Analysis
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max time kernel
144s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
22-11-2022 19:17
Static task
static1
Behavioral task
behavioral1
Sample
1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe
Resource
win10v2004-20220901-en
General
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Target
1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe
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Size
502KB
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MD5
022425300a675b63a39b87367eb479d6
-
SHA1
8ebaf81c0fdc92943d144f8fc0eabe3d3a31401c
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SHA256
1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443
-
SHA512
182aace96b3763001d476e2fcb5b975d928cd25cdd727f3512d7a7534cd0d076b3adeebc1d85dd06aa2a074678cde883a48897a3003ac46f350ab78e362be14c
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SSDEEP
6144:AbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9vH8:AQtqB5urTIoYWBQk1E+VF9mOx9U
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/1008-65-0x0000000000411654-mapping.dmp MailPassView behavioral1/memory/1008-64-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1008-68-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1008-69-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1008-71-0x0000000000400000-0x000000000041B000-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/1728-73-0x0000000000442628-mapping.dmp WebBrowserPassView behavioral1/memory/1728-72-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1728-76-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1728-77-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1728-79-0x0000000000400000-0x0000000000458000-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/1008-65-0x0000000000411654-mapping.dmp Nirsoft behavioral1/memory/1008-64-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1008-68-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1008-69-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1008-71-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1728-73-0x0000000000442628-mapping.dmp Nirsoft behavioral1/memory/1728-72-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1728-76-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1728-77-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1728-79-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
Processes:
Windows Update.exepid process 764 Windows Update.exe -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 764 Windows Update.exe -
Loads dropped DLL 1 IoCs
Processes:
1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exepid process 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.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-1-5-21-999675638-2867687379-27515722-1000\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 6 whatismyipaddress.com 3 whatismyipaddress.com 5 whatismyipaddress.com -
Suspicious use of SetThreadContext 2 IoCs
Processes:
Windows Update.exedescription pid process target process PID 764 set thread context of 1008 764 Windows Update.exe vbc.exe PID 764 set thread context of 1728 764 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 764 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 764 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exeWindows Update.exedescription pid process target process PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 1504 wrote to memory of 764 1504 1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe Windows Update.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1008 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe PID 764 wrote to memory of 1728 764 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe"C:\Users\Admin\AppData\Local\Temp\1938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1504 -
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:764 -
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:1008 -
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:1728
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
102B
MD5c5c2661daadc8c8f4ecd7a26035de944
SHA1bed4c3fdc525106c6ed26a2c66ccbb33e2a18c10
SHA256d6dcc4249e0fccb074dace3f2b064ec52aaa55086b85ed6f1528f0eeccb5cb32
SHA5126d69486525b21e6a9ed969b121d35ca442c5e06a512149c10e68e2aeac1b09a8788e2f1505f72c644abe8c7212c3d8d0fec9d61cb092a6a641cef5aa73873e5f
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Filesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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Filesize
502KB
MD5022425300a675b63a39b87367eb479d6
SHA18ebaf81c0fdc92943d144f8fc0eabe3d3a31401c
SHA2561938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443
SHA512182aace96b3763001d476e2fcb5b975d928cd25cdd727f3512d7a7534cd0d076b3adeebc1d85dd06aa2a074678cde883a48897a3003ac46f350ab78e362be14c
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Filesize
502KB
MD5022425300a675b63a39b87367eb479d6
SHA18ebaf81c0fdc92943d144f8fc0eabe3d3a31401c
SHA2561938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443
SHA512182aace96b3763001d476e2fcb5b975d928cd25cdd727f3512d7a7534cd0d076b3adeebc1d85dd06aa2a074678cde883a48897a3003ac46f350ab78e362be14c
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Filesize
502KB
MD5022425300a675b63a39b87367eb479d6
SHA18ebaf81c0fdc92943d144f8fc0eabe3d3a31401c
SHA2561938e8b37120c2998918a2c857fcdad85d41df14cb83f9b9c70aa006a4fea443
SHA512182aace96b3763001d476e2fcb5b975d928cd25cdd727f3512d7a7534cd0d076b3adeebc1d85dd06aa2a074678cde883a48897a3003ac46f350ab78e362be14c