712916ede6bb83832d617032a91ee0c0c691e76072510e08c0f844404a2dda7f

Analysis

max time kernel
149s
max time network
97s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
04/06/2026, 12:17

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General

Target
srpclib.dll
Size 60KB
Sample260604-pgdcvad181
SHA256 712916ede6bb83832d617032a91ee0c0c691e76072510e08c0f844404a2dda7f
MD5 e037fe34f8b85a2dc7804f4852e8c1c2
SHA1 5271fc11353fa002357a2e2071df759dd5a270e7
SHA512 719c26dc8b8f3bf9e01aa48258f62e1b0ee760a42b99f14df614f719db1bf07b292face73145fd0398db49d97edadb04ce6c6008a11e58387b29db76c1b1d61c
SSDEEP 1536:f62mzUMNQlZk+5IoKd493ugalkPzR/qP5F5uUA1AQx2q:f62xFlZk+5IoKd4wJ5F5uUA1A61
TLSH
T14853F723BBEAC03BD29A05754B57E7FD08296C520F41E24F3689F39E1E32E416526627
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ECD90FE4-ADCD-48FC-94F6-AE70053C8C22}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{30E4D290-3F2D-439D-93ED-EF200C25F600}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.UInteger\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6420834B-9FE1-48BD-8212-DF9F829936FE}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F0D9C7C7-A245-4E0E-961D-E0F4A02E6E0F}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{295C47D7-663B-43E4-9C73-8731FDEF03E3}\ProgID\ = "SpamratLibrary.SRPC_INI"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{295C47D7-663B-43E4-9C73-8731FDEF03E3}\TypeLib\ = "{39F0722E-2665-4EF2-8F29-E9B9849570A3}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.SRPC_Library\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{39F0722E-2665-4EF2-8F29-E9B9849570A3}\7.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6420834B-9FE1-48BD-8212-DF9F829936FE}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\srpclib.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.ULong\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{34D01547-4666-418A-A3DF-9E0311CED792}\ProxyStubClsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DE8013BA-FF22-40A3-B3E6-3882B1269D52}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2099B92B-0514-4535-89BB-4D200EBD64A4}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2099B92B-0514-4535-89BB-4D200EBD64A4}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34D01547-4666-418A-A3DF-9E0311CED792}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{30E4D290-3F2D-439D-93ED-EF200C25F600}\ = "_ULong"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2455CD38-E169-4157-9E10-EDA03DD75C14}\ = "SpamratLibrary.UInteger"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6420834B-9FE1-48BD-8212-DF9F829936FE}\VERSION\ = "7.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7225196D-5197-42DD-AEB1-5A0120EA5E32}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{295C47D7-663B-43E4-9C73-8731FDEF03E3}\ = "SpamratLibrary.SRPC_INI"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{39F0722E-2665-4EF2-8F29-E9B9849570A3}\7.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ECD90FE4-ADCD-48FC-94F6-AE70053C8C22}\ = "_SRPC_INI"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F0D9C7C7-A245-4E0E-961D-E0F4A02E6E0F}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{667725E8-1CEE-4087-822B-19A5D57C0EEA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6420834B-9FE1-48BD-8212-DF9F829936FE}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7225196D-5197-42DD-AEB1-5A0120EA5E32}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8E6162F8-26F4-4452-9F13-AB6E316F6306}\VERSION\ = "7.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{295C47D7-663B-43E4-9C73-8731FDEF03E3}\VERSION\ = "7.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{667725E8-1CEE-4087-822B-19A5D57C0EEA}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2455CD38-E169-4157-9E10-EDA03DD75C14}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{39F0722E-2665-4EF2-8F29-E9B9849570A3}\7.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\srpclib.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F0D9C7C7-A245-4E0E-961D-E0F4A02E6E0F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F0D9C7C7-A245-4E0E-961D-E0F4A02E6E0F}\TypeLib\ = "{39F0722E-2665-4EF2-8F29-E9B9849570A3}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{34D01547-4666-418A-A3DF-9E0311CED792}\TypeLib\Version = "7.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{30E4D290-3F2D-439D-93ED-EF200C25F600}\TypeLib\Version = "7.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DE8013BA-FF22-40A3-B3E6-3882B1269D52}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ECD90FE4-ADCD-48FC-94F6-AE70053C8C22}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{34D01547-4666-418A-A3DF-9E0311CED792}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34D01547-4666-418A-A3DF-9E0311CED792}\ = "_SRPC_INI_Section"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{30E4D290-3F2D-439D-93ED-EF200C25F600}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6420834B-9FE1-48BD-8212-DF9F829936FE}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.ULong\ = "SpamratLibrary.ULong"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7225196D-5197-42DD-AEB1-5A0120EA5E32}\VERSION\ = "7.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.SRPC_INI_Entry\ = "SpamratLibrary.SRPC_INI_Entry"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2099B92B-0514-4535-89BB-4D200EBD64A4}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ECD90FE4-ADCD-48FC-94F6-AE70053C8C22}\ = "_SRPC_INI"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{34D01547-4666-418A-A3DF-9E0311CED792}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{30E4D290-3F2D-439D-93ED-EF200C25F600}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7225196D-5197-42DD-AEB1-5A0120EA5E32}\ = "SpamratLibrary.SRPC_INI_Section"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{39F0722E-2665-4EF2-8F29-E9B9849570A3}\7.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7225196D-5197-42DD-AEB1-5A0120EA5E32}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8E6162F8-26F4-4452-9F13-AB6E316F6306}\ = "SpamratLibrary.SRPC_INI_Entry"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F0D9C7C7-A245-4E0E-961D-E0F4A02E6E0F}\ = "SRPC_INI_Entry"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DE8013BA-FF22-40A3-B3E6-3882B1269D52}\ = "SpamratLibrary.SRPC_Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.SRPC_Library	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ECD90FE4-ADCD-48FC-94F6-AE70053C8C22}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ECD90FE4-ADCD-48FC-94F6-AE70053C8C22}\TypeLib\ = "{39F0722E-2665-4EF2-8F29-E9B9849570A3}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F0D9C7C7-A245-4E0E-961D-E0F4A02E6E0F}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{667725E8-1CEE-4087-822B-19A5D57C0EEA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6420834B-9FE1-48BD-8212-DF9F829936FE}\ProgID\ = "SpamratLibrary.ULong"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DE8013BA-FF22-40A3-B3E6-3882B1269D52}\VERSION	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2099B92B-0514-4535-89BB-4D200EBD64A4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SpamratLibrary.UInteger\Clsid\ = "{2455CD38-E169-4157-9E10-EDA03DD75C14}"	regsvr32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 4412	2960	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\srpclib.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\srpclib.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:4412

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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