Analysis
- user interaction
yes - max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
07/08/2026, 17:21
Static task
static1
Behavioral task
behavioral1
Sample
Tax Notice.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
15 signatures
150 seconds
Behavioral task
behavioral2
Sample
Tax Notice.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
14 signatures
150 seconds
General
- Target Tax Notice.exe
- Size 25.3MB
- Sample260807-vxgcbshr4x
- SHA256 749c688bc6049b650c31c956c86b269844ebb3e55939f8b99bf8f90a59cc4218
- MD5 b4244b9f2684275fab4192b04f378b62
- SHA1 6ae839ed1dbc48d54b5c03f5634e8cf91480b3a1
- SHA512 4dfb2045aaee7ce1be1d59b23a18063fa491936ece23a4aa55fb67be08c8096d25fb82f121fb936336bafa0f06307044eefb7acf7a5afee7a1bcf915e14e760b
- SSDEEP 786432:KOAoS1wzATG+rjPYwVB5i/OotaLWy01c80lawntf6:nAoS6AqaJVG/OogLScJlj6
- TLSH T10F4733629DF97815CEF11D339AEF674AE1E6B840EC7864D15EC27C62933ECE4082A435
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- UAC bypass 3 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" rdclient.exe - Drops file in System32 directory 16 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\30069012ED3CF5DB92F9F4FC78D55E2D_87238437CEFCADF00F1385E31A888EF4 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\30069012ED3CF5DB92F9F4FC78D55E2D_87238437CEFCADF00F1385E31A888EF4 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\538F535B7FBDE384E456CC9F5DA5FBAB rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\949AE42F2E1940677F52E2DFF8C7AE5F rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4E4160FB650E5091C535216313A4ECD3_A1607DA90539F9DA502DD0E00C008DE9 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\949AE42F2E1940677F52E2DFF8C7AE5F rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\4E4160FB650E5091C535216313A4ECD3_A1607DA90539F9DA502DD0E00C008DE9 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\538F535B7FBDE384E456CC9F5DA5FBAB rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 rdclient.exe - Executes dropped EXE 2 IoCs
pid Process 3128 rdservice.exe 3048 rdclient.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 4868 cmd.exe - System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rdservice.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rdclient.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Tax Notice.exe - System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4868 cmd.exe 2356 PING.EXE - Modifies data under HKEY_USERS 50 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPublisher rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPublisher\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPublisher\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates rdclient.exe - Modifies system certificate store 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D3DD483E2BBF4C05E8AF10F5FA7626CFD3DC3092 rdclient.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D3DD483E2BBF4C05E8AF10F5FA7626CFD3DC3092\Blob = 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 rdclient.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D3DD483E2BBF4C05E8AF10F5FA7626CFD3DC3092\Blob = 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 rdclient.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 2356 PING.EXE - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3484 Tax Notice.exe 3484 Tax Notice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3048 rdclient.exe 3048 rdclient.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe 3128 rdservice.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3128 rdservice.exe Token: SeDebugPrivilege 3128 rdservice.exe Token: SeDebugPrivilege 3048 rdclient.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3048 rdclient.exe 3048 rdclient.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3484 wrote to memory of 4868 3484 Tax Notice.exe 86 PID 3128 wrote to memory of 3048 3128 rdservice.exe 88 PID 4868 wrote to memory of 2356 4868 cmd.exe 89 - System policy modification 1 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System rdclient.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" rdclient.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Tax Notice.exe"C:\Users\Admin\AppData\Local\Temp\Tax Notice.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3484 -
C:\Windows\SysWOW64\cmd.execmd /c ping -n 2 127.0.0.1 >nul 2>&1 && del /f /q "C:\Users\Admin\AppData\Local\Temp\Tax Notice.exe"2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4868 -
C:\Windows\SysWOW64\PING.EXEping -n 2 127.0.0.13⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:2356
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C:\ProgramData\host\rdservice.exe"C:\ProgramData\host\rdservice.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3128 -
C:\ProgramData\host\rdclient.exeC:\ProgramData\host\rdclient.exe quiet2⤵
- UAC bypass
- Drops file in System32 directory
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:3048
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Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3Subvert Trust Controls
1Install Root Certificate
1Replay Monitor
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Downloads
- Path C:\ProgramData\Microsoft\Crypto\RSA\S-1-5-18\10656d52b977a4e12d54cc0fc58b5286_c3d0e1da-bcea-48f7-86a8-212b4e5f9c90
- Size 50B
- SHA256 915305b55d5ac9f4d91f17348a5270ee0e95b0c4664b7a46b8e01be074067570
- MD5 2dc3a8e654526e41bc21f8139c901feb
- SHA1 f81583073d6a3f289ced4bc3b2bb5278ea9d571a
- SHA512 5568fffdd9136405369647a34766cfe1da6dc90ecdd77034624c2bb89a8cce6850ccf22b16cb7a73af522cc69fbe72e1bfdf89203cb6dc67899898b75a12d89a
- MD5 SHA1 SHA512
- Path C:\ProgramData\host\cfg.ini
- Size 171B
- SHA256 7f49d9c3239199bfd6a8923bff31a43025751a6665c74ce4666acdcee6c2e9b0
- MD5 9d44c5fe8fb486ffb1fd97c1f7b123f2
- SHA1 4ba0db13f49a1b39f0af1322eb1c733cf521cf00
- SHA512 2f1d764d1982378bd49cd1b5a66d5079d89b1a33cf7a42333138336f13dbf447bbc03e796c3a08c588600c7aefe4ca0ae3a4c9b4b69333aa08c86da359156ee7
- TLSH T156C08015E55AB19155FD112C804745988682FF047E279844549444C5ED6C1F2270A91D
- MD5 SHA1 SHA512 TLSH
- Path C:\ProgramData\host\host.dat
- Size 130B
- SHA256 43701a2a1571ce9419b9b3c3634f61e2b815dd9e48c6cc5468b974c11d1dad05
- MD5 f6990bb8c71d597791ae22fa9aaf3635
- SHA1 41e3234d200b0ee56da2135c33bddfe4de24a806
- SHA512 312663cee5d8a97559108de5875772e65f8648e09608e01e0079b809935a84b5a388905055e520763e708841147fe4f843ca7df156c46ff72d66d72aac1cd0d3
- TLSH T1A8C02208EE28CC00E2C8A3088880FE30A02C3A2C80A208AE22282320030880C00AA30E
- MD5 SHA1 SHA512 TLSH
- Path C:\ProgramData\host\rdclient.exe
- Size 34.2MB
- SHA256 cc91fa509ce19e67a421173704e016892df4089ab494de894a8c5de52d17e857
- MD5 3eb6505bcac48acf0fbac10b01a95ba7
- SHA1 be22bfa934d534733ae6dedab44fa357c1602f57
- SHA512 8a882f6d8c6a2c59d82253ee25529cadaa075b19f9227132728870a0fba25edab5087642002efd7ee482b6699a5506c63816ba29cd63c3025de5686bca906cd9
- SSDEEP 786432:/6edC7FF54V7TYk6UBc4TQpAJUrsBSjpZr/LWwDp6:/6uC7FF54lTmUq4smJUlpZrTWwDp6
- TLSH T18977F103B280A03AD8671B3A9C3BE295193FBE216A259C4777B87D4C5F3A7407D29747
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\ProgramData\host\rdservice.exe
- Size 2.5MB
- SHA256 7ed2a077a1ce34fcb182e5135ae75ad7bd96207c3204c9f343095f967bfa109f
- MD5 db3d3a7f82f0c7afb258a98c50a66a36
- SHA1 8cc26bec161dc58472e848c427310ae396520f88
- SHA512 73b54dc39fbb512054168ad59acaf00b2177138091869f6df46a8fa24b98e977092617cc89d32cad5690f8e930715352003adde7d3a0ac9a1c9fcb942f62471e
- SSDEEP 24576:dEGJjsQPX8V/vLGUFAyzEVSg1F2+kkROf4pY7DH7cpFVBqSRg/lIhu/WST5V2tSw:Ts8Xi3LdFb0MR7uVASC/rWSrU3
- TLSH T127C55B23B2D9653ED06B173A5827B6145C3BB7A13A2A9C0797F4084C9F296C13E3B747
- MD5 SHA1 SHA512 SSDEEP TLSH