Analysis
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max time kernel
157s -
max time network
148s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
04-12-2021 03:08
Behavioral task
behavioral1
Sample
f26a443ac89f9b418959ed6f59163358f57a469af9a4509ca82bfec3e6d092b0.xlsm
Resource
win10-en-20211014
General
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Target
f26a443ac89f9b418959ed6f59163358f57a469af9a4509ca82bfec3e6d092b0.xlsm
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Size
37KB
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MD5
b85066e6d286499120d91f942f43d371
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SHA1
1cfc720d33149fb6e1600144c701b057edc7c38c
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SHA256
f26a443ac89f9b418959ed6f59163358f57a469af9a4509ca82bfec3e6d092b0
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SHA512
9c676cc214ebfb50326858fc91ebae9811a4b2d3924f742d87eb0274766bdc8c1e4e8d394d3cdea7e6fcdaab2ce0c61d0a8f040c3026541a319755f2bc777f61
Malware Config
Extracted
http://inorte.com.br/awkl2/NFkGvrZkoh7TdwolFM/
Extracted
emotet
Epoch4
172.104.227.98:443
31.207.89.74:8080
46.55.222.11:443
41.76.108.46:8080
103.8.26.103:8080
185.184.25.237:8080
103.8.26.102:8080
203.114.109.124:443
45.118.115.99:8080
178.79.147.66:8080
58.227.42.236:80
45.118.135.203:7080
103.75.201.2:443
195.154.133.20:443
192.254.71.210:443
45.142.114.231:8080
212.237.5.209:443
207.38.84.195:8080
104.251.214.46:8080
212.237.17.99:8080
212.237.56.116:7080
216.158.226.206:443
110.232.117.186:8080
158.69.222.101:443
107.182.225.142:8080
176.104.106.96:8080
81.0.236.90:443
50.116.54.215:443
138.185.72.26:8080
51.68.175.8:8080
210.57.217.132:8080
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.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1592 3992 rundll32.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 40 2812 rundll32.exe -
Downloads MZ/PE file
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Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32.exepid process 1592 rundll32.exe 5028 rundll32.exe -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification C:\Windows\SysWOW64\Mlmeykththemvtt\sdgddnexo.vvj 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.
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3992 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
rundll32.exepid process 2812 rundll32.exe 2812 rundll32.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE 3992 EXCEL.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
EXCEL.EXErundll32.exerundll32.exerundll32.exedescription pid process target process PID 3992 wrote to memory of 1592 3992 EXCEL.EXE rundll32.exe PID 3992 wrote to memory of 1592 3992 EXCEL.EXE rundll32.exe PID 3992 wrote to memory of 1592 3992 EXCEL.EXE rundll32.exe PID 1592 wrote to memory of 5028 1592 rundll32.exe rundll32.exe PID 1592 wrote to memory of 5028 1592 rundll32.exe rundll32.exe PID 1592 wrote to memory of 5028 1592 rundll32.exe rundll32.exe PID 5028 wrote to memory of 4948 5028 rundll32.exe rundll32.exe PID 5028 wrote to memory of 4948 5028 rundll32.exe rundll32.exe PID 5028 wrote to memory of 4948 5028 rundll32.exe rundll32.exe PID 4948 wrote to memory of 2812 4948 rundll32.exe rundll32.exe PID 4948 wrote to memory of 2812 4948 rundll32.exe rundll32.exe PID 4948 wrote to memory of 2812 4948 rundll32.exe rundll32.exe
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\f26a443ac89f9b418959ed6f59163358f57a469af9a4509ca82bfec3e6d092b0.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3992 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe ..\bestb.ocx,D"&"l"&"l"&"R"&"eg"&"i"&"s"&"t"&"erServer2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1592 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\bestb.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:5028 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Mlmeykththemvtt\sdgddnexo.vvj",CQvKg4⤵
- Suspicious use of WriteProcessMemory
PID:4948 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Mlmeykththemvtt\sdgddnexo.vvj",DllRegisterServer5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:2812
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
2f93cb3701205b257b8ef5e76545923b
SHA1c53d45e900d52a0a4802f858ac94a10bdbff3d15
SHA25616211b428f9d5da08b3a0d77589bf217f34558388d52d294f7d37dfe5e44b2e0
SHA5122c095cce1927a872f66457b18d4f8d71cb62af05dbfd8fef930959f9cebeada93557acf11218b5d9798f59f4de565cec7b86c03410d7bf68249ccd5f86625095
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MD5
2f93cb3701205b257b8ef5e76545923b
SHA1c53d45e900d52a0a4802f858ac94a10bdbff3d15
SHA25616211b428f9d5da08b3a0d77589bf217f34558388d52d294f7d37dfe5e44b2e0
SHA5122c095cce1927a872f66457b18d4f8d71cb62af05dbfd8fef930959f9cebeada93557acf11218b5d9798f59f4de565cec7b86c03410d7bf68249ccd5f86625095
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MD5
2f93cb3701205b257b8ef5e76545923b
SHA1c53d45e900d52a0a4802f858ac94a10bdbff3d15
SHA25616211b428f9d5da08b3a0d77589bf217f34558388d52d294f7d37dfe5e44b2e0
SHA5122c095cce1927a872f66457b18d4f8d71cb62af05dbfd8fef930959f9cebeada93557acf11218b5d9798f59f4de565cec7b86c03410d7bf68249ccd5f86625095