Analysis
- max time kernel
140s - max time network
25s - platform
windows7_x64 - resource
win7v200430 - submitted
02/07/2020, 13:26
Static task
static1
Behavioral task
behavioral1
Sample
SOA.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
SOA.exe
Resource
win10
General
- Target SOA.exe
- Size 394KB
- Sample200702-eevbwlvtpn
- SHA256 1b69bce4e5b7966a2bdc844ac33899746692b7fef019019c08986f295eb7d001
- MD5 fa27473a151b9bd5302c23bfab809b7f
- SHA1 65ed59245eb03563745b3508afb7b142221bacac
- SHA512 8845edd5fd6a82f05bce1df6c76d69a6b7ae127932cde8849e720d48b4f7e4fc1cf9abaac729f10cb7f2821ab5ba491a7ae8f0f28a18625751e26dcb9fba880c
- MD5 SHA1 SHA512
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.actionassist.co.uk
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Port
587
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Username
-
Password
benjamin76
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
resource yara_rule behavioral1/memory/1176-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1176-5-0x0000000000447F0E-mapping.dmp family_agenttesla behavioral1/memory/1176-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1176-7-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla - Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion SOA.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion SOA.exe - 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.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum SOA.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 SOA.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1360 set thread context of 1176 1360 SOA.exe 29 - 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 368 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1176 SOA.exe 1176 SOA.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1176 SOA.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1176 SOA.exe - Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1360 wrote to memory of 368 1360 SOA.exe 27 PID 1360 wrote to memory of 368 1360 SOA.exe 27 PID 1360 wrote to memory of 368 1360 SOA.exe 27 PID 1360 wrote to memory of 368 1360 SOA.exe 27 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29 PID 1360 wrote to memory of 1176 1360 SOA.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\SOA.exe"C:\Users\Admin\AppData\Local\Temp\SOA.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1360 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\spolFYTfOzDc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE82.tmp"2⤵
- Creates scheduled task(s)
PID:368
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C:\Users\Admin\AppData\Local\Temp\SOA.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1176
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