Analysis
- max time kernel
165s - max time network
167s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
10/09/2026, 04:33
Static task
static1
Behavioral task
behavioral1
Sample
税務報告書.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
15 signatures
150 seconds
Behavioral task
behavioral2
Sample
税務報告書.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
14 signatures
150 seconds
General
- Target 税務報告書.exe
- Size 25.3MB
- Sample260910-e6n6jafr7y
- SHA256 6a27a63285ae06e6d0004dc2ccefed9c0b4232fc0f419c95501b9e1f3d444e18
- MD5 05ea3e31e62042d5c9d886ec77c6f2e1
- SHA1 42102cf8eb28bf5b1e1555a9a29a98ea9c6a18e3
- SHA512 fc6d8250715fd53ab64ba542dfc5f6a56ef83cfeda9aa8b24751ced9c60853649c9785d31329c264b97433b471cb0dfcc73c1e141fc8fe9b3fa56038a28638a4
- SSDEEP 393216:SQSNdWkNeM2YtcmSwhzCaOXDgACAuZLNZ8Qg1RaVNqjzWfRSlj1fJTgww4FYggRf:St5DtV/Cc9isVNqjqfRij1fpNjFYx
- TLSH T12C47337DA60057B8FA04C4BDE9334D14BB0D651EA5217CA24A0E64DA3363AFED5783BC
- 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 8 IoCs
description ioc Process 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\30069012ED3CF5DB92F9F4FC78D55E2D_87238437CEFCADF00F1385E31A888EF4 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\MetaData\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\30069012ED3CF5DB92F9F4FC78D55E2D_87238437CEFCADF00F1385E31A888EF4 rdclient.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4E4160FB650E5091C535216313A4ECD3_A1607DA90539F9DA502DD0E00C008DE9 rdclient.exe - Executes dropped EXE 3 IoCs
pid Process 3252 rdservice.exe 2528 rdclient.exe 5372 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 4692 cmd.exe - System Location Discovery: System Language Discovery 1 TTPs 6 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 税務報告書.exe 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 rdclient.exe - System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4692 cmd.exe 900 PING.EXE - Modifies data under HKEY_USERS 49 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPublisher\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates 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\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPublisher\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\Microsoft\SystemCertificates\Disallowed\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs rdclient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates rdclient.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 900 PING.EXE - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4080 税務報告書.exe 4080 税務報告書.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 2528 rdclient.exe 2528 rdclient.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 3252 rdservice.exe 2528 rdclient.exe 2528 rdclient.exe 3252 rdservice.exe 3252 rdservice.exe 2528 rdclient.exe 2528 rdclient.exe 2528 rdclient.exe 2528 rdclient.exe 3252 rdservice.exe 3252 rdservice.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3252 rdservice.exe Token: SeDebugPrivilege 3252 rdservice.exe Token: SeDebugPrivilege 2528 rdclient.exe Token: SeDebugPrivilege 2528 rdclient.exe - Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 2528 rdclient.exe 2528 rdclient.exe 5372 rdclient.exe 5372 rdclient.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4080 wrote to memory of 4692 4080 税務報告書.exe 90 PID 4692 wrote to memory of 900 4692 cmd.exe 92 PID 3252 wrote to memory of 2528 3252 rdservice.exe 93 - System policy modification 1 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" rdclient.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System rdclient.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\税務報告書.exe"C:\Users\Admin\AppData\Local\Temp\税務報告書.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4080 -
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\税務報告書.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:4692 -
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:900
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-
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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:3252 -
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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:2528
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C:\ProgramData\host\rdclient.exe"C:\ProgramData\host\rdclient.exe" plugin1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:5372
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
2Replay Monitor
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Downloads
- Path C:\ProgramData\Microsoft\Crypto\RSA\S-1-5-18\bc0e39738cf8ce14e5060f697fbf7aa7_664c2b74-2189-4fdf-aeef-891b4de0bda7
- Size 50B
- SHA256 787c3f54fa4ea1c578ae89f4e172e92c193b5ec34e1c00c4433a8db3a908ffbb
- MD5 b1de3a5448680e0601bad7b6896b3a7c
- SHA1 c9d9a7040c68321a454629844a064fec329c79d9
- SHA512 68a4fa440eeec120921f27d802e6aaab641f65275a249d6713990eab098195f4d5295e68e9e6d0ea5b5b970c93456d6d03319eb2452b6ba703a3f00a1137db7d
- 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 24.2MB
- SHA256 fbd1c4542c3e7dff95e72733a16815e457cb437e06991f21fb09bf7271ace8ac
- MD5 b493bbd1f3a3a169461a02bf220ec3b6
- SHA1 f3304ed51f45af1c0eef7c77957beb69bad36c4c
- SHA512 86b2fcc3243bde3bbe21c55d3c742fad5b563c04d6b9a219270217024672900229f0e826f34c635050e4a468ad06070d33173e7fcee5aadaf90efc33b781b059
- SSDEEP 393216:3gOGWXPUvKx72yH44OrEsawep5U/eimN0X/TyzwRRL+sx0EXWQUFsXm:3PvUm72yY1Hawe3imOPTowRgsFXuam
- TLSH T1C947334672FF02D5CEE692FC23988D0B93C994CB599464EB1AC11E2DD3930BBA5D01F6
- 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