Analysis
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max time kernel
135s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
24-11-2022 23:31
Static task
static1
Behavioral task
behavioral1
Sample
787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe
Resource
win10v2004-20220901-en
General
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Target
787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe
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Size
502KB
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MD5
7a6d2ae925ccae9dc1dd94afe1ac508a
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SHA1
18c9d67b20d8263bfafef5a7d60e571e08586a0b
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SHA256
787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c
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SHA512
8006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e
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SSDEEP
6144:RrLbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9bHZ:RrLQtqB5urTIoYWBQk1E+VF9mOx9F
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/1924-66-0x0000000000411654-mapping.dmp MailPassView behavioral1/memory/1924-65-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1924-69-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1924-72-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1924-81-0x0000000000400000-0x000000000041B000-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/1980-73-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1980-74-0x0000000000442628-mapping.dmp WebBrowserPassView behavioral1/memory/1980-77-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1980-78-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1980-80-0x0000000000400000-0x0000000000458000-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/1924-66-0x0000000000411654-mapping.dmp Nirsoft behavioral1/memory/1924-65-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1924-69-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1924-72-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1980-73-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1980-74-0x0000000000442628-mapping.dmp Nirsoft behavioral1/memory/1980-77-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1980-78-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1980-80-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1924-81-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
Processes:
Windows Update.exepid process 1128 Windows Update.exe -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 1128 Windows Update.exe -
Loads dropped DLL 1 IoCs
Processes:
787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exepid process 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.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-1-5-21-575491160-2295418218-1540667289-1000\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-1-5-21-575491160-2295418218-1540667289-1000\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 1128 set thread context of 1924 1128 Windows Update.exe vbc.exe PID 1128 set thread context of 1980 1128 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 1128 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 1128 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exeWindows Update.exedescription pid process target process PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1364 wrote to memory of 1128 1364 787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe Windows Update.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1924 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe PID 1128 wrote to memory of 1980 1128 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe"C:\Users\Admin\AppData\Local\Temp\787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.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 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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\SysInfo.txtFilesize
102B
MD58f61e9fc965879545f17a2afd0816d2d
SHA139000de10c6e786cd50dc47c6fa121d87d0dc5e6
SHA25631ce06a4d7b8096f59ab5d9ce75edea84cbae960801b3db455e1ffe51c77a4eb
SHA512e24811ee9380f3dd551ee9fbf974f8fd45731f12f07e395db886d8bc957f26c958f5590c58de53e2e59de6ba931eca6c860103c5c63321a2fdd223919530e01e
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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
MD57a6d2ae925ccae9dc1dd94afe1ac508a
SHA118c9d67b20d8263bfafef5a7d60e571e08586a0b
SHA256787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c
SHA5128006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
502KB
MD57a6d2ae925ccae9dc1dd94afe1ac508a
SHA118c9d67b20d8263bfafef5a7d60e571e08586a0b
SHA256787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c
SHA5128006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e
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\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
502KB
MD57a6d2ae925ccae9dc1dd94afe1ac508a
SHA118c9d67b20d8263bfafef5a7d60e571e08586a0b
SHA256787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c
SHA5128006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e
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memory/1128-58-0x0000000000000000-mapping.dmp
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memory/1128-71-0x0000000000165000-0x0000000000176000-memory.dmpFilesize
68KB
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memory/1128-63-0x0000000073EF0000-0x000000007449B000-memory.dmpFilesize
5.7MB
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memory/1128-82-0x0000000000165000-0x0000000000176000-memory.dmpFilesize
68KB
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memory/1128-70-0x0000000073EF0000-0x000000007449B000-memory.dmpFilesize
5.7MB
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memory/1364-62-0x0000000073EF0000-0x000000007449B000-memory.dmpFilesize
5.7MB
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memory/1364-56-0x0000000073EF0000-0x000000007449B000-memory.dmpFilesize
5.7MB
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memory/1364-55-0x0000000073EF0000-0x000000007449B000-memory.dmpFilesize
5.7MB
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memory/1364-54-0x0000000075E11000-0x0000000075E13000-memory.dmpFilesize
8KB
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memory/1924-69-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1924-72-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1924-65-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1924-81-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1924-66-0x0000000000411654-mapping.dmp
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memory/1980-73-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1980-74-0x0000000000442628-mapping.dmp
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memory/1980-77-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1980-78-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1980-80-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB