Analysis
- max time kernel
150s - max time network
144s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
11/01/2022, 11:03
General
- Target 71d7ea8bbefdc54f1fd9856140ba1a19.xls
- Size 113KB
- Sample220111-m5pdxafcg2
- SHA256 e16ad05be2e3a3b4411d4d2ba91174998d24ac0a4d8a2eec6e094fd70526dc0d
Malware Config
Extracted
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xlm4.0
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xlm40.dropper
http://gaidov.bg/wp-includes/Ug/
Extracted
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emotet
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Epoch4
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131.100.24.231:80
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209.59.138.75:7080
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103.8.26.102:8080
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178.79.147.66:8080
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51.38.71.0:443
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79.172.212.216:8080
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162.214.50.39:7080
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203.114.109.124:443
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45.142.114.231:8080
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212.237.5.209:443
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104.251.214.46:8080
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212.237.56.116:7080
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107.182.225.142:8080
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104.168.155.129:8080
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138.185.72.26:8080
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45.118.135.203:7080
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216.158.226.206:443
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103.75.201.2:443
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158.69.222.101:443
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178.63.25.185:443
Signatures
- Emotet
Emotet is a trojan that is primarily spread through spam emails.
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Drops file in System32 directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of SetWindowsHookEx 12 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
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\71d7ea8bbefdc54f1fd9856140ba1a19.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe ..\sun.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\sun.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Mylrfat\paodo.qqd",fMSID4⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/492-119-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp
memory/492-116-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp
memory/492-120-0x000001D09B0D0000-0x000001D09B0D2000-memory.dmp
memory/492-121-0x000001D09B0D0000-0x000001D09B0D2000-memory.dmp
memory/492-122-0x000001D09B0D0000-0x000001D09B0D2000-memory.dmp
memory/492-128-0x00007FF8C4EA0000-0x00007FF8C4EB0000-memory.dmp
memory/492-129-0x00007FF8C4EA0000-0x00007FF8C4EB0000-memory.dmp
memory/492-115-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp
memory/492-118-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp
memory/492-117-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp
memory/2020-272-0x0000000002AE0000-0x0000000002C2A000-memory.dmp
memory/3296-273-0x0000000002710000-0x0000000002738000-memory.dmp