File name:

Worm.Klez.E.exe

Full analysis: https://app.any.run/tasks/ef2e4ac1-e95a-4011-92d8-d15a567185ad
Verdict: Malicious activity
Analysis date: February 13, 2024, 16:24:46
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows
MD5:

F2DB87B351770E5995E9FCAAD47D9591

SHA1:

4C75BD93F458096FBC27FA852E16CE25A602F267

SHA256:

3113FA9A3CF00ED423A2C686A2FFB19586F6A047747DE65A93436A7DCA8FCFA7

SSDEEP:

768:zXS6Lnze1gshn5ew/QuBdL/4Ckir4SWeq3HwFdkt+Afs2DBnoLK6KcgMvtDv:TSSnze1gsJ55n/4CkOwwF+bho0stD

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

    • Drops the executable file immediately after the start

      • Worm.Klez.E.exe (PID: 4052)
      • Worm.Klez.E.exe (PID: 2572)
      • Winkxa.exe (PID: 2692)

    • Creates a writable file in the system directory

      • Worm.Klez.E.exe (PID: 2572)

  • SUSPICIOUS

    • Executes as Windows Service

      • Winkxa.exe (PID: 2692)

    • Executable content was dropped or overwritten

      • Worm.Klez.E.exe (PID: 2572)
      • Winkxa.exe (PID: 2692)

    • Process drops legitimate windows executable

      • Winkxa.exe (PID: 2692)

    • Detected use of alternative data streams (AltDS)

      • Winkxa.exe (PID: 2692)

  • INFO

    • Checks supported languages

      • Worm.Klez.E.exe (PID: 2572)
      • Worm.Klez.E.exe (PID: 4052)
      • Winkxa.exe (PID: 2692)

    • Reads the computer name

      • Worm.Klez.E.exe (PID: 4052)
      • Winkxa.exe (PID: 2692)
      • Worm.Klez.E.exe (PID: 2572)

    • Manual execution by a user

      • explorer.exe (PID: 2920)
      • Worm.Klez.E.exe (PID: 2572)

    • Checks proxy server information

      • Winkxa.exe (PID: 2692)

    • Creates files in the program directory

      • Winkxa.exe (PID: 2692)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable MS Visual C++ (generic) (67.4)
.dll | Win32 Dynamic Link Library (generic) (14.2)
.exe | Win32 Executable (generic) (9.7)
.exe | Generic Win/DOS Executable (4.3)
.exe | DOS Executable Generic (4.3)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2002:01:14 08:44:12+00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 6
CodeSize: 49152
InitializedDataSize: 557056
UninitializedDataSize: -
EntryPoint: 0x8078
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
43
Monitored processes
4
Malicious processes
1
Suspicious processes
1

Behavior graph

Click at the process to see the details
start worm.klez.e.exe no specs explorer.exe no specs worm.klez.e.exe winkxa.exe

Process information

PID
CMD
Path
Indicators
Parent process
4052"C:\Users\admin\AppData\Local\Temp\Worm.Klez.E.exe" C:\Users\admin\AppData\Local\Temp\Worm.Klez.E.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\worm.klez.e.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\ws2_32.dll
c:\windows\system32\nsi.dll
2920"C:\Windows\explorer.exe" C:\Windows\explorer.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Explorer
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\explorer.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
2572"C:\Users\admin\AppData\Local\Temp\Worm.Klez.E.exe" C:\Users\admin\AppData\Local\Temp\Worm.Klez.E.exe
explorer.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\worm.klez.e.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\ws2_32.dll
c:\windows\system32\nsi.dll
2692C:\Windows\system32\Winkxa.exeC:\Windows\System32\Winkxa.exe
services.exe
User:
SYSTEM
Integrity Level:
SYSTEM
Modules
Images
c:\windows\system32\winkxa.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\ws2_32.dll
c:\windows\system32\nsi.dll
Total events
826
Read events
820
Write events
2
Delete events
4

Modification events

(PID) Process:(2692) Winkxa.exeKey:HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
(PID) Process:(2692) Winkxa.exeKey:HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:delete valueName:ProxyServer
Value:
(PID) Process:(2692) Winkxa.exeKey:HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:delete valueName:ProxyOverride
Value:
(PID) Process:(2692) Winkxa.exeKey:HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:delete valueName:AutoConfigURL
Value:
(PID) Process:(2692) Winkxa.exeKey:HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:delete valueName:AutoDetect
Value:
(PID) Process:(2692) Winkxa.exeKey:HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
Operation:writeName:SavedLegacySettings
Value:
460000000A00000009000000000000000000000000000000040000000000000000000000000000000000000000000000000000000100000002000000C0A8016B000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Executable files
23
Suspicious files
8
Text files
0
Unknown types
7

Dropped files

PID
Process
Filename
Type
2692Winkxa.exebinary
MD5:84CCB253F4ABE1F04326E04F5D3E09C9
SHA256:12D13E9C5965375BB5849D32208BD8B041AF346F724C5626BF82E4751C93C746
2692Winkxa.exeC:\Windows\TEMP\Yay55BF.exeexecutable
MD5:77710E343790592355AAE4BCBD6EDFC5
SHA256:A43F27686754294207B3AC3EA0B65648B6A7C4C52BBEE95BF6EDD7AC7F713F9C
2692Winkxa.exeC:\Windows\TEMP\Zu4FE1.exeexecutable
MD5:77710E343790592355AAE4BCBD6EDFC5
SHA256:A43F27686754294207B3AC3EA0B65648B6A7C4C52BBEE95BF6EDD7AC7F713F9C
2572Worm.Klez.E.exeC:\Windows\system32\Winkxa.exeexecutable
MD5:F2DB87B351770E5995E9FCAAD47D9591
SHA256:3113FA9A3CF00ED423A2C686A2FFB19586F6A047747DE65A93436A7DCA8FCFA7
2692Winkxa.exeC:\Windows\TEMP\Btc6A62.exeexecutable
MD5:77710E343790592355AAE4BCBD6EDFC5
SHA256:A43F27686754294207B3AC3EA0B65648B6A7C4C52BBEE95BF6EDD7AC7F713F9C
2692Winkxa.exeC:\Windows\TEMP\Txr95BB.exeexecutable
MD5:77710E343790592355AAE4BCBD6EDFC5
SHA256:A43F27686754294207B3AC3EA0B65648B6A7C4C52BBEE95BF6EDD7AC7F713F9C
2692Winkxa.exeC:\Windows\TEMP\Fr5A06.exeexecutable
MD5:77710E343790592355AAE4BCBD6EDFC5
SHA256:A43F27686754294207B3AC3EA0B65648B6A7C4C52BBEE95BF6EDD7AC7F713F9C
2692Winkxa.exeC:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroRd32.exeexecutable
MD5:EC2002A5F6A7FD75FDFF790B8788A757
SHA256:DF123CA72BA8A96CB4939F9043E9EE6FCD83A52C2E00FE820BD7579AB8F1C1E6
2692Winkxa.exeC:\Program Files\Google\Chrome\Application\chrome.fudbinary
MD5:EC4060CC7FE3B2BC9E738D5EBCC605D6
SHA256:D0C19242202160B04E7B03775C49E74001FAE652D3EBCB74FED3EA247574A84D
2692Winkxa.exeC:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXMLED.xyubinary
MD5:7AC215FBBEB4702A1A2A2DD2644B6EAB
SHA256:ED71E42F6DC419807834656743D522CB1FF6A1C6A2CE15E97861A0565E678218
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
0
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
4
System
192.168.100.255:138
—
—
—
unknown
4
System
192.168.100.255:137
—
—
—
unknown
1080
svchost.exe
224.0.0.252:5355
—
—
—
unknown

DNS requests

No data

Threats

No threats detected
No debug info
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Reports
Worm.Klez.E.exe