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File name:

krnl.exe

Full analysis: https://app.any.run/tasks/8fef3498-9fc6-4159-a453-82d0a7f8d5c0
Verdict: Malicious activity
Analysis date: January 24, 2022, 15:48:54
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:

E2A9FEC47A88D70D0BB16160420418BA

SHA1:

95B7634A88A21EE918576401F2A5FD40B8D919C9

SHA256:

D7F152F22CE516AD72F5FA46148C045417F922A80B2D9869D3DAC328944C8B7F

SSDEEP:

768:yU8+/s6nFkBywGNunzi+pCWg9PgRv52rpMIH+:NxyGNF+fg9oRvM1e

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Writes to a start menu file

      • krnl.exe (PID: 1044)

    • Uses Task Scheduler to run other applications

      • krnl.exe (PID: 1044)

    • Changes the autorun value in the registry

      • krnl.exe (PID: 1044)

    • Loads the Task Scheduler COM API

      • schtasks.exe (PID: 3068)

  • SUSPICIOUS

    • Reads the computer name

      • krnl.exe (PID: 1044)

    • Checks supported languages

      • krnl.exe (PID: 1044)

    • Reads Environment values

      • krnl.exe (PID: 1044)

    • Drops a file with a compile date too recent

      • krnl.exe (PID: 1044)

    • Creates files in the user directory

      • krnl.exe (PID: 1044)

    • Executable content was dropped or overwritten

      • krnl.exe (PID: 1044)

  • INFO

    • Reads settings of System Certificates

      • krnl.exe (PID: 1044)

    • Reads the computer name

      • schtasks.exe (PID: 3068)

    • Checks supported languages

      • schtasks.exe (PID: 3068)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

AssemblyVersion: 0.0.0.0
ProductVersion: 0.0.0.0
OriginalFileName: krnl.exe
LegalCopyright:
InternalName: krnl.exe
FileVersion: 0.0.0.0
FileDescription:
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 0.0.0.0
FileVersionNumber: 0.0.0.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0xc1ee
UninitializedDataSize: -
InitializedDataSize: 47616
CodeSize: 41472
LinkerVersion: 11
PEType: PE32
TimeStamp: 2022:01:24 16:45:40+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 24-Jan-2022 15:45:40
FileDescription: -
FileVersion: 0.0.0.0
InternalName: krnl.exe
LegalCopyright: -
OriginalFilename: krnl.exe
ProductVersion: 0.0.0.0
Assembly Version: 0.0.0.0

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: 24-Jan-2022 15:45:40
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x0000A1F4
0x0000A200
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.70268
.rsrc
0x0000E000
0x0000B784
0x0000B800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
3.80797
.reloc
0x0001A000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.0815394

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.00112
490
Latin 1 / Western European
UNKNOWN
RT_MANIFEST
2
3.20769
16936
Latin 1 / Western European
UNKNOWN
RT_ICON
3
3.18977
9640
Latin 1 / Western European
UNKNOWN
RT_ICON
4
3.4226
6760
Latin 1 / Western European
UNKNOWN
RT_ICON
5
3.17064
4264
Latin 1 / Western European
UNKNOWN
RT_ICON
6
3.39088
2440
Latin 1 / Western European
UNKNOWN
RT_ICON
7
3.34639
1720
Latin 1 / Western European
UNKNOWN
RT_ICON
8
2.99605
1128
Latin 1 / Western European
UNKNOWN
RT_ICON

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
37
Monitored processes
2
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start krnl.exe schtasks.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1044"C:\Users\admin\AppData\Local\Temp\krnl.exe" C:\Users\admin\AppData\Local\Temp\krnl.exe
Explorer.EXE
User:
admin
Integrity Level:
MEDIUM
Description:
Version:
0.0.0.0
3068"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 1 /tn "krnl" /tr "C:\Users\admin\AppData\Roaming\krnl.exe"C:\Windows\System32\schtasks.exe—krnl.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Manages scheduled tasks
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Total events
3 402
Read events
3 367
Write events
35
Delete events
0

Modification events

(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASAPI32
Operation:writeName:EnableFileTracing
Value:
0
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASAPI32
Operation:writeName:EnableConsoleTracing
Value:
0
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASAPI32
Operation:writeName:FileTracingMask
Value:
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASAPI32
Operation:writeName:ConsoleTracingMask
Value:
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASAPI32
Operation:writeName:MaxFileSize
Value:
1048576
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASAPI32
Operation:writeName:FileDirectory
Value:
%windir%\tracing
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASMANCS
Operation:writeName:EnableFileTracing
Value:
0
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASMANCS
Operation:writeName:EnableConsoleTracing
Value:
0
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASMANCS
Operation:writeName:FileTracingMask
Value:
(PID) Process:(1044) krnl.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_RASMANCS
Operation:writeName:ConsoleTracingMask
Value:
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
1044krnl.exeC:\Users\admin\AppData\Roaming\krnl.exeexecutable
MD5:E2A9FEC47A88D70D0BB16160420418BA
SHA256:D7F152F22CE516AD72F5FA46148C045417F922A80B2D9869D3DAC328944C8B7F
1044krnl.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\krnl.exeexecutable
MD5:E2A9FEC47A88D70D0BB16160420418BA
SHA256:D7F152F22CE516AD72F5FA46148C045417F922A80B2D9869D3DAC328944C8B7F
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
4
DNS requests
3
Threats
0

HTTP requests

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
1044
krnl.exe
3.141.142.211:17858
6.tcp.ngrok.io
—
US
malicious
1044
krnl.exe
162.159.137.85:443
sharetext.me
Cloudflare Inc
—
malicious
1044
krnl.exe
208.95.112.1:80
ip-api.com
IBURST
—
malicious

DNS requests

Domain
IP
Reputation
ip-api.com
  • 208.95.112.1
shared
sharetext.me
  • 162.159.137.85
  • 162.159.138.85
malicious
6.tcp.ngrok.io
  • 3.141.142.211
malicious

Threats

PID
Process
Class
Message
—
—
Potential Corporate Privacy Violation
ET POLICY DNS Query to a *.ngrok domain (ngrok.io)
No debug info
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Reports
krnl.exe