Analysis
- max time kernel
42s - max time network
69s - platform
windows10_x64 - resource
win10 - submitted
02/10/2020, 08:08
General
- Target 58e919965df896c5650448556e2a6d96ecc92a8f2af4dbdf81f4a86c2df5a091.exe
- Size 55KB
- Sample201002-5mcyvdrey6
- SHA256 58e919965df896c5650448556e2a6d96ecc92a8f2af4dbdf81f4a86c2df5a091
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.stevenlkornsteinlawfirm.com
-
Port
587
-
Username
-
Password
T:gr:A2t{7ai
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.
- Adds Run key to start application 2 TTPs 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 19 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\58e919965df896c5650448556e2a6d96ecc92a8f2af4dbdf81f4a86c2df5a091.exe"C:\Users\Admin\AppData\Local\Temp\58e919965df896c5650448556e2a6d96ecc92a8f2af4dbdf81f4a86c2df5a091.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 42⤵
- Delays execution with timeout.exe
-
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C:\Users\Admin\AppData\Local\Temp\58e919965df896c5650448556e2a6d96ecc92a8f2af4dbdf81f4a86c2df5a091.exe"C:\Users\Admin\AppData\Local\Temp\58e919965df896c5650448556e2a6d96ecc92a8f2af4dbdf81f4a86c2df5a091.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 17002⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/364-0-0x0000000073670000-0x0000000073D5E000-memory.dmp
memory/364-1-0x00000000008B0000-0x00000000008B1000-memory.dmp
memory/364-2-0x0000000005100000-0x0000000005101000-memory.dmp
memory/364-4-0x0000000005AC0000-0x0000000005AFF000-memory.dmp
memory/364-5-0x0000000006000000-0x0000000006001000-memory.dmp
memory/2148-6-0x0000000000400000-0x0000000000436000-memory.dmp
memory/2148-8-0x0000000073670000-0x0000000073D5E000-memory.dmp
memory/2148-14-0x0000000005960000-0x0000000005961000-memory.dmp
memory/2148-16-0x0000000006110000-0x0000000006111000-memory.dmp
memory/2148-17-0x0000000006890000-0x0000000006891000-memory.dmp
memory/2148-18-0x0000000006840000-0x0000000006841000-memory.dmp
memory/2884-13-0x00000000041C0000-0x00000000041C1000-memory.dmp
memory/2884-15-0x0000000004680000-0x0000000004681000-memory.dmp