URL:

https://www.google.com/search?q=%D8%B3%D9%88%D8%B1%D8%A9+%D8%A7%D9%84%D8%A8%D8%B1%D9%88%D8%AC+%D9%85%D9%83%D8%AA%D9%88%D8%A8%D8%A9+%D9%83%D8%A7%D9%85%D9%84%D8%A9+%D8%A8%D8%A7%D9%84%D8%AA%D8%B4%D9%83%D9%8A%D9%84&hl=fr&gbv=2&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjDoJru0cfzAhUEzoUKHVzDBsUQ_AUIBigB&biw=1423&bih=770

Full analysis: https://app.any.run/tasks/fcb338ed-28dc-4415-b605-82849830e7f9
Verdict: Malicious activity
Threats:

Gootkit is an advanced banking trojan. It is extremely good at evading detection and has an incredibly effective persistence mechanism, making it a dangerous malware that researchers and organizations should be aware of.

Analysis date: October 19, 2021, 23:38:34
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
banker
gootkit
Indicators:
MD5:

62F8313EC4E0A2AECB7263E9736B637C

SHA1:

0D516FC522680746B30668D1D17C59875952A2D8

SHA256:

76E7F27D1B41411CBA85D0348352AC195CBC1CEBE7535779000333C6F725F9B5

SSDEEP:

6:2OLIwBGOhbZRA0bATQbEk1AKy+A01Jnsb7mFrLNnWMkNT5A5:2V4GO1R5k8AO1y+5LMeNnTkNTY

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

    • GOOTKIT was detected

      • chrome.exe (PID: 2524)
    • Connects to CnC server

      • chrome.exe (PID: 2524)
  • SUSPICIOUS

    No suspicious indicators.
  • INFO

    • Application launched itself

      • chrome.exe (PID: 3012)
    • Checks supported languages

      • chrome.exe (PID: 3012)
      • chrome.exe (PID: 2524)
      • chrome.exe (PID: 2908)
      • chrome.exe (PID: 3848)
      • chrome.exe (PID: 2224)
      • chrome.exe (PID: 3872)
      • chrome.exe (PID: 3312)
      • chrome.exe (PID: 3780)
      • chrome.exe (PID: 3396)
      • chrome.exe (PID: 1268)
      • chrome.exe (PID: 3128)
    • Reads the hosts file

      • chrome.exe (PID: 3012)
      • chrome.exe (PID: 2524)
    • Reads the computer name

      • chrome.exe (PID: 3012)
      • chrome.exe (PID: 2224)
      • chrome.exe (PID: 2524)
      • chrome.exe (PID: 1268)
      • chrome.exe (PID: 2908)
      • chrome.exe (PID: 3872)
      • chrome.exe (PID: 3128)
    • Reads settings of System Certificates

      • chrome.exe (PID: 2524)
    • Reads the date of Windows installation

      • chrome.exe (PID: 3128)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
46
Monitored processes
11
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start chrome.exe chrome.exe no specs chrome.exe no specs #GOOTKIT chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1268"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3208 /prefetch:8C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
2224"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --gpu-preferences=MAAAAAAAAADgACAwAAAAAAAAAAAAAAAAAABgAAAAAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=1076 /prefetch:2C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\windows\system32\ntdll.dll
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
2524"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1264 /prefetch:8C:\Program Files\Google\Chrome\Application\chrome.exe
chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shlwapi.dll
2908"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --gpu-preferences=MAAAAAAAAADgACAwAAAAAAAAAAAAAAAAAABgAAAAAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --use-gl=swiftshader-webgl --mojo-platform-channel-handle=1056 /prefetch:2C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\windows\system32\ntdll.dll
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
3012"C:\Program Files\Google\Chrome\Application\chrome.exe" --disk-cache-dir=null --disk-cache-size=1 --media-cache-size=1 --disable-gpu-shader-disk-cache --disable-background-networking "https://www.google.com/search?q=%D8%B3%D9%88%D8%B1%D8%A9+%D8%A7%D9%84%D8%A8%D8%B1%D9%88%D8%AC+%D9%85%D9%83%D8%AA%D9%88%D8%A8%D8%A9+%D9%83%D8%A7%D9%85%D9%84%D8%A9+%D8%A8%D8%A7%D9%84%D8%AA%D8%B4%D9%83%D9%8A%D9%84&hl=fr&gbv=2&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjDoJru0cfzAhUEzoUKHVzDBsUQ_AUIBigB&biw=1423&bih=770"C:\Program Files\Google\Chrome\Application\chrome.exe
Explorer.EXE
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\winmm.dll
c:\windows\system32\user32.dll
3128"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3044 /prefetch:8C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
3312"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=1868 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
3396"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=1876 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\version.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
3780"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1032,1527447795102030490,1133681755582027041,131072 --enable-features=PasswordImport --lang=en-US --extension-process --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=4 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2140 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
3848"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win32 --annotation=prod=Chrome --annotation=ver=86.0.4240.198 --initial-client-data=0xc8,0xcc,0xd0,0x9c,0xd4,0x6d6ed988,0x6d6ed998,0x6d6ed9a4C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
86.0.4240.198
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\86.0.4240.198\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\api-ms-win-downlevel-shell32-l1-1-0.dll
c:\windows\system32\shell32.dll
Total events
7 273
Read events
7 213
Write events
60
Delete events
0

Modification events

(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:failed_count
Value:
0
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
2
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
01000000
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
1
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:dr
Value:
1
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome
Operation:writeName:UsageStatsInSample
Value:
0
(PID) Process:(3012) chrome.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}
Operation:writeName:usagestats
Value:
0
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:metricsid
Value:
(PID) Process:(3012) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:metricsid_installdate
Value:
0
Executable files
0
Suspicious files
16
Text files
64
Unknown types
1

Dropped files

PID
Process
Filename
Type
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\BrowserMetrics\BrowserMetrics-616F56FE-BC4.pma
MD5:
SHA256:
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.old~RF943f2.TMPtext
MD5:936EB7280DA791E6DD28EF3A9B46D39C
SHA256:CBAF2AFD831B32F6D1C12337EE5D2F090D6AE1F4DCB40B08BEF49BF52AD9721F
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Platform Notifications\LOG.old~RF94579.TMPtext
MD5:109A25C32EE1132ECD6D9F3ED9ADF01A
SHA256:DA6028DB9485C65E683643658326F02B1D0A1566DE14914EF28E5248EB94F0DD
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\LOG.oldtext
MD5:5BD3C311F2136A7A88D3E197E55CF902
SHA256:FA331915E1797E59979A3E4BCC2BD0D3DEAA039B94D4DB992BE251FD02A224B9
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Local Storage\leveldb\LOG.oldtext
MD5:7721CDA9F5B73CE8A135471EB53B4E0E
SHA256:DD730C576766A46FFC84E682123248ECE1FF1887EC0ACAB22A5CE93A450F4500
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\LOG.old~RF943f2.TMPtext
MD5:64AD8ED3E666540337BA541C549F72F7
SHA256:BECBDB08B5B37D203A85F2E974407334053BB1D2270F0B3C9A4DB963896F2206
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\feda6b17-8e50-4fd9-a879-780d921a76ec.tmptext
MD5:
SHA256:
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Preferencestext
MD5:
SHA256:
3848chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\CrashpadMetrics.pmabinary
MD5:03C4F648043A88675A920425D824E1B3
SHA256:F91DBB7C64B4582F529C968C480D2DCE1C8727390482F31E4355A27BB3D9B450
3012chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.oldtext
MD5:8FF312A95D60ED89857FEB720D80D4E1
SHA256:946A57FAFDD28C3164D5AB8AB4971B21BD5EC5BFFF7554DBF832CB58CC37700B
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
28
DNS requests
15
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2524
chrome.exe
GET
200
209.197.3.8:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?ccf19e27603e16dd
US
compressed
59.7 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2524
chrome.exe
142.250.181.238:443
clients2.google.com
Google Inc.
US
whitelisted
51.124.78.146:443
Microsoft Corporation
GB
whitelisted
2524
chrome.exe
172.217.18.109:443
accounts.google.com
Google Inc.
US
suspicious
20.73.194.208:443
settings-win.data.microsoft.com
US
whitelisted
142.250.185.67:443
fonts.gstatic.com
Google Inc.
US
whitelisted
2524
chrome.exe
142.250.185.78:443
encrypted-tbn0.gstatic.com
Google Inc.
US
whitelisted
2524
chrome.exe
142.250.185.206:443
apis.google.com
Google Inc.
US
whitelisted
142.250.186.110:443
encrypted-tbn2.gstatic.com
Google Inc.
US
whitelisted
2524
chrome.exe
142.250.185.99:443
ssl.gstatic.com
Google Inc.
US
whitelisted
2524
chrome.exe
142.250.185.195:443
www.gstatic.com
Google Inc.
US
whitelisted

DNS requests

Domain
IP
Reputation
accounts.google.com
  • 172.217.18.109
shared
www.google.com
  • 142.250.186.132
malicious
clients2.google.com
  • 142.250.181.238
whitelisted
ssl.gstatic.com
  • 142.250.185.99
whitelisted
www.gstatic.com
  • 142.250.185.195
whitelisted
settings-win.data.microsoft.com
  • 20.73.194.208
whitelisted
fonts.gstatic.com
  • 142.250.185.67
whitelisted
apis.google.com
  • 142.250.185.206
whitelisted
encrypted-tbn0.gstatic.com
  • 142.250.185.78
whitelisted
encrypted-tbn2.gstatic.com
  • 142.250.186.110
whitelisted

Threats

PID
Process
Class
Message
2524
chrome.exe
A Network Trojan was detected
ET TROJAN ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Gootkit MITM)
2524
chrome.exe
A Network Trojan was detected
AV TROJAN Observed Malicious SSL Cert (StrongPity APT CnC)
No debug info