Analysis
- max time kernel
139s - max time network
19s - platform
windows7_x64 - resource
win7v200430 - submitted
24/06/2020, 13:14
Static task
static1
Behavioral task
behavioral1
Sample
Message Body.scr
Resource
win7v200430
Behavioral task
behavioral2
Sample
Message Body.scr
Resource
win10v200430
General
- Target Message Body.scr
- Size 766KB
- Sample200624-texm6edzz2
- SHA256 8470a2e93ae48abb1b987d9927277eb7a3bde99fe0d048274f839cc25aa3aa95
- MD5 6731a4126af155fb10b75962027d727c
- SHA1 721bb0f272e4bd9e4e412e5a8aa0d103093e1180
- SHA512 e5d67f34d0a4cc1f0cbcfc6fbece4118b98f54592472f4f5cb725315252e90e72a33cb59d4c195772901667bffd626f9284ddbeff9e4e58eebd02868d55029c6
- MD5 SHA1 SHA512
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.northwestpowdercoating.co.uk
-
Port
587
-
Username
-
Password
C^0z.^LxykTW
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
resource yara_rule behavioral1/memory/524-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/524-5-0x0000000000447ABE-mapping.dmp family_agenttesla behavioral1/memory/524-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/524-7-0x0000000000400000-0x000000000044C000-memory.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.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1232 set thread context of 524 1232 Message Body.scr 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 1748 schtasks.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1232 Message Body.scr 524 Message Body.scr 524 Message Body.scr - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1232 Message Body.scr Token: SeDebugPrivilege 524 Message Body.scr - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 524 Message Body.scr - Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 1232 wrote to memory of 1748 1232 Message Body.scr 26 PID 1232 wrote to memory of 1748 1232 Message Body.scr 26 PID 1232 wrote to memory of 1748 1232 Message Body.scr 26 PID 1232 wrote to memory of 1748 1232 Message Body.scr 26 PID 1232 wrote to memory of 1772 1232 Message Body.scr 28 PID 1232 wrote to memory of 1772 1232 Message Body.scr 28 PID 1232 wrote to memory of 1772 1232 Message Body.scr 28 PID 1232 wrote to memory of 1772 1232 Message Body.scr 28 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29 PID 1232 wrote to memory of 524 1232 Message Body.scr 29
Processes
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C:\Users\Admin\AppData\Local\Temp\Message Body.scr"C:\Users\Admin\AppData\Local\Temp\Message Body.scr" /S1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1232 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZXGZPpOoZnS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B25.tmp"2⤵
- Creates scheduled task(s)
PID:1748
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C:\Users\Admin\AppData\Local\Temp\Message Body.scr"{path}"2⤵PID:1772
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C:\Users\Admin\AppData\Local\Temp\Message Body.scr"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:524
-