Analysis
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max time kernel
147s -
max time network
142s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
18-01-2022 19:12
Behavioral task
behavioral1
Sample
31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec.xlsm
Resource
win10-en-20211208
General
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Target
31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec.xlsm
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Size
99KB
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MD5
5a8fa49e1cd7e07b7ff5e3fcc0377a47
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SHA1
ce476bdd4b8dc12cbbc20ecadfc3963b52ccc180
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SHA256
31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec
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SHA512
2cc8a654aa02445203e56107e407027b880123b0630724b8ec86162142b954fe25b1d04e0cd66c6d99663becf36513bac4da2ac3cf95b936d9b9198e77bdf415
Malware Config
Extracted
http://avionxpress.com/lp/T9b1Bga4FdDfP5HI/
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 3924 3052 rundll32.exe 67 -
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 3 IoCs
flow pid Process 37 3708 rundll32.exe 38 3708 rundll32.exe 39 3708 rundll32.exe -
Downloads MZ/PE file
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Loads dropped DLL 2 IoCs
pid Process 3924 rundll32.exe 948 rundll32.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Usioyksnyoby\gqqqorwnsylngoh.uln rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 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 3052 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3708 rundll32.exe 3708 rundll32.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE 3052 EXCEL.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3052 wrote to memory of 3924 3052 EXCEL.EXE 70 PID 3052 wrote to memory of 3924 3052 EXCEL.EXE 70 PID 3052 wrote to memory of 3924 3052 EXCEL.EXE 70 PID 3924 wrote to memory of 948 3924 rundll32.exe 72 PID 3924 wrote to memory of 948 3924 rundll32.exe 72 PID 3924 wrote to memory of 948 3924 rundll32.exe 72 PID 948 wrote to memory of 372 948 rundll32.exe 73 PID 948 wrote to memory of 372 948 rundll32.exe 73 PID 948 wrote to memory of 372 948 rundll32.exe 73 PID 372 wrote to memory of 3708 372 rundll32.exe 74 PID 372 wrote to memory of 3708 372 rundll32.exe 74 PID 372 wrote to memory of 3708 372 rundll32.exe 74
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\31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052 -
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe ..\ourl.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3924 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\ourl.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:948 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Usioyksnyoby\gqqqorwnsylngoh.uln",rxlWHKYNnyi4⤵
- Suspicious use of WriteProcessMemory
PID:372 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Usioyksnyoby\gqqqorwnsylngoh.uln",DllRegisterServer5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3708
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