Analysis
- max time kernel
137s - max time network
112s - platform
windows10_x64 - resource
win10v200722 - submitted
05/10/2020, 14:29
General
- Target e3937ccb5d824eeed1726e1484751967.exe
- Size 471KB
- Sample201005-nwms92z89a
- SHA256 4a60edca3a6f3900a39b164d5894137e4e466bae90a5287ccd9eebb4482b2686
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
opjis0123
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 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.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e3937ccb5d824eeed1726e1484751967.exe"C:\Users\Admin\AppData\Local\Temp\e3937ccb5d824eeed1726e1484751967.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3056-1-0x0000000000A90000-0x0000000000A91000-memory.dmp
memory/3056-3-0x0000000005250000-0x0000000005275000-memory.dmp
memory/3056-4-0x00000000058D0000-0x00000000058D1000-memory.dmp
memory/3056-5-0x0000000005360000-0x0000000005361000-memory.dmp
memory/3056-6-0x0000000005470000-0x0000000005471000-memory.dmp
memory/3056-8-0x00000000061D0000-0x00000000061D6000-memory.dmp
memory/3056-0-0x00000000738E0000-0x0000000073FCE000-memory.dmp
memory/3628-13-0x00000000738E0000-0x0000000073FCE000-memory.dmp
memory/3628-14-0x0000000000700000-0x000000000073C000-memory.dmp
memory/3628-17-0x0000000004D40000-0x0000000004D41000-memory.dmp
memory/3628-18-0x0000000004CF0000-0x0000000004CF1000-memory.dmp
memory/3628-19-0x0000000005890000-0x0000000005891000-memory.dmp
memory/3628-21-0x0000000005CB0000-0x0000000005CB1000-memory.dmp