665a949fd9d5737ed0b6c56e07a101766f3536e71697c4ebbd55de4a959ac791

General

Target
665a949fd9d5737ed0b6c56e07a101766f3536e71697c4ebbd55de4a959ac791.dll
Size 52KB
Sample260717-13vd2abs4x
SHA256 665a949fd9d5737ed0b6c56e07a101766f3536e71697c4ebbd55de4a959ac791
MD5 6b13eb2f3bf3d1c4bfa2cb928c117949
SHA1 f423805b6f689bafbfc318e28972a8f09a8f6aed
SHA512 65f8d0f5e452cad708b32be61a6dd4f3de290c92e13ae8186048bc26292b8de80efcd69f2079d9d1ee8d7b9735ccdb6e901dc36c8dcf3a3c4da4bbd609e194db
SSDEEP 768:E+icOIJcnYsguLw1vTSqhagFlDo3xqXBv:nikJcnYsguLw1bhhagt
TLSH
T1A3338402A7E96E55F6FB2B31B87E21390D3BBA792B74C8DF1102865C0D21ED09971763
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

discovery

Malware Config

Signatures

Manipulates Digital Signatures 1 TTPs 22 IoCs

Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to make their binary seem validly signed.

SIP and Trust Provider Hijacking

T1553.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllEncodeObject\1.3.6.1.4.1.311.16.1.1\FuncName = "EncodeAttrSequence"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllDecodeObject\1.3.6.1.4.1.311.16.1.1\Dll = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllFormatObject\2.5.29.32\FuncName = "FormatVerisignExtension"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\Certificate\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$DLL = "wintrust.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\CertCheck\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$DLL = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\Cleanup\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$DLL = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\Cleanup\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$Function = "CertTrustCleanup"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllDecodeObject\1.3.6.1.4.1.311.16.1.1\FuncName = "DecodeAttrSequence"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllEncodeObject\1.3.6.1.4.1.311.16.4\Dll = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllFormatObject\1.3.6.1.5.5.7.3.4\Dll = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllFormatObject\1.3.6.1.5.5.7.3.4\FuncName = "FormatPKIXEmailProtection"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllFormatObject\2.5.29.32\Dll = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\Certificate\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$Function = "WintrustCertificateTrust"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\CertCheck\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$Function = "CertTrustCertPolicy"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\FinalPolicy\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$DLL = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllEncodeObject\1.3.6.1.4.1.311.16.4\FuncName = "EncodeRecipientID"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllDecodeObject\1.3.6.1.4.1.311.16.4\Dll = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllDecodeObject\1.3.6.1.4.1.311.16.4\FuncName = "DecodeRecipientID"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\Initialization\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$DLL = "cryptdlg.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\Initialization\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$Function = "CertTrustInit"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\Trust\FinalPolicy\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$Function = "CertTrustFinalPolicy"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllEncodeObject\1.3.6.1.4.1.311.16.1.1\Dll = "cryptdlg.dll"	regsvr32.exe

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

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 3180	3288	regsvr32.exe	87

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\665a949fd9d5737ed0b6c56e07a101766f3536e71697c4ebbd55de4a959ac791.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\665a949fd9d5737ed0b6c56e07a101766f3536e71697c4ebbd55de4a959ac791.dll
  2⤵
  - Manipulates Digital Signatures
  - System Location Discovery: System Language Discovery
  PID:3180