2b90e389578f65caca0148d3e79eeb9bdafadb8345267033a0603a98dfd7d7ed

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/05/2024, 10:24

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General

Target

$SYSDIR/PAZU.dll
Size

193KB
MD5

f41f9c5a2a3c123aee141f3562d9799f
SHA1

d3501f807f8070a7432ec482e2b4e03d02a20f53
SHA256

de49fb40338aa5798989fae866e4d2d1e03aa6a301b151d6b58f5c37e679e52a
SHA512

b1387785fe0c86579cf92c9366ca19c6c60d156dd5c92aaba3d3de10655f7d457ac2f83b8926067ec644cd648a5f0abfda6b7b7b743675da281f98c090e49463
SSDEEP

3072:GCDuNfFP8wjJhyOdLzEAV+tgkceP1ftykAcoFCxscbkaHse48bP4bCgID/S91s/k:GhLzE6kcettykfocoyn0mNW

Score

1^/10

Malware Config

Signatures

Modifies registry class 64 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1FF8A1DB-BB5E-4440-8DFD-723F28A0EC5F}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E902957A-23B4-440C-893B-62204D3C8F75}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{353C6DCD-C12E-415A-83A0-D2753ACE10AD}\ProxyStubClsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\TypeLib\Version = "33c.d"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1D337E0F-C57A-4B47-9B5E-C0CD51770793}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{A74A00A1-640E-4D88-BBE1-385A25FAAA4D}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81CEEC84-6A85-480E-918D-F311331769FB}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C72885D2-9FDD-4FA5-A692-91C7D7A920AA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{A2414229-96EE-476D-8F26-4E134D89C7E8}\Forward\ = "{3A51A793-4C61-4D0A-BB6B-2335413CFF0D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E902957A-23B4-440C-893B-62204D3C8F75}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7BD58C9-AD19-409E-A5DB-B39C20861300}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3A51A793-4C61-4D0A-BB6B-2335413CFF0D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B46140BD-6C6B-4EE6-9026-2431F8F9CECC}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1D337E0F-C57A-4B47-9B5E-C0CD51770793}\ProxyStubClsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7BD58C9-AD19-409E-A5DB-B39C20861300}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PAZU.CPrinter\ = "PAZU.CPrinter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{BACE040A-9869-46C0-A771-A209ADF4823D}\ = "GaoFei"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6DB6D0E6-3B6D-44DC-BEFF-B685D3CF6FC6}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E2376A8-405C-4794-847C-32B0467E16A3}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{2A759DC0-54D1-4158-BBCA-300104351954}\Forward\ = "{81CEEC84-6A85-480E-918D-F311331769FB}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{56FFA6A7-FD27-466A-B335-610C2B60FB24}\Forward	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{8CA703E2-B2B6-4FD8-8176-DD138DF21F56}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7BD58C9-AD19-409E-A5DB-B39C20861300}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B46140BD-6C6B-4EE6-9026-2431F8F9CECC}\Forward	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{A74A00A1-640E-4D88-BBE1-385A25FAAA4D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{69028594-A8DE-4F16-9263-22E9A4252565}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7C8CB06B-7A46-42B6-8848-162826E2ED26}\Forward\ = "{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3A51A793-4C61-4D0A-BB6B-2335413CFF0D}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B46140BD-6C6B-4EE6-9026-2431F8F9CECC}\ = "CWin"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5C2611B7-D978-4512-928E-66FAE6F36C93}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E2376A8-405C-4794-847C-32B0467E16A3}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2E2376A8-405C-4794-847C-32B0467E16A3}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AF33188F-6656-4549-99A6-E394F0CE4EA4}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}\33c.d\FLAGS\ = "2"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81CEEC84-6A85-480E-918D-F311331769FB}\ = "_CPrinter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C72885D2-9FDD-4FA5-A692-91C7D7A920AA}\ = "GaoFei"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B46140BD-6C6B-4EE6-9026-2431F8F9CECC}\ProxyStubClsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{A74A00A1-640E-4D88-BBE1-385A25FAAA4D}\ProxyStubClsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2CBFC27-91DB-4B78-9760-B6C0338E51ED}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6DB6D0E6-3B6D-44DC-BEFF-B685D3CF6FC6}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BF6338E8-5B65-476C-80DE-65FED0D58207}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1D337E0F-C57A-4B47-9B5E-C0CD51770793}\Forward\ = "{81CEEC84-6A85-480E-918D-F311331769FB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{8CA703E2-B2B6-4FD8-8176-DD138DF21F56}\Forward\ = "{3A51A793-4C61-4D0A-BB6B-2335413CFF0D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E902957A-23B4-440C-893B-62204D3C8F75}\Forward\ = "{3A51A793-4C61-4D0A-BB6B-2335413CFF0D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7BD58C9-AD19-409E-A5DB-B39C20861300}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6DB6D0E6-3B6D-44DC-BEFF-B685D3CF6FC6}\TypeLib\ = "{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{449628C0-A1E0-4517-8F86-99EA69533A49}\Forward\ = "{81CEEC84-6A85-480E-918D-F311331769FB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AF33188F-6656-4549-99A6-E394F0CE4EA4}\VERSION\ = "828.13"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{A2414229-96EE-476D-8F26-4E134D89C7E8}\Forward	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E902957A-23B4-440C-893B-62204D3C8F75}\ProxyStubClsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{DB74E627-EF9B-4D6D-A7FB-0082199AA7A8}\33c.d\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81CEEC84-6A85-480E-918D-F311331769FB}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6DB6D0E6-3B6D-44DC-BEFF-B685D3CF6FC6}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1FF8A1DB-BB5E-4440-8DFD-723F28A0EC5F}\ = "CPrinter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PAZU.GaoFei\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1FF8A1DB-BB5E-4440-8DFD-723F28A0EC5F}\Forward\ = "{81CEEC84-6A85-480E-918D-F311331769FB}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{353C6DCD-C12E-415A-83A0-D2753ACE10AD}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{353C6DCD-C12E-415A-83A0-D2753ACE10AD}\ = "GaoFei"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28
PID 1712 wrote to memory of 2352	1712	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\PAZU.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\PAZU.dll
  2⤵
  - Modifies registry class
  PID:2352

Analysis

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Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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