File name:

libcurl.dll

Full analysis: https://app.any.run/tasks/caa68196-8f86-445c-a590-da654b39f629
Verdict: Malicious activity
Analysis date: November 02, 2024, 10:17:12
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
exploit
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows, 5 sections
MD5:

D3C9064911CE5602558DB534C85BDAFC

SHA1:

79D09176BD6AC86346CF4968455174262A8B580D

SHA256:

F451119A4F30B4CDA90F79F3D0199B0FFAD5103DAE9584B172A44D8BD8E18F00

SSDEEP:

6144:SK49r0nOFQJ8itMxFHPvjUP9EVRxyMSEmnfV1H:JYHa8itMfvvY81Lmnfb

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • EXPLOIT has been detected (SURICATA)

      • SearchApp.exe (PID: 4360)

  • SUSPICIOUS

    • Executes application which crashes

      • rundll32.exe (PID: 2432)

  • INFO

    • Create files in a temporary directory

      • rundll32.exe (PID: 2432)

    • Checks proxy server information

      • WerFault.exe (PID: 5276)

    • Reads the software policy settings

      • WerFault.exe (PID: 5276)

    • Checks supported languages

      • SearchApp.exe (PID: 4360)

    • Creates files or folders in the user directory

      • WerFault.exe (PID: 5276)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win64 Executable (generic) (64.6)
.dll | Win32 Dynamic Link Library (generic) (15.4)
.exe | Win32 Executable (generic) (10.5)
.exe | Generic Win/DOS Executable (4.6)
.exe | DOS Executable Generic (4.6)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2024:10:31 16:35:01+00:00
ImageFileCharacteristics: Executable, 32-bit, DLL
PEType: PE32
LinkerVersion: 14.41
CodeSize: 13824
InitializedDataSize: 151040
UninitializedDataSize: -
EntryPoint: 0x3a05
OSVersion: 6
ImageVersion: -
SubsystemVersion: 6
Subsystem: Windows GUI
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
141
Monitored processes
6
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start rundll32.exe no specs rundll32.exe werfault.exe #EXPLOIT searchapp.exe sppextcomobj.exe no specs slui.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2432"C:\Windows\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\libcurl.dll, #1C:\Windows\SysWOW64\rundll32.exe
rundll32.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows host process (Rundll32)
Exit code:
3221225477
Version:
10.0.19041.3636 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\rundll32.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\aclayers.dll
4360"C:\WINDOWS\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mcaC:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Search application
Version:
10.0.19041.3996 (WinBuild.160101.0800)
Modules
Images
c:\windows\systemapps\microsoft.windows.search_cw5n1h2txyewy\searchapp.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\wincorlib.dll
4548C:\WINDOWS\system32\SppExtComObj.exe -EmbeddingC:\Windows\System32\SppExtComObj.Exe—svchost.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
KMS Connection Broker
Version:
10.0.19041.3996 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\sppextcomobj.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\oleaut32.dll
5276C:\WINDOWS\SysWOW64\WerFault.exe -u -p 2432 -s 612C:\Windows\SysWOW64\WerFault.exe
rundll32.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Problem Reporting
Exit code:
0
Version:
10.0.19041.3996 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\werfault.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\msvcrt.dll
c:\windows\syswow64\combase.dll
6112"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEventC:\Windows\System32\slui.exe—SppExtComObj.Exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Windows Activation Client
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
6220"C:\Windows\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\libcurl.dll, #1C:\Windows\System32\rundll32.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows host process (Rundll32)
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\rundll32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\shcore.dll
c:\windows\system32\imagehlp.dll
Total events
4 314
Read events
4 285
Write events
29
Delete events
0

Modification events

(PID) Process:(4360) SearchApp.exeKey:\REGISTRY\A\{96200786-8ea1-d57b-2177-28c9e0c39da0}\LocalState\ConstraintIndex
Operation:writeName:CurrentConstraintIndexCabPath
Value:
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
(PID) Process:(4360) SearchApp.exeKey:\REGISTRY\A\{96200786-8ea1-d57b-2177-28c9e0c39da0}\LocalState\AppsConstraintIndex
Operation:writeName:LatestConstraintIndexFolder
Value:
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
(PID) Process:(4360) SearchApp.exeKey:\REGISTRY\A\{96200786-8ea1-d57b-2177-28c9e0c39da0}\LocalState\AppsConstraintIndex
Operation:writeName:LastConstraintIndexBuildCompleted
Value:
D4F44566102DDB0140C04466102DDB01
(PID) Process:(4360) SearchApp.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Search\Microsoft.Windows.Search_cw5n1h2txyewy\AppsConstraintIndex
Operation:writeName:CurrentConstraintIndexCabPath
Value:
C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Input_{832b68d2-7fe2-4e71-a3ad-26166b656ec6}
(PID) Process:(4360) SearchApp.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Search\Microsoft.Windows.Search_cw5n1h2txyewy\AppsConstraintIndex
Operation:writeName:LatestConstraintIndexFolder
Value:
C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ce753ced-1da9-400f-9b08-f10e0ff23a23}
(PID) Process:(4360) SearchApp.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\SearchSettings
Operation:writeName:SafeSearchMode
Value:
1
(PID) Process:(4360) SearchApp.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Search\Microsoft.Windows.Search_cw5n1h2txyewy\AppsConstraintIndex
Operation:writeName:IndexedLanguage
Value:
en-US
(PID) Process:(4360) SearchApp.exeKey:\REGISTRY\A\{96200786-8ea1-d57b-2177-28c9e0c39da0}\LocalState\AppIndexer
Operation:writeName:LatestCacheFileName
Value:
410070007000430061006300680065003100330033003700350030003100360032003300340037003000390036003100300037002E00740078007400000040C04466102DDB01
(PID) Process:(4360) SearchApp.exeKey:\REGISTRY\A\{96200786-8ea1-d57b-2177-28c9e0c39da0}\LocalState\AppIndexer
Operation:writeName:InstalledWin32AppsRevision
Value:
7B00360037003600310030003000320031002D0045003400460030002D0034003900450041002D0038003000420044002D003000440042004400340039003400440044003000350045007D00000040C04466102DDB01
(PID) Process:(4360) SearchApp.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Feeds\DSB
Operation:writeName:DynamicText
Value:
Executable files
0
Suspicious files
7
Text files
126
Unknown types
0

Dropped files

PID
Process
Filename
Type
5276WerFault.exeC:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_rundll32.exe_2ee9827d5c3281ef1bd032185e89f26811bbbd5_67c333ae_59e3019a-ffe3-467d-a89d-65a45d4ba630\Report.wer —
MD5:—
SHA256:—
2432rundll32.exeC:\Users\admin\AppData\Local\Temp\gup.xmlxml
MD5:116878A2647BCC21FA7EE6D9EBF3126C
SHA256:3A8C12E021D292232AEFBC93985316902E3901C455E88330ACEDF56C358AA951
5276WerFault.exeC:\ProgramData\Microsoft\Windows\WER\Temp\WERB232.tmp.dmpdmp
MD5:56A6510C46A2699ADAAA99C9BC5F2DDE
SHA256:2F313A47BB69BA2A7BAE652CB266E06855D81066ED8BC8B72236C337AB7F034A
5276WerFault.exeC:\ProgramData\Microsoft\Windows\WER\Temp\WERB724.tmp.WERInternalMetadata.xmlxml
MD5:554830B83B7FA00A1C4147F693465154
SHA256:529F8FC31D0B4ED2AC041F2D1F5A9973A9994A2B3DF9C83AA6B7783DEE828A12
5276WerFault.exeC:\ProgramData\Microsoft\Windows\WER\Temp\WERB783.tmp.xmlxml
MD5:6CA0DB126B2CD47D40BE07EABAFCC8A6
SHA256:9D3EF2AE8B5EDFAC3A64AB9D74C0F7D8F2874B6313F779D1C3DE42B863A83CED
4360SearchApp.exeC:\Users\admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ce753ced-1da9-400f-9b08-f10e0ff23a23}\0.1.filtertrie.intermediate.txttext
MD5:34BD1DFB9F72CF4F86E6DF6DA0A9E49A
SHA256:8E1E6A3D56796A245D0C7B0849548932FEE803BBDB03F6E289495830E017F14C
4360SearchApp.exeC:\Users\admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ce753ced-1da9-400f-9b08-f10e0ff23a23}\0.2.filtertrie.intermediate.txttext
MD5:C204E9FAAF8565AD333828BEFF2D786E
SHA256:D65B6A3BF11A27A1CED1F7E98082246E40CF01289FD47FE4A5ED46C221F2F73F
4360SearchApp.exeC:\Users\admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ce753ced-1da9-400f-9b08-f10e0ff23a23}\Apps.ftbinary
MD5:AB5CF5D309581951ACE7978FF8DF0FF0
SHA256:CA45CAA7DE38CB805EC43EDC8B9332E1E95124A27FBB6E5BD3DDD5E8A526AFC7
5276WerFault.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\37C951188967C8EB88D99893D9D191FEder
MD5:F0CF5B1794ECA7CD73F9C020DAAB8EF2
SHA256:2AF00EDCE7EF3266897E52DC81E8DE3B7A079028C0F1F96EAFF9E38AD342F617
5276WerFault.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\37C951188967C8EB88D99893D9D191FEbinary
MD5:561E87E65309A83D268ADBFF818E80CA
SHA256:D2A2674E497F94898A5DBD42187F44C2B446404B6D1DB50B01A0C6016E961E95
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
44
DNS requests
23
Threats
1

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D
unknown
—
—
whitelisted
5276
WerFault.exe
GET
200
2.16.164.112:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
5276
WerFault.exe
GET
200
23.32.185.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
6944
svchost.exe
GET
200
2.16.164.112:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
6944
svchost.exe
GET
200
23.32.185.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
632
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
6268
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D
unknown
—
—
whitelisted
6556
SIHClient.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
6556
SIHClient.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
6944
svchost.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
6908
RUXIMICS.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
5488
MoUsoCoreWorker.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4360
SearchApp.exe
2.23.209.176:443
www.bing.com
Akamai International B.V.
GB
whitelisted
—
—
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
5276
WerFault.exe
13.89.179.12:443
watson.events.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
whitelisted
5276
WerFault.exe
2.16.164.112:80
crl.microsoft.com
Akamai International B.V.
NL
whitelisted
5276
WerFault.exe
23.32.185.131:80
www.microsoft.com
AKAMAI-AS
BR
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.104.136.2
  • 4.231.128.59
whitelisted
www.bing.com
  • 2.23.209.176
  • 2.23.209.140
  • 2.23.209.177
  • 2.23.209.149
  • 2.23.209.158
  • 2.23.209.161
  • 2.23.209.133
  • 2.23.209.150
  • 2.23.209.135
  • 2.23.209.130
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
google.com
  • 142.250.186.110
whitelisted
watson.events.data.microsoft.com
  • 13.89.179.12
whitelisted
crl.microsoft.com
  • 2.16.164.112
  • 2.16.164.51
  • 2.16.164.74
  • 2.16.164.113
whitelisted
www.microsoft.com
  • 23.32.185.131
  • 23.35.229.160
whitelisted
login.live.com
  • 20.190.160.22
  • 40.126.32.74
  • 40.126.32.133
  • 40.126.32.68
  • 40.126.32.138
  • 40.126.32.76
  • 40.126.32.134
  • 40.126.32.140
whitelisted
th.bing.com
  • 2.23.209.185
  • 2.23.209.130
  • 2.23.209.140
  • 2.23.209.133
  • 2.23.209.187
  • 2.23.209.182
  • 2.23.209.135
  • 2.23.209.189
  • 2.23.209.149
whitelisted
go.microsoft.com
  • 184.28.89.167
whitelisted

Threats

PID
Process
Class
Message
—
—
Potentially Bad Traffic
ET EXPLOIT Possible OpenSSL HeartBleed Large HeartBeat Response from Common SSL Port (Outbound from Client)
No debug info
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Reports
libcurl.dll