| File name: | 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.zip |
| Full analysis: | https://app.any.run/tasks/8516f60b-34d9-42ab-8f61-4402e8b6c638 |
| Verdict: | Malicious activity |
| Threats: | A backdoor is a type of cybersecurity threat that allows attackers to secretly compromise a system and conduct malicious activities, such as stealing data and modifying files. Backdoors can be difficult to detect, as they often use legitimate system applications to evade defense mechanisms. Threat actors often utilize special malware, such as PlugX, to establish backdoors on target devices. |
| Analysis date: | May 16, 2025, 09:09:37 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v5.1 to extract, compression method=AES Encrypted |
| MD5: | B3CBE817F3278BEF547C00FD12C91357 |
| SHA1: | C9AE0C706D51BF85CC2656F4F5F101A5E337EF32 |
| SHA256: | 5D5FF2D7D525498F1BA3F2E26072E5A212D75FAB47C06EEAA296BF3F2DDEA9C8 |
| SSDEEP: | 98304:mFREb0YU1Y+PZUS9mzZbUb0IPlEjJb57Gs6hpJg6kgxn5nVPEAG6Q4VOGzzqrB5s:tigpaf9rZ |
MALICIOUS
Executing a file with an untrusted certificate
- 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 1760)
Runs injected code in another process
- 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 1760)
Application was injected by another process
- explorer.exe (PID: 5492)
Connects to the CnC server
- explorer.exe (PID: 5492)
SILVERFOX has been detected (SURICATA)
- explorer.exe (PID: 5492)
SUSPICIOUS
Reads security settings of Internet Explorer
- WinRAR.exe (PID: 780)
Connects to unusual port
- explorer.exe (PID: 5492)
Contacting a server suspected of hosting an CnC
- explorer.exe (PID: 5492)
Searches for installed software
- explorer.exe (PID: 5492)
INFO
Executable content was dropped or overwritten
- WinRAR.exe (PID: 780)
The sample compiled with english language support
- WinRAR.exe (PID: 780)
Checks supported languages
- 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 1760)
Creates files in the program directory
- explorer.exe (PID: 5492)
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: | 51 |
|---|---|
| ZipBitFlag: | 0x0003 |
| ZipCompression: | Unknown (99) |
| ZipModifyDate: | 2025:05:16 09:09:22 |
| ZipCRC: | 0x4901bcd1 |
| ZipCompressedSize: | 2924086 |
| ZipUncompressedSize: | 4497752 |
| ZipFileName: | 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe |
Total processes
131
Monitored processes
5
Malicious processes
2
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 780 | "C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\AppData\Local\Temp\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.zip | C:\Program Files\WinRAR\WinRAR.exe | explorer.exe | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Version: 5.91.0 Modules
| |||||||||||||||
| 1760 | "C:\Users\admin\AppData\Local\Temp\Rar$EXb780.39987\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe" | C:\Users\admin\AppData\Local\Temp\Rar$EXb780.39987\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe | — | WinRAR.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: PowerPoint Viewer, Inc. Version: 2.2.3.8 Modules
| |||||||||||||||
| 4268 | "C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent | C:\Windows\System32\slui.exe | — | SppExtComObj.Exe | |||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Activation Client Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5492 | C:\WINDOWS\Explorer.EXE | C:\Windows\explorer.exe | — | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Version: 10.0.19041.3758 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6540 | C:\WINDOWS\system32\SppExtComObj.exe -Embedding | C:\Windows\System32\SppExtComObj.Exe | — | svchost.exe | |||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: KMS Connection Broker Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
2 542
Read events
2 522
Write events
14
Delete events
6
Modification events
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SessionInfo\5\ApplicationViewManagement\W32:000000000004028A |
| Operation: | write | Name: | VirtualDesktop |
Value: 1000000030304456BFA0DB55E4278845B426357D5B5F97B3 | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\preferences.zip | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\chromium_ext.zip | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\omni_23_10_2024_.zip | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\AppData\Local\Temp\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.zip | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
| (PID) Process: | (780) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\Interface |
| Operation: | write | Name: | ShowPassword |
Value: 0 | |||
Executable files
1
Suspicious files
3
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 5492 | explorer.exe | C:\ProgramData\kernelquick.sys | binary | |
MD5:AE50B29A0B8DCC411F24F1863B0EAFDE | SHA256:6B4BBBCE480FBC50D39A8EC4B72CDB7D781B151921E063DD899FD9B736ADCF68 | |||
| 1760 | 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe | C:\Users\Public\Downloads\bb.jpg | binary | |
MD5:8DD7EC06A0473B75AF7B2BFF8848F39C | SHA256:FB4ACD3185571B379FB7768CE8488DEFC92FBB5861A758C31CED8836A24369F4 | |||
| 5492 | explorer.exe | C:\Users\admin\AppData\Local\Microsoft\PenWorkspace\DiscoverCacheData.dat | binary | |
MD5:E49C56350AEDF784BFE00E444B879672 | SHA256:A8BD235303668981563DFB5AAE338CB802817C4060E2C199B7C84901D57B7E1E | |||
| 780 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$EXb780.39987\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe | executable | |
MD5:8030E60EBED7DF5D76E3CFD3223435C6 | SHA256:139466A8596FE3E2F172B28E5A7437A400FBA6C5B6D85D83359101ED68E95A5F | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
21
DNS requests
15
Threats
11
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 23.216.77.6:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5960 | SIHClient.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
5960 | SIHClient.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 23.216.77.6:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
3216 | svchost.exe | 172.211.123.249:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
6544 | svchost.exe | 20.190.159.131:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 2.23.77.188:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
2104 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
5492 | explorer.exe | 8.210.193.196:7777 | dsh.fvsrchps.cn | Alibaba US Technology Co., Ltd. | HK | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
dsh.fvsrchps.cn |
| unknown |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
5492 | explorer.exe | A Network Trojan was detected | ET MALWARE Win32/ProcessKiller CnC Initialization M2 |
5492 | explorer.exe | Potentially Bad Traffic | PAYLOAD [ANY.RUN] XORed Windows executable has been loaded |
5492 | explorer.exe | Potentially Bad Traffic | PAYLOAD [ANY.RUN] XORed Windows executable has been loaded |
5492 | explorer.exe | Malware Command and Control Activity Detected | ET MALWARE Winos4.0 Framework CnC Login Message |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox TCP Init Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | ET MALWARE Winos4.0 Framework CnC Login Message CnC Server Response |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Encrypted Client Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet |