Analysis
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max time kernel
146s -
max time network
180s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 10:52
Static task
static1
Behavioral task
behavioral1
Sample
PO983627289.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
PO983627289.exe
Resource
win10v2004-20220414-en
General
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Target
PO983627289.exe
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Size
837KB
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MD5
c9ddd7789409993921f935f42e7fcf1a
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SHA1
cd5e920aa114733fe22005fdb282c048d6fa6a75
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SHA256
fce56056a7028ed4787e39d614c90e84804ad0dc03185a6532834564b10b7d5a
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SHA512
e47730702a08704dd9fa2abeed91bdfa8b197c4c7754e1c0af3322c332e4bc82990193d90f6a81cf49d73f9ffd899119c22b2570beab86beddd06389dd3f5447
Malware Config
Extracted
Protocol: smtp- Host:
smtp.urban.co.th - Port:
587 - Username:
[email protected] - Password:
Urban@1143
Signatures
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NirSoft MailPassView 8 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/1548-132-0x0000000000AD0000-0x0000000000B58000-memory.dmp MailPassView behavioral2/memory/1548-133-0x0000000000AD0000-0x0000000000B58000-memory.dmp MailPassView behavioral2/memory/2684-140-0x0000000000A10000-0x0000000000A98000-memory.dmp MailPassView behavioral2/memory/2684-141-0x0000000000A10000-0x0000000000A98000-memory.dmp MailPassView behavioral2/memory/3528-145-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/3528-146-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/3528-148-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/3528-149-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 8 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/1548-132-0x0000000000AD0000-0x0000000000B58000-memory.dmp WebBrowserPassView behavioral2/memory/1548-133-0x0000000000AD0000-0x0000000000B58000-memory.dmp WebBrowserPassView behavioral2/memory/2684-140-0x0000000000A10000-0x0000000000A98000-memory.dmp WebBrowserPassView behavioral2/memory/2684-141-0x0000000000A10000-0x0000000000A98000-memory.dmp WebBrowserPassView behavioral2/memory/3232-150-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/3232-151-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3232-153-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3232-154-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 12 IoCs
Processes:
resource yara_rule behavioral2/memory/1548-132-0x0000000000AD0000-0x0000000000B58000-memory.dmp Nirsoft behavioral2/memory/1548-133-0x0000000000AD0000-0x0000000000B58000-memory.dmp Nirsoft behavioral2/memory/2684-140-0x0000000000A10000-0x0000000000A98000-memory.dmp Nirsoft behavioral2/memory/2684-141-0x0000000000A10000-0x0000000000A98000-memory.dmp Nirsoft behavioral2/memory/3528-145-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3528-146-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3528-148-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3528-149-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3232-150-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3232-151-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3232-153-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3232-154-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 2 IoCs
Processes:
Windows Update.exeWindows Update.exepid process 4992 Windows Update.exe 2684 Windows Update.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
PO983627289.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation PO983627289.exe -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Windows Update.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" Windows Update.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 14 whatismyipaddress.com -
Suspicious use of SetThreadContext 4 IoCs
Processes:
PO983627289.exeWindows Update.exeWindows Update.exedescription pid process target process PID 2440 set thread context of 1548 2440 PO983627289.exe PO983627289.exe PID 4992 set thread context of 2684 4992 Windows Update.exe Windows Update.exe PID 2684 set thread context of 3528 2684 Windows Update.exe vbc.exe PID 2684 set thread context of 3232 2684 Windows Update.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 7 IoCs
Processes:
PO983627289.exeWindows Update.exevbc.exeWindows Update.exepid process 2440 PO983627289.exe 2440 PO983627289.exe 4992 Windows Update.exe 4992 Windows Update.exe 3232 vbc.exe 3232 vbc.exe 2684 Windows Update.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
PO983627289.exeWindows Update.exepid process 2440 PO983627289.exe 4992 Windows Update.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Windows Update.exedescription pid process Token: SeDebugPrivilege 2684 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 2684 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
PO983627289.exePO983627289.exeWindows Update.exeWindows Update.exedescription pid process target process PID 2440 wrote to memory of 1548 2440 PO983627289.exe PO983627289.exe PID 2440 wrote to memory of 1548 2440 PO983627289.exe PO983627289.exe PID 2440 wrote to memory of 1548 2440 PO983627289.exe PO983627289.exe PID 1548 wrote to memory of 4992 1548 PO983627289.exe Windows Update.exe PID 1548 wrote to memory of 4992 1548 PO983627289.exe Windows Update.exe PID 1548 wrote to memory of 4992 1548 PO983627289.exe Windows Update.exe PID 4992 wrote to memory of 2684 4992 Windows Update.exe Windows Update.exe PID 4992 wrote to memory of 2684 4992 Windows Update.exe Windows Update.exe PID 4992 wrote to memory of 2684 4992 Windows Update.exe Windows Update.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3528 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe PID 2684 wrote to memory of 3232 2684 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO983627289.exe"C:\Users\Admin\AppData\Local\Temp\PO983627289.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO983627289.exe"C:\Users\Admin\AppData\Local\Temp\PO983627289.exe"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"5⤵
- Accesses Microsoft Outlook accounts
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"5⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\SysInfo.txtFilesize
49B
MD5ea5b54c83056d8fc473866723a96e947
SHA1a3c539647a265f0a857f14b662c3387bb1991413
SHA256a0e086aba51ca2e8b79a2064c8e3996b638bfb61bc7c972c53a98aefcb19a13b
SHA512e135089cbc1d9fd547839c77937e52316e8230d218700e01ac4bb66d442c9b7d0bec4460ae9a6fe1e4f8b5a7d9ff0fa305281acfffc069e8be7dbfcf5e3b6c88
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C:\Users\Admin\AppData\Local\Temp\holderwb.txtFilesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
837KB
MD5c9ddd7789409993921f935f42e7fcf1a
SHA1cd5e920aa114733fe22005fdb282c048d6fa6a75
SHA256fce56056a7028ed4787e39d614c90e84804ad0dc03185a6532834564b10b7d5a
SHA512e47730702a08704dd9fa2abeed91bdfa8b197c4c7754e1c0af3322c332e4bc82990193d90f6a81cf49d73f9ffd899119c22b2570beab86beddd06389dd3f5447
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
837KB
MD5c9ddd7789409993921f935f42e7fcf1a
SHA1cd5e920aa114733fe22005fdb282c048d6fa6a75
SHA256fce56056a7028ed4787e39d614c90e84804ad0dc03185a6532834564b10b7d5a
SHA512e47730702a08704dd9fa2abeed91bdfa8b197c4c7754e1c0af3322c332e4bc82990193d90f6a81cf49d73f9ffd899119c22b2570beab86beddd06389dd3f5447
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
837KB
MD5c9ddd7789409993921f935f42e7fcf1a
SHA1cd5e920aa114733fe22005fdb282c048d6fa6a75
SHA256fce56056a7028ed4787e39d614c90e84804ad0dc03185a6532834564b10b7d5a
SHA512e47730702a08704dd9fa2abeed91bdfa8b197c4c7754e1c0af3322c332e4bc82990193d90f6a81cf49d73f9ffd899119c22b2570beab86beddd06389dd3f5447
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memory/1548-132-0x0000000000AD0000-0x0000000000B58000-memory.dmpFilesize
544KB
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memory/1548-133-0x0000000000AD0000-0x0000000000B58000-memory.dmpFilesize
544KB
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memory/1548-134-0x0000000075390000-0x0000000075941000-memory.dmpFilesize
5.7MB
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memory/1548-130-0x0000000000000000-mapping.dmp
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memory/2440-131-0x0000000000400000-0x00000000004D8000-memory.dmpFilesize
864KB
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memory/2684-138-0x0000000000000000-mapping.dmp
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memory/2684-141-0x0000000000A10000-0x0000000000A98000-memory.dmpFilesize
544KB
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memory/2684-143-0x0000000075550000-0x0000000075B01000-memory.dmpFilesize
5.7MB
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memory/2684-140-0x0000000000A10000-0x0000000000A98000-memory.dmpFilesize
544KB
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memory/3232-154-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/3232-153-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/3232-151-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/3232-150-0x0000000000000000-mapping.dmp
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memory/3528-149-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/3528-148-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/3528-146-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/3528-145-0x0000000000000000-mapping.dmp
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memory/4992-142-0x0000000000400000-0x00000000004D8000-memory.dmpFilesize
864KB
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memory/4992-135-0x0000000000000000-mapping.dmp