File name:

PDFixers.exe

Full analysis: https://app.any.run/tasks/e147e759-14da-4763-b031-8a877d984bec
Verdict: Malicious activity
Threats:

Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns.

Analysis date: September 13, 2024, 19:58:06
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
stealer
Indicators:
MIME: application/x-dosexec
File info: PE32+ executable (GUI) x86-64 Mono/.Net assembly, for MS Windows
MD5:

B4440EEA7367C3FB04A89225DF4022A6

SHA1:

5A6C01F821F10F6ED1F1283ECBA36C5BACFB5838

SHA256:

A024A18E27707738ADCD7B5A740C5A93534B4B8C9D3B947F6D85740AF19D17D0

SSDEEP:

98304:NKaPGf3Lx51clR43g0ZtKC5/TF4i9bYvQCPjhPXq2fZWwZmchG6QjvOr/av7Vx6U:Lm3qrzPw0jtrQp

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

    • Actions looks like stealing of personal data

      • SumatraPDF-3.5.2-64.exe (PID: 6532)
      • CompatTelRunner.exe (PID: 2484)
  • SUSPICIOUS

    • Reads Microsoft Outlook installation path

      • PDFixers.exe (PID: 4976)
    • Reads security settings of Internet Explorer

      • PDFixers.exe (PID: 4976)
      • SumatraPDF-3.5.2-64.exe (PID: 6532)
    • Searches for installed software

      • PDFixers.exe (PID: 4976)
      • CompatTelRunner.exe (PID: 2484)
    • Reads the date of Windows installation

      • PDFixers.exe (PID: 4976)
    • Checks Windows Trust Settings

      • PDFixers.exe (PID: 4976)
    • Creates a software uninstall entry

      • PDFixers.exe (PID: 4976)
    • Reads Internet Explorer settings

      • PDFixers.exe (PID: 4976)
    • Executable content was dropped or overwritten

      • PDFixers.exe (PID: 4976)
    • Adds/modifies Windows certificates

      • CompatTelRunner.exe (PID: 2484)
  • INFO

    • Checks supported languages

      • PDFixers.exe (PID: 4976)
      • SumatraPDF-3.5.2-64.exe (PID: 6532)
    • Reads the computer name

      • PDFixers.exe (PID: 4976)
      • SumatraPDF-3.5.2-64.exe (PID: 6532)
    • Creates files or folders in the user directory

      • PDFixers.exe (PID: 4976)
      • SumatraPDF-3.5.2-64.exe (PID: 6532)
    • Checks proxy server information

      • PDFixers.exe (PID: 4976)
    • The process uses the downloaded file

      • PDFixers.exe (PID: 4976)
    • Process checks computer location settings

      • PDFixers.exe (PID: 4976)
    • Reads CPU info

      • SumatraPDF-3.5.2-64.exe (PID: 6532)
    • Reads the machine GUID from the registry

      • PDFixers.exe (PID: 4976)
      • SumatraPDF-3.5.2-64.exe (PID: 6532)
    • Reads the software policy settings

      • PDFixers.exe (PID: 4976)
      • CompatTelRunner.exe (PID: 2484)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic Win/DOS Executable (50)
.exe | DOS Executable Generic (49.9)

EXIF

EXE

MachineType: AMD AMD64
TimeStamp: 2054:11:16 06:26:21+00:00
ImageFileCharacteristics: Executable, Large address aware
PEType: PE32+
LinkerVersion: 80
CodeSize: 8382976
InitializedDataSize: 112128
UninitializedDataSize: -
EntryPoint: 0x0000
OSVersion: 4
ImageVersion: -
SubsystemVersion: 6
Subsystem: Windows GUI
FileVersionNumber: 1.0.0.0
ProductVersionNumber: 1.0.0.0
FileFlagsMask: 0x003f
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
Comments: -
CompanyName: -
FileDescription: Pdfixers
FileVersion: 1.0.0.0
InternalName: Pdfixers.exe
LegalCopyright: Copyright © 2023
LegalTrademarks: -
OriginalFileName: Pdfixers.exe
ProductName: Pdfixers
ProductVersion: 1.0.0.0
AssemblyVersion: 1.0.0.0
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
133
Monitored processes
3
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
start pdfixers.exe sumatrapdf-3.5.2-64.exe compattelrunner.exe

Process information

PID
CMD
Path
Indicators
Parent process
2484C:\WINDOWS\system32\compattelrunner.exe -m:aeinv.dll -f:UpdateSoftwareInventoryWC:\Windows\System32\CompatTelRunner.exe
svchost.exe
User:
SYSTEM
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Microsoft Compatibility Telemetry
Exit code:
0
Version:
10.0.19645.1102 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\compattelrunner.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
4976"C:\Users\admin\AppData\Local\Temp\PDFixers.exe" C:\Users\admin\AppData\Local\Temp\PDFixers.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Pdfixers
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\pdfixers.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
6532"C:\Users\admin\AppData\Roaming\SumatraPDF\SumatraPDF-3.5.2-64.exe" C:\Users\admin\AppData\Roaming\SumatraPDF\SumatraPDF-3.5.2-64.exe
PDFixers.exe
User:
admin
Company:
Krzysztof Kowalczyk
Integrity Level:
MEDIUM
Description:
SumatraPDF
Version:
3.5.2
Modules
Images
c:\users\admin\appdata\roaming\sumatrapdf\sumatrapdf-3.5.2-64.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\gdi32full.dll
c:\windows\system32\msvcp_win.dll
Total events
35 115
Read events
34 974
Write events
129
Delete events
12

Modification events

(PID) Process:(4976) PDFixers.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
(PID) Process:(4976) PDFixers.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(4976) PDFixers.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
(PID) Process:(4976) PDFixers.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDFUninstall
Operation:writeName:DisplayName
Value:
SumatraPDF
(PID) Process:(4976) PDFixers.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDFUninstall
Operation:writeName:UninstallString
Value:
cmd /c rmdir /s /q "C:\Users\admin\AppData\Roaming\SumatraPDF" & del "C:\Users\admin\Desktop\SumatraPDF.lnk" & reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDFUninstall /f
(PID) Process:(6532) SumatraPDF-3.5.2-64.exeKey:HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\BagMRU
Operation:writeName:NodeSlots
Value:
020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202
(PID) Process:(6532) SumatraPDF-3.5.2-64.exeKey:HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\BagMRU
Operation:writeName:MRUListEx
Value:
0400000000000000030000000E0000000F0000000C0000000D0000000B000000050000000A000000090000000800000001000000070000000600000002000000FFFFFFFF
(PID) Process:(6532) SumatraPDF-3.5.2-64.exeKey:HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\4
Operation:writeName:MRUListEx
Value:
040000000000000005000000020000000100000003000000FFFFFFFF
(PID) Process:(6532) SumatraPDF-3.5.2-64.exeKey:HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\Bags\119\Shell
Operation:writeName:SniffedFolderType
Value:
Documents
(PID) Process:(6532) SumatraPDF-3.5.2-64.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
Operation:writeName:GlobalAssocChangedCounter
Value:
93
Executable files
1
Suspicious files
11
Text files
4
Unknown types
3

Dropped files

PID
Process
Filename
Type
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12der
MD5:7FB5FA1534DCF77F2125B2403B30A0EE
SHA256:33A39E9EC2133230533A686EC43760026E014A3828C703707ACBC150FE40FD6F
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8binary
MD5:CA610AFC4809729720050DEF169AEBB5
SHA256:D75D2BCEAB5E56EE8DB7B823E21FFDFB5978F05364F1071915237C332C230868
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B3513D73A177A2707D910183759B389B_2F09F384AB04F931E2EF39FD04145E2Fbinary
MD5:A60DD4647E6737A65E5A51EEC6130834
SHA256:B6AF9E983CB20A51B872836A6D51BF901A7ECD465FE08E53E3400CE0A30706F9
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\05DDC6AA91765AACACDB0A5F96DF8199binary
MD5:C9EFA78AB52CD57D586F50D7D1882795
SHA256:3035F6B00FA9542CE8A4993FED3F078152ED0DB27D093B48EC6F6341CACE930F
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8der
MD5:971C514F84BBA0785F80AA1C23EDFD79
SHA256:F157ED17FCAF8837FA82F8B69973848C9B10A02636848F995698212A08F31895
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C02877841121CC45139CB51404116B25_193C88518F770D3F8D3CDA4F180E8635binary
MD5:4FC6DD1945C6BC2A767D979E02525E43
SHA256:2417B07746034621C8BECAFD58DE9A1BA5C390B9062C7FA94CBF86681EEEFD96
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C02877841121CC45139CB51404116B25_193C88518F770D3F8D3CDA4F180E8635binary
MD5:0DBB27292FECBDCF2715D42D635168F7
SHA256:10237B443BD4E5252FDDCFE8B4EA2439AFEC4094972174B973DB327639915954
4976PDFixers.exeC:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\IE\KCV3KQBA\font[1].eoteot
MD5:C6B85601ADBF8C674B4B444DAD696A5D
SHA256:EC8671B432FF49E1E77F48692397E57ECFA584555AC664C932DCCEA0C9A16044
4976PDFixers.exeC:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\IE\KCV3KQBA\email-decode.min[1].jsbinary
MD5:9E8F56E8E1806253BA01A95CFC3D392C
SHA256:2595496FE48DF6FCF9B1BC57C29A744C121EB4DD11566466BC13D2E52E6BBCC8
4976PDFixers.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12binary
MD5:8D98E421BED622C2B4EDA6F9B16033B9
SHA256:3764FB835FE8AE688C8853067C17AFE98E1A029C86A5A2AAE40536DF7E89BE24
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
10
TCP/UDP connections
49
DNS requests
22
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
4976
PDFixers.exe
GET
200
142.250.185.163:80
http://c.pki.goog/r/gsr1.crl
unknown
whitelisted
4976
PDFixers.exe
GET
200
142.250.185.163:80
http://c.pki.goog/r/r1.crl
unknown
whitelisted
4976
PDFixers.exe
GET
200
142.250.185.163:80
http://c.pki.goog/r/r4.crl
unknown
whitelisted
4976
PDFixers.exe
GET
200
142.250.185.163:80
http://o.pki.goog/wr2/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRTQtSEi8EX%2BbYUTXd8%2ByMxD3s1zQQU3hse7XkV1D43JMMhu%2Bw0OW1CsjACEGs31zQSL0RFCna%2BsoPon%2Bg%3D
unknown
whitelisted
4976
PDFixers.exe
GET
200
142.250.185.163:80
http://o.pki.goog/wr2/MFIwUDBOMEwwSjAJBgUrDgMCGgUABBRTQtSEi8EX%2BbYUTXd8%2ByMxD3s1zQQU3hse7XkV1D43JMMhu%2Bw0OW1CsjACEQDBBI61buTJSxBPkvvajAV6
unknown
whitelisted
4760
svchost.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
whitelisted
3708
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
whitelisted
3292
SIHClient.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
whitelisted
3292
SIHClient.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
whitelisted
1492
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D
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
4
System
192.168.100.255:138
whitelisted
4760
svchost.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
6224
RUXIMICS.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
2120
MoUsoCoreWorker.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
4976
PDFixers.exe
104.21.11.17:443
pixel.pdfixers.com
CLOUDFLARENET
unknown
4976
PDFixers.exe
142.250.185.163:80
c.pki.goog
GOOGLE
US
whitelisted
4976
PDFixers.exe
216.58.206.74:443
fonts.googleapis.com
GOOGLE
US
whitelisted
4976
PDFixers.exe
142.250.181.227:443
fonts.gstatic.com
GOOGLE
US
whitelisted
4760
svchost.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4760
svchost.exe
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.124.78.146
  • 51.104.136.2
  • 4.231.128.59
whitelisted
google.com
  • 142.250.186.142
whitelisted
pixel.pdfixers.com
  • 104.21.11.17
  • 172.67.147.142
unknown
c.pki.goog
  • 142.250.185.163
whitelisted
fonts.googleapis.com
  • 216.58.206.74
whitelisted
o.pki.goog
  • 142.250.185.163
whitelisted
fonts.gstatic.com
  • 142.250.181.227
whitelisted
www.microsoft.com
  • 184.30.21.171
whitelisted
client.wns.windows.com
  • 40.113.110.67
whitelisted
login.live.com
  • 20.190.160.17
  • 40.126.32.74
  • 20.190.160.20
  • 20.190.160.22
  • 40.126.32.134
  • 40.126.32.140
  • 40.126.32.68
  • 40.126.32.136
  • 20.190.160.14
  • 40.126.32.76
  • 40.126.32.138
whitelisted

Threats

No threats detected
No debug info