Malware analysis SKlauncher 2.8.1.exe No threats detected

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File name:	SKlauncher 2.8.1.exe
Full analysis:	https://app.any.run/tasks/92f959c4-b1fb-49ba-971c-6a70e9461417
Verdict:	No threats detected
Analysis date:	July 26, 2019, 12:12:31
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME:	application/x-dosexec
File info:	PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows
MD5:	5EA0A441AB5228F4EB0242EA99744B10
SHA1:	CC4FA46DFAA65200DAD3CCE66D40885E963E342D
SHA256:	4C5583870EB4ACBEBD42DEDF374359C0D7C20184F226B84AB2C3646FE9D1E3DA
SSDEEP:	12288:RKsxAXEFmaW3MrqAXPN/JYIwOkS7iWxp5MOg8ZgEom9rIwxCT:RLxYE8MrqYPwpjzEom9dQT

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.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 8.0.7601.17514 undefined
Adobe Acrobat Reader DC MUI (15.023.20070)
Adobe Flash Player 26 ActiveX (26.0.0.131)
Adobe Flash Player 26 NPAPI (26.0.0.131)
Adobe Flash Player 26 PPAPI (26.0.0.131)
Adobe Refresh Manager (1.8.0)
CCleaner (5.35)
FileZilla Client 3.36.0 (3.36.0)
Google Chrome (75.0.3770.100)
Google Update Helper (1.3.34.7)
Java 8 Update 92 (8.0.920.14)
Java Auto Updater (2.8.92.14)
Microsoft .NET Framework 4.7.2 (4.7.03062)
Microsoft Office Access MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Access Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Excel MUI (English) 2010 (14.0.6029.1000)
Microsoft Office OneNote MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Outlook MUI (English) 2010 (14.0.6029.1000)
Microsoft Office PowerPoint MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Professional 2010 (14.0.6029.1000)
Microsoft Office Proof (English) 2010 (14.0.6029.1000)
Microsoft Office Proof (French) 2010 (14.0.6029.1000)
Microsoft Office Proof (Spanish) 2010 (14.0.6029.1000)
Microsoft Office Proofing (English) 2010 (14.0.6029.1000)
Microsoft Office Publisher MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Single Image 2010 (14.0.6029.1000)
Microsoft Office Word MUI (English) 2010 (14.0.6029.1000)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161 (9.0.30729.6161)
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219 (10.0.40219)
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x86 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x86 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2015-2019 Redistributable (x86) - 14.21.27702 (14.21.27702.2)
Microsoft Visual C++ 2019 X86 Additional Runtime - 14.21.27702 (14.21.27702)
Microsoft Visual C++ 2019 X86 Minimum Runtime - 14.21.27702 (14.21.27702)
Mozilla Firefox 67.0.4 (x86 en-US) (67.0.4)
Notepad++ (32-bit x86) (7.5.1)
Opera 12.15 (12.15.1748)
Skype version 8.29 (8.29)
Update for Microsoft .NET Framework 4.7.2 (KB4087364) (1)
VLC media player (2.2.6)
WinRAR 5.60 (32-bit) (5.60.0)

Hotfixes

Client LanguagePack Package
Client Refresh LanguagePack Package
CodecPack Basic Package
Foundation Package
IE Troubleshooters Package
InternetExplorer Optional Package
KB2534111
KB2999226
KB4019990
KB976902
LocalPack AU Package
LocalPack CA Package
LocalPack GB Package
LocalPack US Package
LocalPack ZA Package
ProfessionalEdition
UltimateEdition

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MALICIOUS
No malicious indicators.
SUSPICIOUS
- Creates files in the user directory
  - javaw.exe (PID: 2356)
- Executes JAVA applets
  - SKlauncher 2.8.1.exe (PID: 3524)
INFO
- Dropped object may contain Bitcoin addresses
  - javaw.exe (PID: 2356)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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No Malware configuration.

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TRiD

.exe	\|	Win32 Executable MS Visual C++ (generic) (41)
.exe	\|	Win64 Executable (generic) (36.3)
.dll	\|	Win32 Dynamic Link Library (generic) (8.6)
.exe	\|	Win32 Executable (generic) (5.9)
.exe	\|	Win16/32 Executable Delphi generic (2.7)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2018:12:14 14:06:27+01:00
PEType:	PE32
LinkerVersion:	2.22
CodeSize:	19968
InitializedDataSize:	60416
UninitializedDataSize:	36864
EntryPoint:	0x1290
OSVersion:	4
ImageVersion:	1
SubsystemVersion:	4
Subsystem:	Windows GUI
FileVersionNumber:	2.8.1.0
ProductVersionNumber:	2.8.1.0
FileFlagsMask:	0x0000
FileFlags:	(none)
FileOS:	Windows NT
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	English (U.S.)
CharacterSet:	Windows, Latin1
CompanyName:	Mojang
FileDescription:	The Minecraft Launcher
FileVersion:	2.8.1
InternalName:	SKlauncher
LegalCopyright:	Mojang
LegalTrademarks:	-
OriginalFileName:	SKlauncher 2.8.1.exe
ProductName:	SKlauncher
ProductVersion:	2.8.1

Summary

Architecture:	IMAGE_FILE_MACHINE_I386
Subsystem:	IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date:	14-Dec-2018 13:06:27
Detected languages:	English - United States Process Default Language
CompanyName:	Mojang
FileDescription:	The Minecraft Launcher
FileVersion:	2.8.1
InternalName:	SKlauncher
LegalCopyright:	Mojang
LegalTrademarks:	-
OriginalFilename:	SKlauncher 2.8.1.exe
ProductName:	SKlauncher
ProductVersion:	2.8.1

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:	6
Time date stamp:	14-Dec-2018 13:06:27
Pointer to Symbol Table:	0x00000000
Number of symbols:	0
Size of Optional Header:	0x00E0
Characteristics:	IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_DEBUG_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_RELOCS_STRIPPED

Sections

Name	Virtual Address	Virtual Size	Raw Size	Charateristics	Entropy
.text	0x00001000	0x00004CE0	0x00004E00	IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ	6.03278
.data	0x00006000	0x00000040	0x00000200	IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE	0.163808
.rdata	0x00007000	0x00000680	0x00000800	IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ	4.92317
.bss	0x00008000	0x00008E30	0x00000000	IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE	0
.idata	0x00011000	0x00000AA8	0x00000C00	IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE	4.65099
.rsrc	0x00012000	0x0000D4BC	0x0000D600	IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_2BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_512BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE	7.62498

Resources

Title	Entropy	Size	Codepage	Language	Type
1	3.28745	740	UNKNOWN	Process Default Language	RT_VERSION
2	2.72548	9	UNKNOWN	Process Default Language	RT_RCDATA
3	2.25163	6	UNKNOWN	Process Default Language	RT_RCDATA
4	6.30866	9640	UNKNOWN	Process Default Language	RT_ICON
5	7.97926	34399	UNKNOWN	Process Default Language	RT_ICON
10	3.61687	17	UNKNOWN	Process Default Language	RT_RCDATA
17	2.32193	5	UNKNOWN	Process Default Language	RT_RCDATA
18	1	2	UNKNOWN	Process Default Language	RT_RCDATA
20	1.58496	3	UNKNOWN	Process Default Language	RT_RCDATA
21	4.49984	84	UNKNOWN	Process Default Language	RT_RCDATA

Imports


ADVAPI32.DLL
KERNEL32.dll
SHELL32.DLL
USER32.dll
msvcrt.dll

No data.

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All screenshots are available in the full report

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Total processes

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

2356

"C:\Program Files\Java\jre1.8.0_92\bin\javaw.exe" -Xms32m -Xmx256m -jar "C:\Users\admin\AppData\Local\Temp\SKlauncher 2.8.1.exe"

C:\Program Files\Java\jre1.8.0_92\bin\javaw.exe

SKlauncher 2.8.1.exe

User:

admin

Company:

Oracle Corporation

Integrity Level:

MEDIUM

Description:

Java(TM) Platform SE binary

Exit code:

Version:

8.0.920.14

Modules

Images
c:\program files\java\jre1.8.0_92\bin\javaw.exe
c:\systemroot\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\user32.dll
c:\windows\system32\gdi32.dll

3524

"C:\Users\admin\AppData\Local\Temp\SKlauncher 2.8.1.exe"

C:\Users\admin\AppData\Local\Temp\SKlauncher 2.8.1.exe

—

explorer.exe

User:

admin

Company:

Mojang

Integrity Level:

MEDIUM

Description:

The Minecraft Launcher

Exit code:

Version:

2.8.1

Modules

Images
c:\users\admin\appdata\local\temp\sklauncher 2.8.1.exe
c:\systemroot\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\shell32.dll
c:\windows\system32\shlwapi.dll

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Total events

Read events

Write events

Delete events

Modification events


(PID) Process:	(2356) javaw.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Direct3D\MostRecentApplication
Operation:	write	Name:	Name
Value: javaw.exe

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2356	javaw.exe	C:\Users\admin\AppData\Roaming\.minecraft\sklauncher\launcher.jar		—
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Local\Temp\imageio2019476754481697488.tmp		—
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Local\Temp\imageio7496914790035121572.tmp		—
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Local\Temp\imageio4893221260658656414.tmp		—
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Local\Temp\imageio9086678094025386301.tmp		—
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\.oracle_jre_usage\90737d32e3abaa4.timestamp		text
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Roaming\.minecraft\sklauncher\launcher.pack.lzma		lzma
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Roaming\.minecraft\sklauncher\sklauncher-28.data		text
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Roaming\.minecraft\launcher_profiles.json		text
		MD5:—	SHA256:—
2356	javaw.exe	C:\Users\admin\AppData\Roaming\.minecraft\sklauncher\launcher.patch		binary
		MD5:—	SHA256:—

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
2356	javaw.exe	GET	200	104.31.81.246:80	http://api.skmedix.pl/launcher/2.8/data/	US	text	862 b	malicious
2356	javaw.exe	GET	200	104.31.81.246:80	http://api.skmedix.pl/launcher/2.8/data/	US	text	862 b	malicious
2356	javaw.exe	GET	200	104.31.81.246:80	http://api.skmedix.pl/v2/launcher/2.8/files/stable/launcher.pack.lzma	US	lzma	1.05 Mb	malicious
2356	javaw.exe	GET	200	104.31.81.246:80	http://api.skmedix.pl/v2/launcher/2.8/files/stable/sklauncher.patch	US	binary	1.01 Mb	malicious
2356	javaw.exe	GET	200	13.32.159.218:80	http://launchermeta.mojang.com/mc/game/version_manifest.json	US	text	105 Kb	whitelisted
2356	javaw.exe	GET	301	104.31.81.246:80	http://api.skmedix.pl/v2/launcher/2.8/data	US	html	248 b	malicious
2356	javaw.exe	GET	200	13.32.159.218:80	http://launchermeta.mojang.com/v1/packages/132979c36455cc1e17e5f9cc767b4e13c6947033/1.14.4.json	US	text	34.2 Kb	whitelisted
2356	javaw.exe	GET	200	104.31.81.246:80	http://api.skmedix.pl/launcher/2.8/	US	text	100 b	malicious
2356	javaw.exe	GET	301	104.31.81.246:80	http://api.skmedix.pl/v2/launcher/2.8/data	US	html	248 b	malicious

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
2356	javaw.exe	104.31.81.246:443	api.skmedix.pl	Cloudflare Inc	US	shared
2356	javaw.exe	104.31.81.246:80	api.skmedix.pl	Cloudflare Inc	US	shared
2356	javaw.exe	104.31.80.246:443	api.skmedix.pl	Cloudflare Inc	US	shared
2356	javaw.exe	13.32.159.218:80	launchermeta.mojang.com	Amazon.com, Inc.	US	unknown
2356	javaw.exe	13.32.158.154:443	api.mojang.com	Amazon.com, Inc.	US	unknown

DNS requests

Domain	IP	Reputation
api.skmedix.pl	104.31.81.246 104.31.80.246	malicious
launchermeta.mojang.com	13.32.159.218	whitelisted
s1.skmedix.pl	104.31.80.246 104.31.81.246	suspicious
authserver.mojang.com	13.32.157.118	suspicious
api.mojang.com	13.32.158.154	whitelisted

Threats

No threats detected

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No debug info

General Info

SKlauncher 2.8.1.exe

5EA0A441AB5228F4EB0242EA99744B10

CC4FA46DFAA65200DAD3CCE66D40885E963E342D

4C5583870EB4ACBEBD42DEDF374359C0D7C20184F226B84AB2C3646FE9D1E3DA

12288:RKsxAXEFmaW3MrqAXPN/JYIwOkS7iWxp5MOg8ZgEom9rIwxCT:RLxYE8MrqYPwpjzEom9dQT

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

SUSPICIOUS

Creates files in the user directory

Executes JAVA applets

INFO

Dropped object may contain Bitcoin addresses

Malware configuration

Static information

TRiD

EXIF

EXE

Summary

DOS Header

PE Headers

Sections

Resources

Imports

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings