Analysis
- max time kernel
148s - max time network
147s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/12/2020, 10:18
General
- Target 4281ca32097171a4055f4bbff1ab433a.exe
- Size 986KB
- Sample201209-3rdj8z77nn
- SHA256 f8b957b53da50425dfd655553ad255dd26e307971d477edd441ae2c2248ff121
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
ANYANWU3116
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- 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.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4281ca32097171a4055f4bbff1ab433a.exe"C:\Users\Admin\AppData\Local\Temp\4281ca32097171a4055f4bbff1ab433a.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\HzveCEzkA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp205A.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\4281ca32097171a4055f4bbff1ab433a.exe"C:\Users\Admin\AppData\Local\Temp\4281ca32097171a4055f4bbff1ab433a.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/756-7-0x00000000057C0000-0x00000000057C1000-memory.dmp
memory/756-3-0x0000000000D40000-0x0000000000D41000-memory.dmp
memory/756-2-0x00000000739A0000-0x000000007408E000-memory.dmp
memory/756-8-0x00000000056F0000-0x00000000056F1000-memory.dmp
memory/756-9-0x0000000005860000-0x0000000005861000-memory.dmp
memory/756-10-0x0000000026B00000-0x0000000046AE8000-memory.dmp
memory/756-11-0x0000000046FB0000-0x0000000047043000-memory.dmp
memory/756-12-0x0000000005BF0000-0x0000000005BF8000-memory.dmp
memory/756-14-0x00000000471A0000-0x0000000047216000-memory.dmp
memory/756-6-0x0000000005C20000-0x0000000005C21000-memory.dmp
memory/756-5-0x0000000005640000-0x0000000005641000-memory.dmp
memory/1608-17-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1608-20-0x00000000739A0000-0x000000007408E000-memory.dmp
memory/1608-25-0x0000000005570000-0x0000000005571000-memory.dmp
memory/1608-26-0x0000000005C40000-0x0000000005C41000-memory.dmp