Analysis
- max time kernel
148s - max time network
110s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 21:00
Static task
static1
Behavioral task
behavioral1
Sample
Bank Payment Slip6192020.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
Bank Payment Slip6192020.exe
Resource
win10v20201028
General
- Target Bank Payment Slip6192020.exe
- Size 467KB
- Sample201109-avnmdfhtbs
- SHA256 a9315a98562f1a328bb067ad4c9633a90f327a987f3f08d5ca6d57f3f5e36c8d
- MD5 5c258ea6a2ac053472a9c08d1eb89254
- SHA1 1893f2e52e2f2269ac66a2926e9d94a21b24a4f7
- SHA512 b1e5cd244544f80ee45db8716887ecdba8cf236d1df2d114c895f665e6f8d341b102c68265af575207fcbd5055243d6b33b566998f3248cd77651beb8e894f82
- MD5 SHA1 SHA512
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.bnb-spa.com
-
Port
587
-
Username
-
Password
tPo!47:glt$E
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.bnb-spa.com
-
Port
587
-
Username
-
Password
tPo!47:glt$E
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
resource yara_rule behavioral2/memory/2244-2-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral2/memory/2244-3-0x000000000044C47E-mapping.dmp family_agenttesla - 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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mymp4 = "C:\\Users\\Admin\\AppData\\Roaming\\Mymp4\\Mymp4.exe" Bank Payment Slip6192020.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 580 set thread context of 2244 580 Bank Payment Slip6192020.exe 80 - 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.
pid Process 3176 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2244 Bank Payment Slip6192020.exe 2244 Bank Payment Slip6192020.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2244 Bank Payment Slip6192020.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2244 Bank Payment Slip6192020.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 580 wrote to memory of 3176 580 Bank Payment Slip6192020.exe 78 PID 580 wrote to memory of 3176 580 Bank Payment Slip6192020.exe 78 PID 580 wrote to memory of 3176 580 Bank Payment Slip6192020.exe 78 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80 PID 580 wrote to memory of 2244 580 Bank Payment Slip6192020.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\Bank Payment Slip6192020.exe"C:\Users\Admin\AppData\Local\Temp\Bank Payment Slip6192020.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:580 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gPRzwLaSaej" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F21.tmp"2⤵
- Creates scheduled task(s)
PID:3176
-
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C:\Users\Admin\AppData\Local\Temp\Bank Payment Slip6192020.exe"{path}"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2244
-