Analysis
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max time kernel
125s -
max time network
143s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
22-10-2021 07:44
Static task
static1
Behavioral task
behavioral1
Sample
PO.8956.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
PO.8956.exe
Resource
win10-en-20211014
General
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Target
PO.8956.exe
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Size
843KB
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MD5
8d6bf73a7448adf11ca5f2cf766a9898
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SHA1
6c157b632a674b4d257d8bcf0fbc4f827a3861fc
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SHA256
71e6a270b356bc75968b35c54dc53c7b0ce03519e8fbd1821814438810b84e51
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SHA512
ba9b60b0e4d4a1aa42c81e11a2e9c046c664f3447d34b846356d8ca692972ac6285c721fc401816686c720ec6ad26425f8820c45e94712ea2c35d6e32cac1f5d
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.gmail.com - Port:
587 - Username:
ku0385547@gmail.com - Password:
iambless@070
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1144-66-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1144-65-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1144-68-0x00000000004374AE-mapping.dmp family_agenttesla behavioral1/memory/1144-67-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1144-69-0x0000000000400000-0x000000000043C000-memory.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:
PO.8956.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion PO.8956.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion PO.8956.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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
PO.8956.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.8956.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.8956.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.8956.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
PO.8956.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\Appdata = "C:\\Users\\Admin\\AppData\\Roaming\\Appdata\\Appdata.exe" PO.8956.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
PO.8956.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum PO.8956.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 PO.8956.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO.8956.exedescription pid process target process PID 1776 set thread context of 1144 1776 PO.8956.exe PO.8956.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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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
PO.8956.exePO.8956.exepid process 1776 PO.8956.exe 1144 PO.8956.exe 1144 PO.8956.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
PO.8956.exePO.8956.exedescription pid process Token: SeDebugPrivilege 1776 PO.8956.exe Token: SeDebugPrivilege 1144 PO.8956.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
PO.8956.exepid process 1144 PO.8956.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
PO.8956.exedescription pid process target process PID 1776 wrote to memory of 1964 1776 PO.8956.exe schtasks.exe PID 1776 wrote to memory of 1964 1776 PO.8956.exe schtasks.exe PID 1776 wrote to memory of 1964 1776 PO.8956.exe schtasks.exe PID 1776 wrote to memory of 1964 1776 PO.8956.exe schtasks.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe PID 1776 wrote to memory of 1144 1776 PO.8956.exe PO.8956.exe -
outlook_office_path 1 IoCs
Processes:
PO.8956.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.8956.exe -
outlook_win_path 1 IoCs
Processes:
PO.8956.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.8956.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO.8956.exe"C:\Users\Admin\AppData\Local\Temp\PO.8956.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
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tqeDbDmyWYKl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7D0C.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\PO.8956.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp7D0C.tmpMD5
cf8505803cc4f6150be88aa7b8353b40
SHA1031e1f6d03ee3f4fc5d5ce8189d833dae2ef0bef
SHA2562ce8fc2883c8d51bdd54eebe101e27eade902b9730aa5e71e460c44363432a19
SHA512e3b2d2af9913ff4e5b4023e4b1ef075c7b03ec760538eb7ba09761206b1178911d94a5c4fe49a9ab6058069ed54a3e7e0336f7799bf201c16ccc4b936c530ea2
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memory/1144-68-0x00000000004374AE-mapping.dmp
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memory/1144-65-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1144-72-0x00000000005B1000-0x00000000005B2000-memory.dmpFilesize
4KB
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memory/1144-71-0x00000000005B0000-0x00000000005B1000-memory.dmpFilesize
4KB
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memory/1144-64-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1144-69-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1144-67-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1144-63-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1144-66-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1776-60-0x0000000000C90000-0x0000000000CC8000-memory.dmpFilesize
224KB
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memory/1776-56-0x0000000076961000-0x0000000076963000-memory.dmpFilesize
8KB
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memory/1776-54-0x0000000000EC0000-0x0000000000EC1000-memory.dmpFilesize
4KB
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memory/1776-57-0x0000000000490000-0x000000000049E000-memory.dmpFilesize
56KB
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memory/1776-59-0x0000000005100000-0x000000000517D000-memory.dmpFilesize
500KB
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memory/1776-58-0x0000000004CE0000-0x0000000004CE1000-memory.dmpFilesize
4KB
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memory/1964-61-0x0000000000000000-mapping.dmp