Overview
overview
7Static
static
3gnbsetupcn.exe
windows7-x64
7gnbsetupcn.exe
windows10-2004-x64
7$PLUGINSDI...ns.dll
windows7-x64
3$PLUGINSDI...ns.dll
windows10-2004-x64
3gnblock.dll
windows7-x64
6gnblock.dll
windows10-2004-x64
6gnblock_tmp.dll
windows7-x64
6gnblock_tmp.dll
windows10-2004-x64
6language/s...se.dll
windows7-x64
1language/s...se.dll
windows10-2004-x64
1language/s...mp.dll
windows7-x64
1language/s...mp.dll
windows10-2004-x64
1新云软件.url
windows7-x64
1新云软件.url
windows10-2004-x64
1Analysis
-
max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01/07/2024, 18:28
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
gnbsetupcn.exe
Resource
win7-20240221-en
windows7-x64
2 signatures
150 seconds
Behavioral task
behavioral2
Sample
gnbsetupcn.exe
Resource
win10v2004-20240508-en
windows10-2004-x64
1 signatures
150 seconds
Behavioral task
behavioral3
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win7-20231129-en
windows7-x64
2 signatures
150 seconds
Behavioral task
behavioral4
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20240508-en
windows10-2004-x64
2 signatures
150 seconds
Behavioral task
behavioral5
Sample
gnblock.dll
Resource
win7-20240221-en
windows7-x64
4 signatures
150 seconds
Behavioral task
behavioral6
Sample
gnblock.dll
Resource
win10v2004-20240508-en
windows10-2004-x64
4 signatures
150 seconds
Behavioral task
behavioral7
Sample
gnblock_tmp.dll
Resource
win7-20240611-en
windows7-x64
4 signatures
150 seconds
Behavioral task
behavioral8
Sample
gnblock_tmp.dll
Resource
win10v2004-20240508-en
windows10-2004-x64
4 signatures
150 seconds
Behavioral task
behavioral9
Sample
language/simpchinese.dll
Resource
win7-20240508-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral10
Sample
language/simpchinese.dll
Resource
win10v2004-20240226-en
windows10-2004-x64
0 signatures
150 seconds
Behavioral task
behavioral11
Sample
language/simpchinese_tmp.dll
Resource
win7-20240611-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral12
Sample
language/simpchinese_tmp.dll
Resource
win10v2004-20240508-en
windows10-2004-x64
0 signatures
150 seconds
Behavioral task
behavioral13
Sample
新云软件.url
Resource
win7-20240221-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral14
Sample
新云软件.url
Resource
win10v2004-20240508-en
windows10-2004-x64
0 signatures
150 seconds
General
-
Target
gnblock_tmp.dll
-
Size
160KB
-
MD5
a8602cf572c56291c7b8453667dc1525
-
SHA1
603bc73c4764008b8d7c7fe7020a2cbe3748738b
-
SHA256
9e16fb96e14bb8a799f4a8c998b59d2175baf17f1e954a11b90826f34afd8699
-
SHA512
e8ae4840f729d99d4fc3924a4385c018aac257379a247ade26bb0080a3a17a37245ff245b6d500095f43fc06fb741d004735045bb15a34daf5e39cad9c8ba20d
-
SSDEEP
3072:6516mHmVUKq2U7YxSle9kfEnAZJ1Uj2wKhXq1Y:6fzmHU7Ygl1BUtKMm
Malware Config
Signatures
-
Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{12B2281A-9E7C-46a1-962C-0ADC94821D8D} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{12B2281A-9E7C-46a1-962C-0ADC94821D8D}\ = "GN Ad Blocker" regsvr32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" regsvr32.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Internet Explorer\Main regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" regsvr32.exe -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BD872880-59FA-4860-9136-F26C54B8FFF5}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{12B2281A-9E7C-46a1-962C-0ADC94821D8D} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNMimeFilter\CLSID\ = "{5179159F-AC9A-4028-BFD5-4AC45A570912}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FD189F19-DECF-4ECC-84D8-DCADBD0E023D}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNMimeFilter.1\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BD872880-59FA-4860-9136-F26C54B8FFF5}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNHttpFilter\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNMimeFilter.1\ = "GN MimeFilter Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FD189F19-DECF-4ECC-84D8-DCADBD0E023D}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\ = "IGNHttpFilter" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{12B2281A-9E7C-46a1-962C-0ADC94821D8D}\ProgID\ = "GNAdBlocker.GNAdBlocker.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BD872880-59FA-4860-9136-F26C54B8FFF5}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{12B2281A-9E7C-46a1-962C-0ADC94821D8D}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker.1\ = "GNAdBlocker Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNHttpFilter\ = "GN HttpFilter Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656}\ = "GN HttpFilter Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNMimeFilter.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\ProgID\ = "GNAdBlocker.GNMimeFilter.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{12B2281A-9E7C-46a1-962C-0ADC94821D8D}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\GNYOKAdBlocker.GNHttpFilter.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656}\InprocServer32\ThreadingModel = "both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BD872880-59FA-4860-9136-F26C54B8FFF5}\ = "IGNAdBlocker" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker\CLSID\ = "{12B2281A-9E7C-46a1-962C-0ADC94821D8D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNYOKAdBlocker.GNHttpFilter.1\CLSID\ = "{66E22522-472B-4902-923A-CAEE08BB9656}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\ = "GN MimeFilter Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\ = "IGNHttpFilter" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gnblock_tmp.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BD872880-59FA-4860-9136-F26C54B8FFF5}\TypeLib\ = "{FD189F19-DECF-4ECC-84D8-DCADBD0E023D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E}\TypeLib\ = "{FD189F19-DECF-4ECC-84D8-DCADBD0E023D}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FD189F19-DECF-4ECC-84D8-DCADBD0E023D} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FD189F19-DECF-4ECC-84D8-DCADBD0E023D}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FD189F19-DECF-4ECC-84D8-DCADBD0E023D}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{66E22522-472B-4902-923A-CAEE08BB9656}\VersionIndependentProgID\ = "GNAdBlocker.GNHttpFilter" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\InprocServer32\ThreadingModel = "both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNAdBlocker.1\CLSID\ = "{12B2281A-9E7C-46a1-962C-0ADC94821D8D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\GNAdBlocker.GNHttpFilter\CLSID\ = "{66E22522-472B-4902-923A-CAEE08BB9656}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BD872880-59FA-4860-9136-F26C54B8FFF5}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{71F40DC5-1EEC-49A3-A7B2-4A0334F81789}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0E479FF7-6295-4067-AB8B-AC67CC35040E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{12B2281A-9E7C-46a1-962C-0ADC94821D8D}\VersionIndependentProgID\ = "GNAdBlocker.GNAdBlocker" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\VersionIndependentProgID\ = "GNAdBlocker.GNMimeFilter" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5179159F-AC9A-4028-BFD5-4AC45A570912}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gnblock_tmp.dll" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3900 wrote to memory of 3440 3900 regsvr32.exe 81 PID 3900 wrote to memory of 3440 3900 regsvr32.exe 81 PID 3900 wrote to memory of 3440 3900 regsvr32.exe 81
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\gnblock_tmp.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3900 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\gnblock_tmp.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:3440
-