Analysis
- max time kernel
132s - max time network
131s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:52
General
- Target 22cb7f51bb16772ff8e1079cb16d4775.exe
- Size 584KB
- Sample201109-ej9l1d3s4x
- SHA256 9d81a85ddc0cda68c4b9592df54155b4bf43f958cb17afa9a84c2f77bbbda0a7
Malware Config
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 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\22cb7f51bb16772ff8e1079cb16d4775.exe"C:\Users\Admin\AppData\Local\Temp\22cb7f51bb16772ff8e1079cb16d4775.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tnqrabzYJdBlFl" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA270.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\22cb7f51bb16772ff8e1079cb16d4775.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/412-9-0x000000000DA60000-0x000000000DA61000-memory.dmp
memory/412-4-0x000000000A710000-0x000000000A711000-memory.dmp
memory/412-5-0x000000000A250000-0x000000000A251000-memory.dmp
memory/412-6-0x000000000A3B0000-0x000000000A3B1000-memory.dmp
memory/412-7-0x000000000A6E0000-0x000000000A6E2000-memory.dmp
memory/412-8-0x000000000D960000-0x000000000D9BB000-memory.dmp
memory/412-0-0x0000000073AD0000-0x00000000741BE000-memory.dmp
memory/412-1-0x00000000004D0000-0x00000000004D1000-memory.dmp
memory/412-3-0x00000000071A0000-0x0000000007208000-memory.dmp
memory/2688-12-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2688-15-0x0000000073AD0000-0x00000000741BE000-memory.dmp
memory/2688-21-0x00000000059C0000-0x00000000059C1000-memory.dmp
memory/2688-22-0x0000000005E80000-0x0000000005E81000-memory.dmp
memory/2688-23-0x0000000005E60000-0x0000000005E65000-memory.dmp
memory/2688-24-0x0000000006F80000-0x0000000006F81000-memory.dmp