Analysis
- max time kernel
101s - max time network
97s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:11
General
- Target Payment Advice.bat.exe
- Size 398KB
- Sample201109-pkv5lrecf2
- SHA256 a4a97ffddcc1f86ee8d3c45421375fb560f3b9aa9428cc3079cffc1edf930d0d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
smtp.ahrass.com
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Port
587
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Username
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Password
chukwuma22
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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Payment Advice.bat.exe"C:\Users\Admin\AppData\Local\Temp\Payment Advice.bat.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZCaWnB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2897.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Payment Advice.bat.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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
Loading Replay Monitor...
Downloads
memory/360-19-0x0000000005CE0000-0x0000000005CE1000-memory.dmp
memory/360-18-0x0000000005230000-0x0000000005231000-memory.dmp
memory/360-13-0x0000000073550000-0x0000000073C3E000-memory.dmp
memory/360-11-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1400-5-0x00000000058D0000-0x00000000058D1000-memory.dmp
memory/1400-8-0x0000000007DF0000-0x0000000007E43000-memory.dmp
memory/1400-7-0x0000000007C00000-0x0000000007C02000-memory.dmp
memory/1400-6-0x0000000007C10000-0x0000000007C11000-memory.dmp
memory/1400-0-0x0000000073550000-0x0000000073C3E000-memory.dmp
memory/1400-4-0x0000000005520000-0x0000000005521000-memory.dmp
memory/1400-3-0x0000000005940000-0x0000000005941000-memory.dmp
memory/1400-1-0x0000000000B30000-0x0000000000B31000-memory.dmp