Analysis
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max time kernel
150s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
18-05-2023 17:32
Static task
static1
Behavioral task
behavioral1
Sample
PO Lists --- pdf.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
PO Lists --- pdf.exe
Resource
win10v2004-20230220-en
General
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Target
PO Lists --- pdf.exe
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Size
1.2MB
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MD5
eea1fbd22436e2b085fa5fcc55ea052e
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SHA1
76f7c18a39a48b86dda253eaa146fd6e1aa5df89
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SHA256
43e66c483be9cbb9f35ce7f57bf255925abd25a8fc40b80d79bf0cd2a3f54af9
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SHA512
3f9d3756e4e5f0bc1841a3fbfffd12fdd52708bb97db36b01dbb96b34946944e42297d9eb6e871f4ba5d653771118035eb7fc88f948e806911916409fc1bbdbe
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SSDEEP
24576:/j0pZcKDySR/Pxt8eD8dSevyifwZpNZ0C:L0zOu/JtR8HvyuSeC
Malware Config
Extracted
Protocol: ftp- Host:
ftp.lucd.ru - Port:
21 - Username:
hwk@lucd.ru - Password:
obum@911
Signatures
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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
Processes:
PO Lists --- pdf.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions PO Lists --- pdf.exe -
NirSoft MailPassView 10 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral1/memory/524-61-0x0000000000400000-0x0000000000488000-memory.dmp MailPassView behavioral1/memory/524-62-0x0000000000400000-0x0000000000488000-memory.dmp MailPassView behavioral1/memory/524-64-0x0000000000400000-0x0000000000488000-memory.dmp MailPassView behavioral1/memory/524-66-0x0000000000400000-0x0000000000488000-memory.dmp MailPassView behavioral1/memory/524-68-0x0000000000400000-0x0000000000488000-memory.dmp MailPassView behavioral1/memory/1228-75-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1228-77-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1228-79-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/524-80-0x0000000004E10000-0x0000000004E50000-memory.dmp MailPassView behavioral1/memory/1228-81-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 9 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral1/memory/524-61-0x0000000000400000-0x0000000000488000-memory.dmp WebBrowserPassView behavioral1/memory/524-62-0x0000000000400000-0x0000000000488000-memory.dmp WebBrowserPassView behavioral1/memory/524-64-0x0000000000400000-0x0000000000488000-memory.dmp WebBrowserPassView behavioral1/memory/524-66-0x0000000000400000-0x0000000000488000-memory.dmp WebBrowserPassView behavioral1/memory/524-68-0x0000000000400000-0x0000000000488000-memory.dmp WebBrowserPassView behavioral1/memory/524-80-0x0000000004E10000-0x0000000004E50000-memory.dmp WebBrowserPassView behavioral1/memory/1800-82-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1800-84-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1800-87-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 13 IoCs
Processes:
resource yara_rule behavioral1/memory/524-61-0x0000000000400000-0x0000000000488000-memory.dmp Nirsoft behavioral1/memory/524-62-0x0000000000400000-0x0000000000488000-memory.dmp Nirsoft behavioral1/memory/524-64-0x0000000000400000-0x0000000000488000-memory.dmp Nirsoft behavioral1/memory/524-66-0x0000000000400000-0x0000000000488000-memory.dmp Nirsoft behavioral1/memory/524-68-0x0000000000400000-0x0000000000488000-memory.dmp Nirsoft behavioral1/memory/1228-75-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1228-77-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1228-79-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/524-80-0x0000000004E10000-0x0000000004E50000-memory.dmp Nirsoft behavioral1/memory/1228-81-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1800-82-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1800-84-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1800-87-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
Processes:
PO Lists --- pdf.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools PO Lists --- pdf.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
PO Lists --- pdf.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion PO Lists --- pdf.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion PO Lists --- pdf.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-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
PO Lists --- pdf.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" PO Lists --- pdf.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 whatismyipaddress.com 6 whatismyipaddress.com -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
PO Lists --- pdf.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum PO Lists --- pdf.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 PO Lists --- pdf.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
PO Lists --- pdf.exePO Lists --- pdf.exedescription pid process target process PID 1736 set thread context of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 524 set thread context of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 set thread context of 1800 524 PO Lists --- pdf.exe vbc.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
PO Lists --- pdf.exepid process 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe 524 PO Lists --- pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
PO Lists --- pdf.exedescription pid process Token: SeDebugPrivilege 524 PO Lists --- pdf.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
PO Lists --- pdf.exepid process 524 PO Lists --- pdf.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
PO Lists --- pdf.exePO Lists --- pdf.exedescription pid process target process PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 1736 wrote to memory of 524 1736 PO Lists --- pdf.exe PO Lists --- pdf.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1228 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe PID 524 wrote to memory of 1800 524 PO Lists --- pdf.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO Lists --- pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO Lists --- pdf.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO Lists --- pdf.exe"{path}"2⤵
- 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"3⤵
- 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"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\holderwb.txtFilesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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memory/524-68-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/524-59-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/524-71-0x0000000004E10000-0x0000000004E50000-memory.dmpFilesize
256KB
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memory/524-89-0x0000000004E10000-0x0000000004E50000-memory.dmpFilesize
256KB
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memory/524-74-0x00000000006F0000-0x00000000006F8000-memory.dmpFilesize
32KB
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memory/524-60-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/524-61-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/524-80-0x0000000004E10000-0x0000000004E50000-memory.dmpFilesize
256KB
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memory/524-63-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/524-64-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/524-66-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/524-78-0x0000000004E10000-0x0000000004E50000-memory.dmpFilesize
256KB
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memory/524-62-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/1228-75-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1228-77-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1228-79-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1228-81-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1736-57-0x0000000005D80000-0x0000000005E48000-memory.dmpFilesize
800KB
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memory/1736-54-0x0000000000A70000-0x0000000000BB4000-memory.dmpFilesize
1.3MB
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memory/1736-56-0x0000000000510000-0x0000000000524000-memory.dmpFilesize
80KB
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memory/1736-55-0x0000000000A20000-0x0000000000A60000-memory.dmpFilesize
256KB
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memory/1736-58-0x00000000050D0000-0x0000000005158000-memory.dmpFilesize
544KB
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memory/1800-82-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1800-84-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1800-87-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB