Analysis
- max time kernel
141s - max time network
133s - platform
windows10-1703_x64 - resource
win10-20230220-en - resource tags
- submitted
21/03/2023, 22:51
General
- Target K-1 03.21.2023.one
- Size 280KB
- Sample230321-2syjdade86
- SHA256 e173ecebfd5b01766dd8184250d5f2d442507b9b097e4ced319c246b78550d85
Malware Config
Extracted
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emotet
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Epoch4
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213.239.212.5:443
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129.232.188.93:443
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103.43.75.120:443
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197.242.150.244:8080
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1.234.2.232:8080
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110.232.117.186:8080
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95.217.221.146:8080
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159.89.202.34:443
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159.65.88.10:8080
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82.223.21.224:8080
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169.57.156.166:8080
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45.176.232.124:443
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45.235.8.30:8080
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173.212.193.249:8080
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107.170.39.149:8080
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119.59.103.152:8080
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167.172.199.165:8080
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91.207.28.33:8080
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185.4.135.165:8080
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104.168.155.143:8080
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.
- Blocklisted process makes network request 11 IoCs
- Loads dropped DLL 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 2 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of SetWindowsHookEx 14 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Program Files\Microsoft Office\Root\Office16\ONENOTE.EXE"C:\Program Files\Microsoft Office\Root\Office16\ONENOTE.EXE" "C:\Users\Admin\AppData\Local\Temp\K-1 03.21.2023.one"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\OneNote\16.0\Exported\{11BD3AE3-FE9A-446F-A827-C870DF0A2283}\NT\0\output1.js"2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\regsvr32.exe"C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\o9cy1qngv\N4XS0dlF0TC.dll"3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\regsvr32.exeC:\Windows\system32\regsvr32.exe "C:\Windows\system32\HfwiLKSUBlpSZHASf\GAoVlWn.dll"4⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
000000BL.bin
000000BN.bin
000000BO.bin
output1.js
jtyvebn20.zip
N4XS0dlF0TC.dll
{963215E9-4A87-45F6-9910-3BE0EF979A4B}
N4XS0dlF0TC.dll
memory/1012-128-0x00007FFE3FE40000-0x00007FFE3FE50000-memory.dmp
memory/1012-127-0x00007FFE3FE40000-0x00007FFE3FE50000-memory.dmp
memory/1012-124-0x00007FFE43660000-0x00007FFE43670000-memory.dmp
memory/1012-123-0x00007FFE43660000-0x00007FFE43670000-memory.dmp
memory/1012-122-0x00007FFE43660000-0x00007FFE43670000-memory.dmp
memory/1012-640-0x000001DCE5B00000-0x000001DCE5B2F000-memory.dmp
memory/1012-121-0x00007FFE43660000-0x00007FFE43670000-memory.dmp
memory/3836-681-0x00000000026C0000-0x000000000271A000-memory.dmp
memory/3836-688-0x0000000000B70000-0x0000000000B71000-memory.dmp