| File name: | Chaos Ransomware Builder v4.bin.zip |
| Full analysis: | https://app.any.run/tasks/8b72a56e-518e-45b4-82be-a4d21221a272 |
| Verdict: | Malicious activity |
| Analysis date: | November 02, 2021, 17:39:20 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v2.0 to extract |
| MD5: | 03C61922C52F3AE465CCE5062972C04E |
| SHA1: | E539E99661DD356418A0964370A136D61D871021 |
| SHA256: | E511314186311C63C49B232793A52D165055A333F3A079E461C094B1A40C9CD8 |
| SSDEEP: | 3072:lJdo68/BQhC3x4vsIoQcLGcqZwqvIxYw+zocUjpggmnSV8r9:loyh2OvBNq4wqvqOajg08r9 |
MALICIOUS
No malicious indicators.SUSPICIOUS
Reads the computer name
- WinRAR.exe (PID: 1876)
Starts Internet Explorer
- rundll32.exe (PID: 2728)
- rundll32.exe (PID: 3012)
Checks supported languages
- WinRAR.exe (PID: 1876)
Executable content was dropped or overwritten
- WinRAR.exe (PID: 1876)
Drops a file that was compiled in debug mode
- WinRAR.exe (PID: 1876)
Uses RUNDLL32.EXE to load library
- WinRAR.exe (PID: 1876)
Reads Microsoft Outlook installation path
- iexplore.exe (PID: 3808)
- iexplore.exe (PID: 3888)
INFO
Reads the computer name
- rundll32.exe (PID: 2728)
- iexplore.exe (PID: 3808)
- iexplore.exe (PID: 3168)
- rundll32.exe (PID: 3012)
- iexplore.exe (PID: 1240)
- iexplore.exe (PID: 3888)
Checks supported languages
- iexplore.exe (PID: 3168)
- rundll32.exe (PID: 2728)
- iexplore.exe (PID: 3808)
- rundll32.exe (PID: 3012)
- iexplore.exe (PID: 1240)
- iexplore.exe (PID: 3888)
Changes internet zones settings
- iexplore.exe (PID: 3168)
- iexplore.exe (PID: 1240)
Application launched itself
- iexplore.exe (PID: 3168)
- iexplore.exe (PID: 1240)
Checks Windows Trust Settings
- iexplore.exe (PID: 3168)
Creates files in the user directory
- iexplore.exe (PID: 3808)
Reads the date of Windows installation
- iexplore.exe (PID: 3168)
Reads settings of System Certificates
- iexplore.exe (PID: 3168)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .zip | | | ZIP compressed archive (100) |
|---|
EXIF
ZIP
| ZipRequiredVersion: | 788 |
|---|---|
| ZipBitFlag: | 0x0001 |
| ZipCompression: | Deflated |
| ZipModifyDate: | 2021:11:02 17:39:04 |
| ZipCRC: | 0xfc0fd79d |
| ZipCompressedSize: | 130049 |
| ZipUncompressedSize: | 563712 |
| ZipFileName: | Chaos Ransomware Builder v4.bin |
Total processes
43
Monitored processes
7
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1240 | "C:\Program Files\Internet Explorer\iexplore.exe" http://go.microsoft.com/fwlink/?LinkId=57426&Ext=bin | C:\Program Files\Internet Explorer\iexplore.exe | — | rundll32.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Exit code: 0 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
| 1876 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\Chaos Ransomware Builder v4.bin.zip" | C:\Program Files\WinRAR\WinRAR.exe | Explorer.EXE | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Exit code: 0 Version: 5.91.0 Modules
| |||||||||||||||
| 2728 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\AppData\Local\Temp\Rar$DIb1876.42410\Chaos Ransomware Builder v4.bin | C:\Windows\system32\rundll32.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3012 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\AppData\Local\Temp\Rar$DIb1876.44891\Chaos Ransomware Builder v4.bin | C:\Windows\system32\rundll32.exe | — | WinRAR.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
| |||||||||||||||
| 3168 | "C:\Program Files\Internet Explorer\iexplore.exe" http://go.microsoft.com/fwlink/?LinkId=57426&Ext=bin | C:\Program Files\Internet Explorer\iexplore.exe | rundll32.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Exit code: 1 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
| 3808 | "C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:3168 CREDAT:267521 /prefetch:2 | C:\Program Files\Internet Explorer\iexplore.exe | iexplore.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Internet Explorer Exit code: 0 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
| 3888 | "C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:1240 CREDAT:267521 /prefetch:2 | C:\Program Files\Internet Explorer\iexplore.exe | iexplore.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Internet Explorer Exit code: 0 Version: 11.00.9600.16428 (winblue_gdr.131013-1700) Modules
| |||||||||||||||
Total events
6 901
Read events
6 736
Write events
163
Delete events
2
Modification events
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\virtio_ivshmem_master_build.zip | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\AppData\Local\Temp\Chaos Ransomware Builder v4.bin.zip | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
| (PID) Process: | (1876) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface |
| Operation: | write | Name: | ShowPassword |
Value: 0 | |||
Executable files
2
Suspicious files
5
Text files
4
Unknown types
5
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\~DFF894D7F77E7103F8.TMP | gmc | |
MD5:— | SHA256:— | |||
| 3808 | iexplore.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Cookies\Low\D2FL29O5.txt | text | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\6BADA8974A10C4BD62CC921D13E43B18_1DC6D7385EA816C957BA2B715AC5C442 | binary | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Internet Explorer\Recovery\Active\{D66CF0FB-3C03-11EC-B8D7-1203334A04AF}.dat | binary | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Internet Explorer\Recovery\Last Active\{D66CF0FC-3C03-11EC-B8D7-1203334A04AF}.dat | binary | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\~DFB0AD0C548C08F337.TMP | gmc | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Internet Explorer\Recovery\Last Active\RecoveryStore.{42C873D0-1D90-11EB-BA2C-12A9866C77DE}.dat | binary | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\~DFAF9D12FBC953FDF5.TMP | gmc | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\~DF6968B48B13672606.TMP | gmc | |
MD5:— | SHA256:— | |||
| 3168 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Internet Explorer\Recovery\Active\RecoveryStore.{D66CF0F9-3C03-11EC-B8D7-1203334A04AF}.dat | binary | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
12
DNS requests
7
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3168 | iexplore.exe | GET | 200 | 93.184.220.29:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTBL0V27RVZ7LBduom%2FnYB45SPUEwQU5Z1ZMIJHWMys%2BghUNoZ7OrUETfACEA%2BnRyLFPYjID1ie%2Bx%2BdSjo%3D | US | der | 1.47 Kb | whitelisted |
3168 | iexplore.exe | GET | — | 8.248.119.254:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?b1602f67e7819fb1 | US | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 51.124.78.146:443 | — | Microsoft Corporation | GB | whitelisted |
3888 | iexplore.exe | 104.111.242.51:443 | go.microsoft.com | Akamai International B.V. | NL | unknown |
3168 | iexplore.exe | 93.184.220.29:80 | ocsp.digicert.com | MCI Communications Services, Inc. d/b/a Verizon Business | US | whitelisted |
1936 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | — | US | whitelisted |
3168 | iexplore.exe | 8.248.119.254:80 | ctldl.windowsupdate.com | Level 3 Communications, Inc. | US | suspicious |
3808 | iexplore.exe | 104.111.242.51:443 | go.microsoft.com | Akamai International B.V. | NL | unknown |
3168 | iexplore.exe | 13.107.22.200:443 | www.bing.com | Microsoft Corporation | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
go.microsoft.com |
| whitelisted |
api.bing.com |
| whitelisted |
www.bing.com |
| whitelisted |
ctldl.windowsupdate.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |