5cf9d83d7f8193ceba7f1ec91b5a3d3e72adc3c391f10bcd3069083f62195764

General

Target
5cf9d83d7f8193ceba7f1ec91b5a3d3e72adc3c391f10bcd3069083f62195764.dll
Size 928KB
Sample260729-ed1c4atdpf
SHA256 5cf9d83d7f8193ceba7f1ec91b5a3d3e72adc3c391f10bcd3069083f62195764
MD5 f6cc9749e549e4dbc991c8655bd2f143
SHA1 324000719eeda835ffc071c29d5a0952a662f9a9
SHA512 27656885bc9901892ef8714265e1f0ac51c877e7f7fcaccc26c8724f96334c07a0ec5237396a21a60e75ac1c644959b622507a4968988ecec8b61a41b9db76da
SSDEEP 12288:gvhaaUEe18fHbsIwBuXEaUEe18fHbsIwu9qfydzPcDoSB:gvhzHPwAHPwZaVcEi
TLSH
T16E15F810A2DA90B2F5B39B700DBFE2392B3A79118676CF1FD704D51C1B72B81AD61726
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\1.3.6.1.4.1.311.16.4\FuncName = "EncodeRecipientID"	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\2.5.29.32\FuncName = "FormatVerisignExtension"	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\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\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\CryptDllDecodeObject\1.3.6.1.4.1.311.16.4\Dll = "cryptdlg.dll"	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\Certificate\{7801EBD0-CF4B-11D0-851F-0060979387EA}\$DLL = "wintrust.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\CryptDllEncodeObject\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\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}\$DLL = "cryptdlg.dll"	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\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\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\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}\$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

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 5980 wrote to memory of 4740	5980	regsvr32.exe	89

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\5cf9d83d7f8193ceba7f1ec91b5a3d3e72adc3c391f10bcd3069083f62195764.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:5980
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\5cf9d83d7f8193ceba7f1ec91b5a3d3e72adc3c391f10bcd3069083f62195764.dll
  2⤵
  - Manipulates Digital Signatures
  - System Location Discovery: System Language Discovery
  PID:4740