Analysis
- max time kernel
147s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
24/02/2022, 08:25
General
- Target MAIL_24022022.xls
- Size 115KB
- Sample220224-kbabsadfer
- SHA256 4213677263ce404cc1aeaeb948d85eeb372c93d5a72b690f674bfbbc10dedb39
Malware Config
Extracted
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xlm4.0
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xlm40.dropper
https://new.tokosatu.com/wp-admin/QzzQZAIDuBhOplwOnhJ/
Extracted
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emotet
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Epoch5
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46.41.130.218:8080
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168.197.250.14:80
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195.77.239.39:8080
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210.57.209.142:8080
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203.153.216.46:443
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45.71.195.104:8080
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185.148.168.15:8080
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78.46.73.125:443
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116.124.128.206:8080
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68.183.93.250:443
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54.37.106.167:8080
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66.42.57.149:443
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103.41.204.169:8080
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62.171.178.147:8080
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37.59.209.141:8080
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61.7.231.229:443
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185.148.168.220:8080
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139.196.72.155:8080
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194.9.172.107:8080
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191.252.103.16:80
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.
- suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Drops file in System32 directory 1 IoCs
- 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 behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 12 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\MAIL_24022022.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWow64\regsvr32.exeC:\Windows\SysWow64\regsvr32.exe /s ..\su1.ocx2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\regsvr32.exeC:\Windows\SysWOW64\regsvr32.exe /s "C:\Windows\SysWOW64\Fyisgjk\ewxgtljhyxki.dyb"3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1584-139-0x0000000000F30000-0x0000000000F55000-memory.dmp
memory/2804-130-0x00007FFBD6210000-0x00007FFBD6220000-memory.dmp
memory/2804-131-0x00007FFBD6210000-0x00007FFBD6220000-memory.dmp
memory/2804-132-0x00007FFBD6210000-0x00007FFBD6220000-memory.dmp
memory/2804-133-0x00007FFBD6210000-0x00007FFBD6220000-memory.dmp
memory/2804-134-0x00007FFBD6210000-0x00007FFBD6220000-memory.dmp
memory/2804-135-0x00007FFC1622D000-0x00007FFC1622E000-memory.dmp
memory/2804-136-0x00007FFC16230000-0x00007FFC16231000-memory.dmp
memory/3364-142-0x0000000000C10000-0x0000000000C35000-memory.dmp