| File name: | C:\Users\admin\Documents\krnl\krnlss.exe |
| Full analysis: | https://app.any.run/tasks/258dc73f-d40c-48c5-82b1-aa9c1f040dec |
| Verdict: | Malicious activity |
| Analysis date: | September 26, 2021, 11:04:22 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | B1BBC709A59AF5442CE41DF6C898D4CC |
| SHA1: | 7D84C6F664D2B54F78CD5F4FF7B7CF55423DB0C3 |
| SHA256: | 088F351A85A64B88FAF31298557B9C74BCF9E9A386BF4AF67EEB2B123CEE2CE8 |
| SSDEEP: | 12288:rMRME7+G70EE/0GGGGGGhGGGGxdoM43nw1kIk7ukk:rSC4ysGGGGGGhGGGGx1158uk |
MALICIOUS
No malicious indicators.SUSPICIOUS
Application launched itself
- krnlss.exe (PID: 2316)
Checks supported languages
- krnlss.exe (PID: 2316)
- krnlss.exe (PID: 852)
Reads the computer name
- krnlss.exe (PID: 2316)
- krnlss.exe (PID: 852)
Reads Environment values
- krnlss.exe (PID: 852)
INFO
Checks supported languages
- opera.exe (PID: 3924)
Manual execution by user
- opera.exe (PID: 3924)
Check for Java to be installed
- opera.exe (PID: 3924)
Reads the computer name
- opera.exe (PID: 3924)
Reads the date of Windows installation
- opera.exe (PID: 3924)
Dropped object may contain Bitcoin addresses
- opera.exe (PID: 3924)
Creates files in the user directory
- opera.exe (PID: 3924)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| AssemblyVersion: | 1.0.0.0 |
|---|---|
| ProductVersion: | 1.0.0.0 |
| ProductName: | krnlss |
| OriginalFileName: | krnlss.exe |
| LegalTrademarks: | - |
| LegalCopyright: | Copyright © 2019 |
| InternalName: | krnlss.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | krnlss |
| CompanyName: | - |
| Comments: | - |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 6 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x10770e |
| UninitializedDataSize: | - |
| InitializedDataSize: | 190464 |
| CodeSize: | 1071104 |
| LinkerVersion: | 48 |
| PEType: | PE32 |
| TimeStamp: | 2020:09:30 23:00:21+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 30-Sep-2020 21:00:21 |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | krnlss |
| FileVersion: | 1.0.0.0 |
| InternalName: | krnlss.exe |
| LegalCopyright: | Copyright © 2019 |
| LegalTrademarks: | - |
| OriginalFilename: | krnlss.exe |
| ProductName: | krnlss |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 30-Sep-2020 21:00:21 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x00105714 | 0x00105800 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 4.66819 |
.rsrc | 0x00108000 | 0x0002E47A | 0x0002E600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 1.23893 |
.reloc | 0x00138000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0980042 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
2 | 2.10543 | 2440 | UNKNOWN | UNKNOWN | RT_ICON |
3 | 1.9881 | 4264 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 1.69507 | 9640 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 1.07419 | 170248 | UNKNOWN | UNKNOWN | RT_ICON |
32512 | 2.88636 | 76 | UNKNOWN | UNKNOWN | RT_GROUP_ICON |
Imports
mscoree.dll |
Total processes
35
Monitored processes
3
Malicious processes
0
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 852 | "C:\Users\admin\AppData\Local\Temp\krnlss.exe" | C:\Users\admin\AppData\Local\Temp\krnlss.exe | — | krnlss.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: krnlss Exit code: 1 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2316 | "C:\Users\admin\AppData\Local\Temp\krnlss.exe" | C:\Users\admin\AppData\Local\Temp\krnlss.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Description: krnlss Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3924 | "C:\Program Files\Opera\opera.exe" | C:\Program Files\Opera\opera.exe | Explorer.EXE | ||||||||||||
User: admin Company: Opera Software Integrity Level: MEDIUM Description: Opera Internet Browser Exit code: 0 Version: 1748 Modules
| |||||||||||||||
Total events
1 869
Read events
1 751
Write events
118
Delete events
0
Modification events
| (PID) Process: | (2316) krnlss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (2316) krnlss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (2316) krnlss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (2316) krnlss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (3924) opera.exe | Key: | HKEY_CURRENT_USER\Software\Opera Software |
| Operation: | write | Name: | Last CommandLine v2 |
Value: C:\Program Files\Opera\opera.exe | |||
| (PID) Process: | (3924) opera.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\171\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
0
Suspicious files
25
Text files
23
Unknown types
6
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Opera\Opera\operaprefs.ini | text | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Opera\Opera\oprF43B.tmp | text | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Opera\Opera\oprF48B.tmp | xml | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Opera\Opera\tasks.xml | xml | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Opera\Opera\opssl6.dat | binary | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Local\Opera\Opera\cache\sesn\opr00001.tmp | xml | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6QKY0F21LZ4YSAICH6CL.temp | binary | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\16ec093b8f51508f.customDestinations-ms | binary | |
MD5:— | SHA256:— | |||
| 3924 | opera.exe | C:\Users\admin\AppData\Roaming\Opera\Opera\sessions\autosave.win | text | |
MD5:— | SHA256:— | |||
| 2316 | krnlss.exe | C:\Users\admin\AppData\Local\Temp\krnlss.exe.config | xml | |
MD5:0ED4B3831FF5E91DFF636145F68AAC4C | SHA256:03962AE5A55DFC70E2717771A9A7AA37B956B2C5B4C62E3CFF9FE24360250347 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
9
DNS requests
5
Threats
3
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3924 | opera.exe | GET | 200 | 93.184.220.29:80 | http://crl3.digicert.com/DigiCertHighAssuranceEVRootCA.crl | US | der | 592 b | whitelisted |
3924 | opera.exe | GET | 301 | 104.21.39.171:80 | http://krnl.ca/ | US | — | — | malicious |
3924 | opera.exe | GET | 200 | 142.250.186.78:80 | http://clients1.google.com/complete/search?q=krnl&client=opera-suggest-omnibox&hl=de | US | text | 150 b | whitelisted |
3924 | opera.exe | GET | 400 | 185.26.182.111:80 | http://sitecheck2.opera.com/?host=krnl.ca&hdn=qM0Tnz9g/MIr%2Bw5G%2Bw99Gg== | unknown | html | 150 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 |
|---|---|---|---|---|---|---|
3924 | opera.exe | 104.21.39.171:443 | krnl.ca | Cloudflare Inc | US | malicious |
3924 | opera.exe | 185.26.182.93:443 | certs.opera.com | Opera Software AS | — | whitelisted |
3924 | opera.exe | 93.184.220.29:80 | crl3.digicert.com | MCI Communications Services, Inc. d/b/a Verizon Business | US | whitelisted |
3924 | opera.exe | 142.250.186.78:80 | clients1.google.com | Google Inc. | US | whitelisted |
3924 | opera.exe | 104.21.39.171:80 | krnl.ca | Cloudflare Inc | US | malicious |
3924 | opera.exe | 185.26.182.111:80 | sitecheck2.opera.com | Opera Software AS | — | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
certs.opera.com |
| whitelisted |
crl3.digicert.com |
| whitelisted |
clients1.google.com |
| whitelisted |
krnl.ca |
| malicious |
sitecheck2.opera.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potentially Bad Traffic | ET INFO TLS Handshake Failure |
— | — | Potentially Bad Traffic | ET INFO TLS Handshake Failure |
— | — | Potentially Bad Traffic | ET INFO TLS Handshake Failure |