Analysis
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max time kernel
95s -
max time network
163s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
27-11-2022 14:52
Static task
static1
Behavioral task
behavioral1
Sample
d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe
Resource
win10v2004-20220812-en
General
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Target
d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe
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Size
540KB
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MD5
a9d161bde9f720d350385f4ef3265e95
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SHA1
fad1daa4408dbf3ce9a478805167e5c0c30ddbac
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SHA256
d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6
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SHA512
09cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b
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SSDEEP
6144:uu6GGWdMkbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnxY:rQtqB5urTIoYWBQk1E+VF9mOx9Sww
Malware Config
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/700-67-0x0000000000411654-mapping.dmp MailPassView behavioral1/memory/700-66-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/700-70-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/700-72-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/700-73-0x0000000000400000-0x000000000041B000-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/2012-74-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/2012-75-0x0000000000442628-mapping.dmp WebBrowserPassView behavioral1/memory/2012-78-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/2012-79-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/2012-80-0x0000000000400000-0x0000000000458000-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/700-67-0x0000000000411654-mapping.dmp Nirsoft behavioral1/memory/700-66-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/700-70-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/700-72-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/700-73-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/2012-74-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/2012-75-0x0000000000442628-mapping.dmp Nirsoft behavioral1/memory/2012-78-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/2012-79-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/2012-80-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
Processes:
Windows Update.exepid process 1644 Windows Update.exe -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 1644 Windows Update.exe -
Loads dropped DLL 1 IoCs
Processes:
d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exepid process 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.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-1-5-21-999675638-2867687379-27515722-1000\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-1-5-21-999675638-2867687379-27515722-1000\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 4 whatismyipaddress.com 6 whatismyipaddress.com 7 whatismyipaddress.com -
Suspicious use of SetThreadContext 2 IoCs
Processes:
Windows Update.exedescription pid process target process PID 1644 set thread context of 700 1644 Windows Update.exe vbc.exe PID 1644 set thread context of 2012 1644 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 2 IoCs
Processes:
Windows Update.exepid process 1644 Windows Update.exe 1644 Windows Update.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Windows Update.exedescription pid process Token: SeDebugPrivilege 1644 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 1644 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exeWindows Update.exedescription pid process target process PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1460 wrote to memory of 1644 1460 d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe Windows Update.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 700 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe PID 1644 wrote to memory of 2012 1644 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe"C:\Users\Admin\AppData\Local\Temp\d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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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 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\holdermail.txt"3⤵
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
102B
MD5ef0efecd1b5d82b386501ff33f3fdf8e
SHA1bcff727c9ec55dcf816d831e0831ce4d7e5af6d0
SHA256b56510fd5378138d0671cd32a54d1784fcc506567a04311a101161c412b21d8f
SHA512dffdbcdc20b25683d2c3d4585b6cf7bdaccb36d6458727c6c7a4c8e3eb5fbb2cb6b47e08b358e53387c1f568095901f3ad93d14e566fe028cb99ee7d2ed080c5
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C:\Users\Admin\AppData\Local\Temp\holdermail.txtFilesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
540KB
MD5a9d161bde9f720d350385f4ef3265e95
SHA1fad1daa4408dbf3ce9a478805167e5c0c30ddbac
SHA256d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6
SHA51209cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
540KB
MD5a9d161bde9f720d350385f4ef3265e95
SHA1fad1daa4408dbf3ce9a478805167e5c0c30ddbac
SHA256d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6
SHA51209cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b
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\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
540KB
MD5a9d161bde9f720d350385f4ef3265e95
SHA1fad1daa4408dbf3ce9a478805167e5c0c30ddbac
SHA256d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6
SHA51209cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b
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memory/700-66-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/700-72-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/700-73-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/700-67-0x0000000000411654-mapping.dmp
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memory/700-70-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1460-62-0x0000000074D80000-0x000000007532B000-memory.dmpFilesize
5.7MB
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memory/1460-55-0x0000000074D80000-0x000000007532B000-memory.dmpFilesize
5.7MB
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memory/1460-56-0x0000000074D80000-0x000000007532B000-memory.dmpFilesize
5.7MB
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memory/1460-54-0x0000000075F81000-0x0000000075F83000-memory.dmpFilesize
8KB
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memory/1644-71-0x0000000002155000-0x0000000002166000-memory.dmpFilesize
68KB
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memory/1644-58-0x0000000000000000-mapping.dmp
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memory/1644-65-0x0000000074D80000-0x000000007532B000-memory.dmpFilesize
5.7MB
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memory/1644-63-0x0000000074D80000-0x000000007532B000-memory.dmpFilesize
5.7MB
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memory/1644-82-0x0000000002155000-0x0000000002166000-memory.dmpFilesize
68KB
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memory/2012-74-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/2012-75-0x0000000000442628-mapping.dmp
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memory/2012-78-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/2012-79-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/2012-80-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB