Analysis
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max time kernel
88s -
max time network
188s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
25-11-2022 02:53
Static task
static1
Behavioral task
behavioral1
Sample
3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe
Resource
win10v2004-20220812-en
General
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Target
3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe
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Size
502KB
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MD5
849e250bf6b07de0fc59385ab77a72e8
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SHA1
5fd880f856e032e0f654899475df242c0bb9ab34
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SHA256
3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a
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SHA512
6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87
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SSDEEP
6144:grLbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9bHL:grLQtqB5urTIoYWBQk1E+VF9mOx9n
Malware Config
Signatures
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NirSoft MailPassView 9 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/1556-66-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1556-67-0x0000000000411654-mapping.dmp MailPassView behavioral1/memory/1556-70-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1556-72-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1556-82-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1556-83-0x0000000000400000-0x000000000041B000-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/1680-73-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1680-74-0x0000000000442628-mapping.dmp WebBrowserPassView behavioral1/memory/1680-77-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1680-78-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1680-80-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 14 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/1556-66-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1556-67-0x0000000000411654-mapping.dmp Nirsoft behavioral1/memory/1556-70-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1556-72-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1680-73-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1680-74-0x0000000000442628-mapping.dmp Nirsoft behavioral1/memory/1680-77-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1680-78-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1680-80-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1556-82-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1556-83-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
Processes:
Windows Update.exepid process 592 Windows Update.exe -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 592 Windows Update.exe -
Loads dropped DLL 1 IoCs
Processes:
3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exepid process 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.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-1-5-21-3406023954-474543476-3319432036-1000\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-1-5-21-3406023954-474543476-3319432036-1000\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 592 set thread context of 1556 592 Windows Update.exe vbc.exe PID 592 set thread context of 1680 592 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 592 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 592 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exeWindows Update.exedescription pid process target process PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 1876 wrote to memory of 592 1876 3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe Windows Update.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1556 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe PID 592 wrote to memory of 1680 592 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe"C:\Users\Admin\AppData\Local\Temp\3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1876 -
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:592 -
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:1556 -
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:1680
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
102B
MD56ebb2651a36b906645147fbd608974cc
SHA1b5be3a0edd36c0c9f08ac5e26e10d06faa5aad52
SHA256d5a83d1cebeeb65f85cbb76169fe18a2fe392e343176ad7e1530b8d46323ba1d
SHA5128e6a901b16f83bbb47f1ec9c2d7e6b3b5b9bc430a1898ca0c19d8de7a3cd926df224e64e2789521a489a71bbc16418e3b73ae1c957fc675919dc3618d7ce2ca9
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Filesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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Filesize
502KB
MD5849e250bf6b07de0fc59385ab77a72e8
SHA15fd880f856e032e0f654899475df242c0bb9ab34
SHA2563664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a
SHA5126e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87
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Filesize
502KB
MD5849e250bf6b07de0fc59385ab77a72e8
SHA15fd880f856e032e0f654899475df242c0bb9ab34
SHA2563664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a
SHA5126e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87
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Filesize
502KB
MD5849e250bf6b07de0fc59385ab77a72e8
SHA15fd880f856e032e0f654899475df242c0bb9ab34
SHA2563664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a
SHA5126e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87