Overview
overview
7Static
static
3VirusShare...38.exe
windows7-x64
7VirusShare...38.exe
windows10-2004-x64
7$PLUGINSDI...is.dll
windows7-x64
3$PLUGINSDI...is.dll
windows10-2004-x64
3ffRichMedi...ion.js
windows7-x64
1ffRichMedi...ion.js
windows10-2004-x64
1ff/chrome/...941.js
windows7-x64
1ff/chrome/...941.js
windows10-2004-x64
1ff/chrome/...ion.js
windows7-x64
1ff/chrome/...ion.js
windows10-2004-x64
1ie/RichMed...41.dll
windows7-x64
6ie/RichMed...41.dll
windows10-2004-x64
6uninstall.exe
windows7-x64
7uninstall.exe
windows10-2004-x64
7$PLUGINSDI...is.dll
windows7-x64
3$PLUGINSDI...is.dll
windows10-2004-x64
3Analysis
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max time kernel
145s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
04/02/2024, 16:15
Static task
static1
Behavioral task
behavioral1
Sample
VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/aminsis.dll
Resource
win7-20231215-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/aminsis.dll
Resource
win10v2004-20231222-en
Behavioral task
behavioral5
Sample
ffRichMediaViewV1release2941chaction.js
Resource
win7-20231129-en
Behavioral task
behavioral6
Sample
ffRichMediaViewV1release2941chaction.js
Resource
win10v2004-20231215-en
Behavioral task
behavioral7
Sample
ff/chrome/content/ffRichMediaViewV1release2941.js
Resource
win7-20231215-en
Behavioral task
behavioral8
Sample
ff/chrome/content/ffRichMediaViewV1release2941.js
Resource
win10v2004-20231215-en
Behavioral task
behavioral9
Sample
ff/chrome/content/ffRichMediaViewV1release2941ffaction.js
Resource
win7-20231215-en
Behavioral task
behavioral10
Sample
ff/chrome/content/ffRichMediaViewV1release2941ffaction.js
Resource
win10v2004-20231215-en
Behavioral task
behavioral11
Sample
ie/RichMediaViewV1release2941.dll
Resource
win7-20231215-en
Behavioral task
behavioral12
Sample
ie/RichMediaViewV1release2941.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral13
Sample
uninstall.exe
Resource
win7-20231129-en
Behavioral task
behavioral14
Sample
uninstall.exe
Resource
win10v2004-20231222-en
Behavioral task
behavioral15
Sample
$PLUGINSDIR/aminsis.dll
Resource
win7-20231129-en
Behavioral task
behavioral16
Sample
$PLUGINSDIR/aminsis.dll
Resource
win10v2004-20231222-en
General
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Target
VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe
-
Size
657KB
-
MD5
f4cf00ca6e52d151fa796044e6ec4f38
-
SHA1
4a056e5e9fe1fdbfd6424be32db162a04e5fdb31
-
SHA256
c0223074078ab6f1dbd4fd845911bb4e0fbdfb3ce7c5f64295e69a9f62a375c3
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SHA512
5779442888d135dadc64039fac777f95107c1773cbfa83e74d898884b54cf30e7c23d1bba13d8b8a5b26cdc1834493d68ffd18b9fb846e928d6c8ecb1b04ab64
-
SSDEEP
12288:YNUUG4GQTq4OaQQTYJ8eP4/L5uO7D3f5B06q4WarQTwJ8ePB/p5uO71U26eBy:YNUUG4GQm4OaHYJ8eP4D5uOHBB0P4Wag
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe -
Loads dropped DLL 2 IoCs
pid Process 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 2136 regsvr32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Installs/modifies Browser Helper Object 2 TTPs 3 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\{72bbe8ce-3b01-438a-b737-2be5790a5d07} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\ = "RichMediaViewV1release2941" regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\NoExplorer = "1" regsvr32.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe -
Drops file in Program Files directory 22 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\icons\Thumbs.db VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ie\RichMediaViewV1release2941.dll VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\install.rdf VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\ffRichMediaViewV1release2941.js VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\overlay.xul VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\ffRichMediaViewV1release2941.js VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\icons\Thumbs.db VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\overlay.xul VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\icons\default VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ch\RichMediaViewV1release2941.crx VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome.manifest VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\ffRichMediaViewV1release2941ffaction.js VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\ffRichMediaViewV1release2941ffaction.js VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\icons VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\icons\default\RichMediaViewV1release2941_32.png VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome\content\icons\default\RichMediaViewV1release2941_32.png VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ch\RichMediaViewV1release2941.crx VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome.manifest VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\install.rdf VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File opened for modification C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ff\chrome VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe File created C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\uninstall.exe VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Internet Explorer\Approved Extensions VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe Set value (data) \REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Internet Explorer\Approved Extensions\{72bbe8ce-3b01-438a-b737-2be5790a5d07} = 51667a6c4c1d3b1bdef4aa623e6de107a83e69a57a4f1d1c VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe -
Modifies registry class 36 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\ = "RichMediaViewV1release2941Lib" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\InprocServer32\ = "C:\\Program Files (x86)\\RichMediaViewV1\\RichMediaViewV1release2941\\ie\\RichMediaViewV1release2941.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\ = "IRichMediaViewV1release2941BHO" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\TypeLib\ = "{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\TypeLib\ = "{fcdaec5c-287e-47e7-ac5c-a2de0d2922d2}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07} VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\ = "Rich Media View" VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\0\win32\ = "C:\\Program Files (x86)\\RichMediaViewV1\\RichMediaViewV1release2941\\ie\\RichMediaViewV1release2941.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\Version\ = "1.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\HELPDIR\ = "C:\\Program Files (x86)\\RichMediaViewV1\\RichMediaViewV1release2941\\ie" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\ = "RichMediaViewV1release2941" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\TypeLib\Version = "1.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\TypeLib\Version = "1.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07}\Version regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}\1.1\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\TypeLib\ = "{FCDAEC5C-287E-47E7-AC5C-A2DE0D2922D2}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{33F03F09-900B-4A0D-A42E-39EE20858B6A}\ = "IRichMediaViewV1release2941BHO" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72bbe8ce-3b01-438a-b737-2be5790a5d07} regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4740 wrote to memory of 2136 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 85 PID 4740 wrote to memory of 2136 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 85 PID 4740 wrote to memory of 2136 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 85 PID 4740 wrote to memory of 4396 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 88 PID 4740 wrote to memory of 4396 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 88 PID 4740 wrote to memory of 4396 4740 VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe"C:\Users\Admin\AppData\Local\Temp\VirusShare_f4cf00ca6e52d151fa796044e6ec4f38.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4740 -
C:\Windows\SysWOW64\regsvr32.exeregsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2941\ie\RichMediaViewV1release2941.dll" /s2⤵
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2136
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C:\Windows\SysWOW64\gpupdate.exe"C:\Windows\System32\gpupdate.exe" /force2⤵PID:4396
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:756
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:1604
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
85KB
MD502123778d68ae8e7227c13181f5128cb
SHA129b5364f1d2fc2c15c6dcb1222ccad54202e20c2
SHA25623c7bcb661bdfd76c37203561bcddaaca8246fb24ba8c1f573ef35ef98f2d98d
SHA51220c31d31d8a81468a0c017011286d0e1e2e16af07bf0b5588781bb6abe4ad36644ec48787d3c972b8c028461e3144ef833aad1a4c958e72accb1040b3efe3e19
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Filesize
567KB
MD5450753ad96785a240a39deccab3af0d0
SHA121c544064d2ffa6444508268ce258a330d459fc5
SHA2561c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3
SHA512c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab