Analysis
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max time kernel
147s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
08/03/2023, 08:11
Behavioral task
behavioral1
Sample
ARC_KS9201027011CL.doc
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
ARC_KS9201027011CL.doc
Resource
win10v2004-20230220-en
General
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Target
ARC_KS9201027011CL.doc
-
Size
543.3MB
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MD5
b13b243434b3d4b186026fa3d3fdba9a
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SHA1
c11e836318755c06db5a18c54892e3cccf279da8
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SHA256
3fd0964eb74075e3431e27920ccdb2d6edffa8b8c2dac307a20f183d72e0cbdd
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SHA512
12564274a8b44887b8cce27abb8e5778e07514beaf3bd11b70bf8f779f912f8a584c555c90c49727868978a07c97c408a699a1a812558fb109954e660f3129e5
-
SSDEEP
6144:xPn4VZXbatu7MDogsDkHS50LdfcGcbz1f5M9KTFrMpSlMK3Ru+Q28:xP4PbNMkgg3Ru+x
Malware Config
Extracted
emotet
Epoch4
129.232.188.93:443
164.90.222.65:443
159.65.88.10:8080
172.105.226.75:8080
115.68.227.76:8080
187.63.160.88:80
169.57.156.166:8080
185.4.135.165:8080
153.126.146.25:7080
197.242.150.244:8080
139.59.126.41:443
186.194.240.217:443
103.132.242.26:8080
206.189.28.199:8080
163.44.196.120:8080
95.217.221.146:8080
159.89.202.34:443
119.59.103.152:8080
183.111.227.137:8080
201.94.166.162:443
103.75.201.2:443
149.56.131.28:8080
79.137.35.198:8080
5.135.159.50:443
66.228.32.31:7080
91.121.146.47:8080
153.92.5.27:8080
45.235.8.30:8080
72.15.201.15:8080
107.170.39.149:8080
45.176.232.124:443
82.223.21.224:8080
167.172.199.165:8080
213.239.212.5:443
202.129.205.3:8080
94.23.45.86:4143
147.139.166.154:8080
167.172.253.162:8080
91.207.28.33:8080
188.44.20.25:443
104.168.155.143:8080
110.232.117.186:8080
164.68.99.3:8080
1.234.2.232:8080
173.212.193.249:8080
182.162.143.56:443
160.16.142.56:8080
101.50.0.91:8080
103.43.75.120:443
Signatures
-
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\WINWORD.EXE is not expected to spawn this process 4452 3852 regsvr32.exe 68 -
Loads dropped DLL 2 IoCs
pid Process 4452 regsvr32.exe 2068 regsvr32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ztCmLuWfEOS.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\YyCjsZNuDi\\ztCmLuWfEOS.dll\"" regsvr32.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 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 34 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 3852 WINWORD.EXE 3852 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4452 regsvr32.exe 4452 regsvr32.exe 2068 regsvr32.exe 2068 regsvr32.exe 2068 regsvr32.exe 2068 regsvr32.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE 3852 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3852 wrote to memory of 4452 3852 WINWORD.EXE 90 PID 3852 wrote to memory of 4452 3852 WINWORD.EXE 90 PID 4452 wrote to memory of 2068 4452 regsvr32.exe 93 PID 4452 wrote to memory of 2068 4452 regsvr32.exe 93
Processes
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\ARC_KS9201027011CL.doc" /o ""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
PID:3852 -
C:\Windows\System32\regsvr32.exe"C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\082307.tmp"2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4452 -
C:\Windows\system32\regsvr32.exeC:\Windows\system32\regsvr32.exe "C:\Windows\system32\YyCjsZNuDi\ztCmLuWfEOS.dll"3⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
PID:2068
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
517.7MB
MD59b1e551cd585f8166cd937f2a0980f81
SHA115fd840efab66b5b385992882a57aa06eb84cb1d
SHA256cfad0dcd5988f2f30d91b4c51bf68ff571ec988393934ecd7bcb876163f5ea66
SHA512a1f633a81871cd972cb7f3d90cad12a536798e2239e8c5488409c8c2ab503187563e9a7779f48f665487536ba1cfbf0daa6bd52055ac87d7cb52bfd56588f430
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Filesize
517.7MB
MD59b1e551cd585f8166cd937f2a0980f81
SHA115fd840efab66b5b385992882a57aa06eb84cb1d
SHA256cfad0dcd5988f2f30d91b4c51bf68ff571ec988393934ecd7bcb876163f5ea66
SHA512a1f633a81871cd972cb7f3d90cad12a536798e2239e8c5488409c8c2ab503187563e9a7779f48f665487536ba1cfbf0daa6bd52055ac87d7cb52bfd56588f430
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Filesize
853KB
MD5fb9e96b0881ea74a860c2d22e9f80272
SHA1c807383bc031f7e7ef247c3d6bda284a6163ba8d
SHA25661e4713129e7466ba4986cbbc1cfe05464439f5a6c3a67590d3be59cc46b29cc
SHA512ed7045dcc833f8318f4741061f4a7c2570cfe5ad93645670d508b9c428ffb838cb54de979690e2feb15d06ed3166c06730a52edfdf4831309513b6f8295b34d0
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Filesize
517.7MB
MD59b1e551cd585f8166cd937f2a0980f81
SHA115fd840efab66b5b385992882a57aa06eb84cb1d
SHA256cfad0dcd5988f2f30d91b4c51bf68ff571ec988393934ecd7bcb876163f5ea66
SHA512a1f633a81871cd972cb7f3d90cad12a536798e2239e8c5488409c8c2ab503187563e9a7779f48f665487536ba1cfbf0daa6bd52055ac87d7cb52bfd56588f430