Resubmissions
01-12-2020 15:01
201201-3yr3d6cakn 10Analysis
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max time kernel
110s -
max time network
102s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
01-12-2020 15:01
Static task
static1
Behavioral task
behavioral1
Sample
Payment.exe
Resource
win7v20201028
General
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Target
Payment.exe
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Size
1.0MB
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MD5
6b30bab8e1f4ff60acca54a249517bd5
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SHA1
4a934e2daf22ee33f1aea1cd49cdd294986efc16
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SHA256
bd648199b17ff21db3d45cfd10eb3b70fdcbdf42c405061025de6cd1a59c212e
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SHA512
6ab09364ace6407d9cd139e1f564f6d38134a13d0b7281aeca74e8d3f1a76199a794c248c1ef7a5ded326765cac7f4b94d0bba484b76f33457db49a620852ac7
Malware Config
Extracted
Protocol: smtp- Host:
smtp.shirdilog.com - Port:
587 - Username:
[email protected] - Password:
SL094521
Extracted
agenttesla
Protocol: smtp- Host:
smtp.shirdilog.com - Port:
587 - Username:
[email protected] - Password:
SL094521
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/1316-15-0x0000000000400000-0x0000000000466000-memory.dmp family_agenttesla behavioral2/memory/1316-16-0x00000000004612BE-mapping.dmp family_agenttesla -
Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
Payment.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Payment.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Payment.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
Payment.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum Payment.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0 Payment.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Payment.exedescription pid process target process PID 4760 set thread context of 1316 4760 Payment.exe Payment.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
Payment.exePayment.exepid process 4760 Payment.exe 1316 Payment.exe 1316 Payment.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Payment.exePayment.exedescription pid process Token: SeDebugPrivilege 4760 Payment.exe Token: SeDebugPrivilege 1316 Payment.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Payment.exepid process 1316 Payment.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
Payment.exePayment.exedescription pid process target process PID 4760 wrote to memory of 1048 4760 Payment.exe schtasks.exe PID 4760 wrote to memory of 1048 4760 Payment.exe schtasks.exe PID 4760 wrote to memory of 1048 4760 Payment.exe schtasks.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 4760 wrote to memory of 1316 4760 Payment.exe Payment.exe PID 1316 wrote to memory of 2264 1316 Payment.exe REG.exe PID 1316 wrote to memory of 2264 1316 Payment.exe REG.exe PID 1316 wrote to memory of 2264 1316 Payment.exe REG.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Payment.exe"C:\Users\Admin\AppData\Local\Temp\Payment.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gnFZsnV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp39DD.tmp"2⤵
- Creates scheduled task(s)
PID:1048
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C:\Users\Admin\AppData\Local\Temp\Payment.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1316 -
C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer / v NoRun / t REG_DWORD / d 1 / f3⤵
- Modifies registry key
PID:2264
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
8cef52dc593c4a586b678d9a84ab0234
SHA120cdb2fb2875c337b300de17b079ed08e92f5afe
SHA256fdfa473c07fa508a6240f4b8072b644a0c0491a862391575da61084809285e0e
SHA51221714042d2b45418b932e62cdd0cd5fb1dfee35c28f5a4405df5cc2a2ec577bbc3d7b2d80883648b1aa0ffaf5b37a71570333c87bd1b29729e087ddb8d01e1c4