Analysis
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max time kernel
234s -
max time network
275s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
24-11-2022 04:24
Static task
static1
Behavioral task
behavioral1
Sample
822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe
Resource
win10v2004-20220901-en
General
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Target
822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe
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Size
502KB
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MD5
ebcc0755522b8e1ac38b43992bbab045
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SHA1
6888d7957ce553b35f98442024b58f333e4ee590
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SHA256
822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680
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SHA512
1be29027426a78aabcd9e5c073dabec8591a4d68465cc6af730c048229c6f020477751824957c4cf5f8b644ea2e339dd20c0cac4901202703104e06448a95d75
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SSDEEP
6144:ALvbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9zHq:ALvQtqB5urTIoYWBQk1E+VF9mOx9e
Malware Config
Extracted
Protocol: smtp- Host:
smtp.gmail.com - Port:
587 - Username:
[email protected] - Password:
19921337
Signatures
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NirSoft MailPassView 8 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule \Users\Admin\AppData\Roaming\Windows Update.exe MailPassView C:\Users\Admin\AppData\Roaming\Windows Update.exe MailPassView C:\Users\Admin\AppData\Roaming\Windows Update.exe MailPassView behavioral1/memory/1580-65-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1580-66-0x0000000000411654-mapping.dmp MailPassView behavioral1/memory/1580-69-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1580-71-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1580-78-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 8 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule \Users\Admin\AppData\Roaming\Windows Update.exe WebBrowserPassView C:\Users\Admin\AppData\Roaming\Windows Update.exe WebBrowserPassView C:\Users\Admin\AppData\Roaming\Windows Update.exe WebBrowserPassView behavioral1/memory/1264-72-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1264-73-0x0000000000442628-mapping.dmp WebBrowserPassView behavioral1/memory/1264-76-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1264-77-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1264-80-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 13 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Roaming\Windows Update.exe Nirsoft C:\Users\Admin\AppData\Roaming\Windows Update.exe Nirsoft C:\Users\Admin\AppData\Roaming\Windows Update.exe Nirsoft behavioral1/memory/1580-65-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1580-66-0x0000000000411654-mapping.dmp Nirsoft behavioral1/memory/1580-69-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1580-71-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1264-72-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1264-73-0x0000000000442628-mapping.dmp Nirsoft behavioral1/memory/1264-76-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1264-77-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1580-78-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1264-80-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
Processes:
Windows Update.exepid process 664 Windows Update.exe -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 664 Windows Update.exe -
Loads dropped DLL 1 IoCs
Processes:
822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exepid process 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe -
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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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-1-5-21-1214520366-621468234-4062160515-1000\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-1-5-21-1214520366-621468234-4062160515-1000\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 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 7 whatismyipaddress.com 4 whatismyipaddress.com 6 whatismyipaddress.com -
Suspicious use of SetThreadContext 2 IoCs
Processes:
Windows Update.exedescription pid process target process PID 664 set thread context of 1580 664 Windows Update.exe vbc.exe PID 664 set thread context of 1264 664 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 use of AdjustPrivilegeToken 1 IoCs
Processes:
Windows Update.exedescription pid process Token: SeDebugPrivilege 664 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 664 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exeWindows Update.exedescription pid process target process PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 1680 wrote to memory of 664 1680 822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe Windows Update.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1580 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe PID 664 wrote to memory of 1264 664 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe"C:\Users\Admin\AppData\Local\Temp\822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"2⤵
- Executes dropped EXE
- Deletes itself
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:664 -
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
PID:1580 -
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⤵PID:1264
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\SysInfo.txtFilesize
102B
MD52bbaded4b262e4b89228e1b7338db34d
SHA118c6ba2925fa27e48a72ef4080022fd55435fb05
SHA256d4dde51f0f2fe918c99a85cd700aa75a1a900cb196b5b91fb2c96d391a90977c
SHA512453836e31bcfad261f4520848380720e411c5dcdba35254d4c8185f9a1a8881073c412ae53c6ceb03b9e453eaf3b97afb2179491b518a05fdd5ec0f71791f97f
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C:\Users\Admin\AppData\Local\Temp\holderwb.txtFilesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
502KB
MD5ebcc0755522b8e1ac38b43992bbab045
SHA16888d7957ce553b35f98442024b58f333e4ee590
SHA256822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680
SHA5121be29027426a78aabcd9e5c073dabec8591a4d68465cc6af730c048229c6f020477751824957c4cf5f8b644ea2e339dd20c0cac4901202703104e06448a95d75
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
502KB
MD5ebcc0755522b8e1ac38b43992bbab045
SHA16888d7957ce553b35f98442024b58f333e4ee590
SHA256822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680
SHA5121be29027426a78aabcd9e5c073dabec8591a4d68465cc6af730c048229c6f020477751824957c4cf5f8b644ea2e339dd20c0cac4901202703104e06448a95d75
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\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
502KB
MD5ebcc0755522b8e1ac38b43992bbab045
SHA16888d7957ce553b35f98442024b58f333e4ee590
SHA256822972deb4622e30ff40629f66ce291d0830f3aac840550fcdecd43cd7697680
SHA5121be29027426a78aabcd9e5c073dabec8591a4d68465cc6af730c048229c6f020477751824957c4cf5f8b644ea2e339dd20c0cac4901202703104e06448a95d75
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memory/664-70-0x0000000000265000-0x0000000000276000-memory.dmpFilesize
68KB
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memory/664-81-0x0000000000265000-0x0000000000276000-memory.dmpFilesize
68KB
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memory/664-57-0x0000000000000000-mapping.dmp
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memory/664-62-0x00000000740B0000-0x000000007465B000-memory.dmpFilesize
5.7MB
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memory/664-64-0x00000000740B0000-0x000000007465B000-memory.dmpFilesize
5.7MB
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memory/1264-72-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1264-73-0x0000000000442628-mapping.dmp
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memory/1264-76-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1264-77-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1264-80-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1580-66-0x0000000000411654-mapping.dmp
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memory/1580-69-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1580-65-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1580-71-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1580-78-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1680-54-0x0000000075671000-0x0000000075673000-memory.dmpFilesize
8KB
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memory/1680-61-0x00000000740B0000-0x000000007465B000-memory.dmpFilesize
5.7MB
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memory/1680-55-0x00000000740B0000-0x000000007465B000-memory.dmpFilesize
5.7MB