URL:

http://download.2345.com/2345pic/2345pic_v9.1.8384.up.lm.exe

Full analysis: https://app.any.run/tasks/c1538ff9-12fe-4a37-badb-724fb869e294
Verdict: Malicious activity
Threats:

Adware is a form of malware that targets users with unwanted advertisements, often disrupting their browsing experience. It typically infiltrates systems through software bundling, malicious websites, or deceptive downloads. Once installed, it may track user activity, collect sensitive data, and display intrusive ads, including pop-ups or banners. Some advanced adware variants can bypass security measures and establish persistence on devices, making removal challenging. Additionally, adware can create vulnerabilities that other malware can exploit, posing a significant risk to user privacy and system security.

Analysis date: April 15, 2019, 05:18:41
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
loader
adware
Indicators:
MD5:

23EE284E579CF0BE98AB5B495E62459B

SHA1:

4C3262C8D0B6DAD97B50282D33B424B5E37ED26B

SHA256:

170F98322BF5F8DE2CF264D2640FA2EA71D2868C0CC4317AD9F9BBD5457D0F3E

SSDEEP:

3:N1KaKElGRQyK3GpGXfG6T65G2ACn:Ca5Hy9pkh65GnCn

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

    • Loads the Task Scheduler COM API

      • 2345PicLoader.exe (PID: 1240)
    • Application was dropped or rewritten from another process

      • 2345PicLoader.exe (PID: 1240)
      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
      • 2345pic_v9.1.8384.up.lm.exe (PID: 1560)
      • 2345PicLoader.exe (PID: 1964)
      • 2345PicUpdate.exe (PID: 3596)
      • 2345PicUpdate.exe (PID: 1500)
      • ServiceManager.exe (PID: 1336)
      • Pic_2345Svc.exe (PID: 2804)
      • 2345PicViewer.exe (PID: 1472)
      • 2345PicLoader.exe (PID: 916)
      • 2345PicUpdate.exe (PID: 1308)
      • 2345PicUpdate.exe (PID: 2444)
      • 2345PicUpdate.exe (PID: 1248)
      • 2345PicLoader.exe (PID: 2764)
      • 2345PicLoader.exe (PID: 2868)
    • Changes settings of System certificates

      • 2345PicLoader.exe (PID: 1240)
    • Downloads executable files from the Internet

      • chrome.exe (PID: 3620)
    • Loads dropped or rewritten executable

      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
      • 2345PicLoader.exe (PID: 1964)
      • 2345PicUpdate.exe (PID: 1500)
      • 2345PicUpdate.exe (PID: 3596)
      • 2345PicLoader.exe (PID: 1240)
      • Pic_2345Svc.exe (PID: 2804)
      • 2345PicViewer.exe (PID: 1472)
      • 2345PicUpdate.exe (PID: 2444)
      • 2345PicUpdate.exe (PID: 1308)
      • 2345PicLoader.exe (PID: 916)
      • 2345PicUpdate.exe (PID: 1248)
      • 2345PicLoader.exe (PID: 2764)
      • 2345PicLoader.exe (PID: 2868)
  • SUSPICIOUS

    • Application launched itself

      • 2345PicLoader.exe (PID: 1240)
    • Creates files in the user directory

      • 2345PicLoader.exe (PID: 1240)
      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
      • 2345PicUpdate.exe (PID: 1500)
      • 2345PicUpdate.exe (PID: 3596)
      • 2345PicLoader.exe (PID: 1964)
      • 2345PicViewer.exe (PID: 1472)
      • 2345PicUpdate.exe (PID: 1308)
      • 2345PicLoader.exe (PID: 916)
      • 2345PicUpdate.exe (PID: 2444)
      • 2345PicUpdate.exe (PID: 1248)
      • 2345PicLoader.exe (PID: 2764)
      • 2345PicLoader.exe (PID: 2868)
    • Adds / modifies Windows certificates

      • 2345PicLoader.exe (PID: 1240)
    • Creates COM task schedule object

      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
    • Creates a software uninstall entry

      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
    • Creates files in the program directory

      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
      • Pic_2345Svc.exe (PID: 2804)
    • Executable content was dropped or overwritten

      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
      • chrome.exe (PID: 3620)
      • chrome.exe (PID: 3360)
    • Modifies the open verb of a shell class

      • 2345PicLoader.exe (PID: 1240)
  • INFO

    • Reads settings of System Certificates

      • chrome.exe (PID: 3620)
      • 2345pic_v9.1.8384.up.lm.exe (PID: 2772)
    • Application launched itself

      • chrome.exe (PID: 3360)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
62
Monitored processes
26
Malicious processes
8
Suspicious processes
5

Behavior graph

Click at the process to see the details
drop and start drop and start start drop and start drop and start drop and start drop and start drop and start drop and start chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs 2345pic_v9.1.8384.up.lm.exe no specs 2345pic_v9.1.8384.up.lm.exe 2345picloader.exe no specs servicemanager.exe no specs 2345picloader.exe no specs 2345picupdate.exe pic_2345svc.exe no specs 2345picupdate.exe no specs chrome.exe no specs chrome.exe no specs 2345picviewer.exe 2345picloader.exe no specs 2345picupdate.exe 2345picupdate.exe 2345picupdate.exe 2345picloader.exe no specs 2345picloader.exe

Process information

PID
CMD
Path
Indicators
Parent process
352"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --field-trial-handle=952,16757165573614761929,13464838209277135556,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=utility --service-request-channel-token=1295559183487360028 --mojo-platform-channel-handle=2764 --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:
73.0.3683.75
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\73.0.3683.75\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
916"C:\Program Files\2345Soft\2345Pic\2345PicLoader.exe" -statistics o54;u104;u70C:\Program Files\2345Soft\2345Pic\2345PicLoader.exe2345pic_v9.1.8384.up.lm.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王-引擎加载程序
Exit code:
0
Version:
9.1.2.8384
Modules
Images
c:\program files\2345soft\2345pic\2345picloader.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\shell32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1080"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=952,16757165573614761929,13464838209277135556,131072 --enable-features=PasswordImport --disable-gpu-sandbox --use-gl=disabled --gpu-preferences=KAAAAAAAAACAAwAAAQAAAAAAAAAAAGAAAAAAAAEAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=3667787639575394952 --mojo-platform-channel-handle=1516 /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:
73.0.3683.75
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\73.0.3683.75\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
1240"C:\Program Files\2345Soft\2345Pic\2345PicLoader.exe" -install 6C:\Program Files\2345Soft\2345Pic\2345PicLoader.exe2345pic_v9.1.8384.up.lm.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王-引擎加载程序
Exit code:
0
Version:
9.1.2.8384
Modules
Images
c:\program files\2345soft\2345pic\2345picloader.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\shell32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1248"C:\Program Files\2345Soft\2345Pic\2345PicUpdate.exe" -SendUIStatNowC:\Program Files\2345Soft\2345Pic\2345PicUpdate.exe
2345pic_v9.1.8384.up.lm.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王-在线升级程序
Exit code:
0
Version:
9.1.2.8384
Modules
Images
c:\program files\2345soft\2345pic\2345picupdate.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\shell32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1308"C:\Program Files\2345Soft\2345Pic\2345PicUpdate.exe" -updateC:\Program Files\2345Soft\2345Pic\2345PicUpdate.exe
2345PicViewer.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王-在线升级程序
Exit code:
0
Version:
9.1.2.8384
Modules
Images
c:\program files\2345soft\2345pic\2345picupdate.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\shell32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1336"C:\Program Files\2345Soft\2345Pic\protect\ServiceManager.exe" install "C:\Program Files\2345Soft\2345Pic\protect\Pic_2345Svc.exe"C:\Program Files\2345Soft\2345Pic\protect\ServiceManager.exe2345PicLoader.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王核心服务
Exit code:
0
Version:
10.1.0.451
Modules
Images
c:\program files\2345soft\2345pic\protect\servicemanager.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\wintrust.dll
c:\windows\system32\crypt32.dll
1472"C:\Program Files\2345Soft\2345Pic\2345PicViewer.exe" -restart-picviewerC:\Program Files\2345Soft\2345Pic\2345PicViewer.exe
2345pic_v9.1.8384.up.lm.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王
Exit code:
0
Version:
9.1.2.8384
Modules
Images
c:\program files\2345soft\2345pic\2345picviewer.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1500"C:\Program Files\2345Soft\2345Pic\2345PicUpdate.exe" -update-force-configC:\Program Files\2345Soft\2345Pic\2345PicUpdate.exe
2345PicLoader.exe
User:
admin
Company:
2345移动科技
Integrity Level:
HIGH
Description:
2345看图王-在线升级程序
Exit code:
0
Version:
9.1.2.8384
Modules
Images
c:\program files\2345soft\2345pic\2345picupdate.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\shell32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1560"C:\Users\admin\Downloads\2345pic_v9.1.8384.up.lm.exe" C:\Users\admin\Downloads\2345pic_v9.1.8384.up.lm.exechrome.exe
User:
admin
Company:
2345移动科技
Integrity Level:
MEDIUM
Description:
2345看图王 v9.1 安装程序
Exit code:
3221226540
Version:
9.1.2.8384
Modules
Images
c:\users\admin\downloads\2345pic_v9.1.8384.up.lm.exe
c:\systemroot\system32\ntdll.dll
Total events
3 834
Read events
2 510
Write events
1 321
Delete events
3

Modification events

(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:failed_count
Value:
0
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
2
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
01000000
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
1
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:dr
Value:
1
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome
Operation:writeName:UsageStatsInSample
Value:
0
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:delete valueName:3488-13197474229333984
Value:
0
(PID) Process:(3360) chrome.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}
Operation:writeName:usagestats
Value:
0
(PID) Process:(3360) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:delete valueName:3360-13199779135697375
Value:
259
Executable files
49
Suspicious files
47
Text files
73
Unknown types
8

Dropped files

PID
Process
Filename
Type
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache\index
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache\data_0
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache\data_1
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache\data_2
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache\data_3
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\a736f6b4-4a34-4361-bbdc-ab43e203ff8b.tmp
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\index
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_0
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\000018.dbtmp
MD5:
SHA256:
3360chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
13
TCP/UDP connections
20
DNS requests
13
Threats
13

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
1500
2345PicUpdate.exe
POST
200
42.62.30.187:80
http://update.pic.2345.com/pic/cloud/index.php
CN
text
242 b
malicious
2772
2345pic_v9.1.8384.up.lm.exe
POST
200
42.62.30.187:80
http://update.pic.2345.com/pic/upgrade/index.php
CN
text
56 b
malicious
1308
2345PicUpdate.exe
POST
200
42.62.30.187:80
http://update.pic.2345.com/pic/check_new_version.php
CN
text
200 b
malicious
3620
chrome.exe
GET
200
61.147.204.74:80
http://download.2345.com/2345pic/2345pic_v9.1.8384.up.lm.exe
CN
executable
20.4 Mb
suspicious
1500
2345PicUpdate.exe
POST
200
221.228.75.211:80
http://t.pic.2345.com/pic/index.php
CN
text
40 b
malicious
2868
2345PicLoader.exe
POST
200
221.228.75.249:80
http://lh.kehuduan.2345.com/pic/active/index.php
CN
text
104 b
malicious
2772
2345pic_v9.1.8384.up.lm.exe
POST
200
221.228.75.241:80
http://t.inst.2345.com/inst/index.php
CN
text
40 b
malicious
1248
2345PicUpdate.exe
POST
200
221.228.75.211:80
http://t.pic.2345.com/pic/index.php
CN
text
40 b
malicious
1308
2345PicUpdate.exe
POST
200
42.62.30.187:80
http://update.pic.2345.com/pic/index.php
CN
binary
1 b
malicious
2772
2345pic_v9.1.8384.up.lm.exe
POST
200
221.228.75.117:80
http://update.inst.2345.com/nindex.php
CN
text
66 b
malicious
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
1500
2345PicUpdate.exe
221.228.75.211:80
t.pic.2345.com
No.31,Jin-rong Street
CN
malicious
2772
2345pic_v9.1.8384.up.lm.exe
221.228.75.117:80
update.inst.2345.com
No.31,Jin-rong Street
CN
malicious
3620
chrome.exe
172.217.22.67:443
www.gstatic.com
Google Inc.
US
whitelisted
1500
2345PicUpdate.exe
42.62.30.187:80
update.pic.2345.com
China Unicom Beijing Province Network
CN
malicious
1472
2345PicViewer.exe
42.62.30.187:80
update.pic.2345.com
China Unicom Beijing Province Network
CN
malicious
2444
2345PicUpdate.exe
42.62.30.187:80
update.pic.2345.com
China Unicom Beijing Province Network
CN
malicious
2772
2345pic_v9.1.8384.up.lm.exe
221.228.75.241:80
t.inst.2345.com
No.31,Jin-rong Street
CN
malicious
1248
2345PicUpdate.exe
221.228.75.211:80
t.pic.2345.com
No.31,Jin-rong Street
CN
malicious
2868
2345PicLoader.exe
221.228.75.249:80
lh.kehuduan.2345.com
No.31,Jin-rong Street
CN
malicious
1308
2345PicUpdate.exe
42.62.30.187:80
update.pic.2345.com
China Unicom Beijing Province Network
CN
malicious

DNS requests

Domain
IP
Reputation
download.2345.com
  • 61.147.204.74
  • 61.147.204.75
  • 61.147.204.76
  • 61.147.204.77
  • 61.147.204.78
  • 61.147.204.73
suspicious
clientservices.googleapis.com
  • 216.58.207.67
whitelisted
accounts.google.com
  • 216.58.207.45
shared
ssl.gstatic.com
  • 172.217.16.131
whitelisted
sb-ssl.google.com
  • 172.217.23.174
whitelisted
clients4.google.com
  • 172.217.16.142
whitelisted
update.pic.2345.com
  • 42.62.30.187
malicious
update.inst.2345.com
  • 221.228.75.117
malicious
t.pic.2345.com
  • 221.228.75.211
malicious
www.gstatic.com
  • 172.217.22.67
whitelisted

Threats

PID
Process
Class
Message
3620
chrome.exe
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
3620
chrome.exe
Misc activity
ET INFO EXE IsDebuggerPresent (Used in Malware Anti-Debugging)
2772
2345pic_v9.1.8384.up.lm.exe
Misc activity
ADWARE [PTsecurity] PUA:Win32/Youxun
2772
2345pic_v9.1.8384.up.lm.exe
Misc activity
ADWARE [PTsecurity] PUA:Win32/Youxun
1500
2345PicUpdate.exe
A Network Trojan was detected
MALWARE [PTsecurity] BehavesLike.Win32.Backdoor.vc
1500
2345PicUpdate.exe
Misc activity
ADWARE [PTsecurity] PUA:Win32/Youxun
2444
2345PicUpdate.exe
Misc activity
ADWARE [PTsecurity] PUA:Win32/Youxun
1248
2345PicUpdate.exe
A Network Trojan was detected
MALWARE [PTsecurity] BehavesLike.Win32.Backdoor.vc
2772
2345pic_v9.1.8384.up.lm.exe
A Network Trojan was detected
MALWARE [PTsecurity] BehavesLike.Win32.Backdoor.vc
2772
2345pic_v9.1.8384.up.lm.exe
Misc activity
ADWARE [PTsecurity] 2345Suite.Install
No debug info