| File name: | MalwareSample.exe.exe |
| Full analysis: | https://app.any.run/tasks/6158c95c-c2e6-4dff-aa6d-7f251d8c9e1c |
| Verdict: | Malicious activity |
| Threats: | Cobalt Strike is a legitimate penetration software toolkit developed by Forta. But its cracked versions are widely adopted by bad actors, who use it as a C2 system of choice for targeted attacks. |
| Analysis date: | April 29, 2025, 16:20:03 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32+ executable (DLL) (GUI) x86-64 (stripped to external PDB), for MS Windows, 10 sections |
| MD5: | 6B500AD29C39F72CD77C150A47DF64EA |
| SHA1: | D16253151F6E59942E45B105EFBC0F2E97984411 |
| SHA256: | B375E37EE678D8FA056E06CFECCBE1077D517365A46981A811ADB637BA5C838C |
| SSDEEP: | 24576:V17PXiLtxVhweORzqznLBuwBtrhJZibZ8kU8tG0:V17PXiLtxV+JqznlumtrhJZidh |
MALICIOUS
COBALTSTRIKE has been detected (YARA)
- rundll32.exe (PID: 4428)
SUSPICIOUS
No suspicious indicators.INFO
The sample compiled with english language support
- rundll32.exe (PID: 4428)
Reads security settings of Internet Explorer
- rundll32.exe (PID: 4428)
Checks proxy server information
- rundll32.exe (PID: 4428)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | InstallShield setup (71.5) |
|---|---|---|
| .scr | | | Windows screen saver (21.7) |
| .exe | | | Generic Win/DOS Executable (3.3) |
| .exe | | | DOS Executable Generic (3.3) |
EXIF
EXE
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2023:02:07 12:10:07+00:00 |
| ImageFileCharacteristics: | Executable, No line numbers, No symbols, Large address aware, No debug, DLL |
| PEType: | PE32+ |
| LinkerVersion: | 8 |
| CodeSize: | 307200 |
| InitializedDataSize: | 16384 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x12c0 |
| OSVersion: | 5.2 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.1 |
| ProductVersionNumber: | 1.0.0.1 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | FileDescriptor By Raghuwanshi.G.S |
| FileVersion: | 1, 0, 0, 1 |
| InternalName: | FileDescriptor |
| LegalCopyright: | Copyright © 2008 |
| LegalTrademarks: | - |
| OriginalFileName: | FileDescriptor.exe |
| PrivateBuild: | - |
| ProductName: | FileDescriptor |
| ProductVersion: | 1, 0, 0, 1 |
| SpecialBuild: | - |
Total processes
130
Monitored processes
3
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4428 | "C:\WINDOWS\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\MalwareSample.exe.exe.dll, #1 | C:\Windows\System32\rundll32.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4776 | 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
| |||||||||||||||
| 4812 | "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) | |||||||||||||||
Total events
555
Read events
555
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
7
TCP/UDP connections
20
DNS requests
15
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5496 | MoUsoCoreWorker.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5496 | MoUsoCoreWorker.exe | GET | 200 | 23.216.77.18:80 | 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 |
— | — | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
6712 | 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 |
6712 | 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 |
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 |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5496 | MoUsoCoreWorker.exe | 23.216.77.18:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
5496 | MoUsoCoreWorker.exe | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
— | — | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
— | — | 172.211.123.248:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
6544 | svchost.exe | 40.126.31.3:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 184.30.131.245:80 | ocsp.digicert.com | AKAMAI-AS | US | whitelisted |
2104 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
thefirstupd.com |
| unknown |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |