0-0x00000000745B0000-0x0000000074C9E000-memory.dmp
memory/1056-1-0x0000000000890000-0x0000000000891000-memory.dmp
memory/1056-3-0x00000000004F0000-0x00000000004F2000-memory.dmp
memory/1056-4-0x0000000002080000-0x00000000020D3000-memory.dmp
memory/1500-7-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1500-9-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1500-10-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1500-11-0x00000000745B0000-0x0000000074C9E000-memory.dmp