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File name:

C:\Users\admin\AppData\Roaming\Microsoft\Windows\Templates\libGTPK1.dll

Full analysis: https://app.any.run/tasks/d202faf9-ef6e-41d4-a57d-29f110c69be5
Verdict: Malicious activity
Analysis date: October 09, 2019, 14:55:50
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (DLL) (console) Intel 80386, for MS Windows
MD5:

C56A8B116EBB81E803DA89C4259C7123

SHA1:

4EF68D0769671837C55B0A247F199F8E9CAFB944

SHA256:

912CFE0AFC99C17736640F4E780D2A09BEE423AFC3900AA40C42F3A72368B903

SSDEEP:

6144:Zcnh2D2ignpoKuqBpKxHrOU3xzLqTBYjbfGZuMcsy9:ZcngSigpoTkKN/zLYBYPGc

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

    • Changes the autorun value in the registry

      • reg.exe (PID: 2344)

  • SUSPICIOUS

    • Application launched itself

      • Skype.exe (PID: 3980)
      • Skype.exe (PID: 2232)
      • Skype.exe (PID: 3036)

    • Reads CPU info

      • Skype.exe (PID: 3036)

    • Creates files in the user directory

      • Skype.exe (PID: 3980)
      • Skype.exe (PID: 3036)
      • Skype.exe (PID: 2232)

    • Modifies the open verb of a shell class

      • Skype.exe (PID: 3036)

    • Uses REG.EXE to modify Windows registry

      • Skype.exe (PID: 3036)

  • INFO

    • Loads main object executable

      • rundll32.exe (PID: 2920)

    • Manual execution by user

      • WINWORD.EXE (PID: 3692)
      • Skype.exe (PID: 3036)
      • WINWORD.EXE (PID: 2840)

    • Creates files in the user directory

      • WINWORD.EXE (PID: 3692)
      • WINWORD.EXE (PID: 2840)

    • Reads the hosts file

      • Skype.exe (PID: 3036)

    • Reads Microsoft Office registry keys

      • WINWORD.EXE (PID: 3692)
      • WINWORD.EXE (PID: 2840)

    • Reads settings of System Certificates

      • Skype.exe (PID: 3036)

    • Dropped object may contain Bitcoin addresses

      • Skype.exe (PID: 3036)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win64 Executable (generic) (64.6)
.dll | Win32 Dynamic Link Library (generic) (15.4)
.exe | Win32 Executable (generic) (10.5)
.exe | Generic Win/DOS Executable (4.6)
.exe | DOS Executable Generic (4.6)

EXIF

EXE

Subsystem: Windows command line
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x1f00
UninitializedDataSize: -
InitializedDataSize: 282624
CodeSize: 8192
LinkerVersion: 7.1
PEType: PE32
TimeStamp: 2017:10:08 22:12:37+02:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_CUI
Compilation Date: 08-Oct-2017 20:12:37
Detected languages:
  • English - United States

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: 0x000000F8

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 6
Time date stamp: 08-Oct-2017 20:12:37
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_DLL
  • IMAGE_FILE_EXECUTABLE_IMAGE
  • IMAGE_FILE_LINE_NUMS_STRIPPED
  • IMAGE_FILE_LOCAL_SYMS_STRIPPED

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x000016D4
0x00002000
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
4.96728
.rdata
0x00003000
0x00000650
0x00001000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
2.46098
.data
0x00004000
0x00040AE0
0x0003E000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
5.47627
.tls
0x00045000
0x00000024
0x00001000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0.00328186
.rsrc
0x00046000
0x000001F8
0x00001000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
0.999345
.reloc
0x00047000
0x00000388
0x00001000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.558562

Resources

Title
Entropy
Size
Codepage
Language
Type
1
4.89724
405
UNKNOWN
English - United States
RT_MANIFEST

Imports

KERNEL32.dll
MSVCRT.dll
USER32.dll
msi.dll
ole32.dll

Exports

Title
Ordinal
Address
task
1
0x000020B0
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
49
Monitored processes
13
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start rundll32.exe no specs winword.exe no specs winword.exe no specs skype.exe skype.exe reg.exe skype.exe no specs reg.exe no specs skype.exe skype.exe no specs skype.exe skype.exe no specs skype.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2920"C:\Windows\System32\rundll32.exe" "C:\Users\admin\AppData\Local\Temp\libGTPK1.dll", taskC:\Windows\System32\rundll32.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows host process (Rundll32)
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2840"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\Desktop\proteinwednesday.rtf"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Word
Exit code:
0
Version:
14.0.6024.1000
3692"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\Desktop\calldefined.rtf"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Word
Exit code:
0
Version:
14.0.6024.1000
3036"C:\Program Files\Microsoft\Skype for Desktop\Skype.exe" C:\Program Files\Microsoft\Skype for Desktop\Skype.exe
explorer.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Version:
8.29.0.50
3284"C:\Program Files\Microsoft\Skype for Desktop\Skype.exe" --reporter-url=https://rink.hockeyapp.net/api/2/apps/a741743329d94bc08826af367733939d/crashes/upload --application-name=skype-preview "--crashes-directory=C:\Users\admin\AppData\Local\Temp\skype-preview Crashes" --v=1C:\Program Files\Microsoft\Skype for Desktop\Skype.exe
Skype.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Version:
8.29.0.50
2344C:\Windows\system32\reg.exe ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Skype for Desktop" /t REG_SZ /d "C:\Program Files\Microsoft\Skype for Desktop\Skype.exe" /fC:\Windows\system32\reg.exe
Skype.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
3980"C:\Program Files\Microsoft\Skype for Desktop\Skype.exe" --type=renderer --ms-disable-indexeddb-transaction-timeout --no-sandbox --service-pipe-token=98712E13BE69653778333C17A026E7D5 --lang=en-US --app-user-model-id=Microsoft.Skype.SkypeDesktop --app-path="C:\Program Files\Microsoft\Skype for Desktop\resources\app.asar" --node-integration=false --webview-tag=true --no-sandbox --preload="C:\Program Files\Microsoft\Skype for Desktop\resources\app.asar\Preload.js" --context-id=2 --enable-pinch --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553 --disable-accelerated-video-decode --disable-gpu-compositing --enable-gpu-async-worker-context --service-request-channel-token=98712E13BE69653778333C17A026E7D5 --renderer-client-id=3 --mojo-platform-channel-handle=1540 /prefetch:1C:\Program Files\Microsoft\Skype for Desktop\Skype.exe—Skype.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Exit code:
0
Version:
8.29.0.50
2132C:\Windows\system32\reg.exe QUERY HKCU\Software\Microsoft\Skype /v RestartForUpdateC:\Windows\system32\reg.exe—Skype.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2616"C:\Program Files\Microsoft\Skype for Desktop\Skype.exe" --reporter-url=https://rink.hockeyapp.net/api/2/apps/a741743329d94bc08826af367733939d/crashes/upload --application-name=skype-preview "--crashes-directory=C:\Users\admin\AppData\Local\Temp\skype-preview Crashes" --v=1C:\Program Files\Microsoft\Skype for Desktop\Skype.exe
Skype.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Exit code:
2
Version:
8.29.0.50
2232"C:\Program Files\Microsoft\Skype for Desktop\Skype.exe" --type=renderer --ms-disable-indexeddb-transaction-timeout --no-sandbox --service-pipe-token=1A838FBA5DC8026632DEDF1E42E63250 --lang=en-US --app-user-model-id=Microsoft.Skype.SkypeDesktop --app-path="C:\Program Files\Microsoft\Skype for Desktop\resources\app.asar" --node-integration=false --webview-tag=true --no-sandbox --preload="C:\Program Files\Microsoft\Skype for Desktop\resources\app.asar\Preload.js" --context-id=1 --enable-pinch --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553 --disable-accelerated-video-decode --disable-gpu-compositing --enable-gpu-async-worker-context --service-request-channel-token=1A838FBA5DC8026632DEDF1E42E63250 --renderer-client-id=4 --mojo-platform-channel-handle=2280 /prefetch:1C:\Program Files\Microsoft\Skype for Desktop\Skype.exe—Skype.exe
User:
admin
Company:
Skype Technologies S.A.
Integrity Level:
MEDIUM
Description:
Skype
Version:
8.29.0.50
Total events
1 447
Read events
1 264
Write events
0
Delete events
0

Modification events

No data
Executable files
0
Suspicious files
6
Text files
21
Unknown types
6

Dropped files

PID
Process
Filename
Type
2840WINWORD.EXEC:\Users\admin\AppData\Local\Temp\CVR7A3E.tmp.cvr —
MD5:—
SHA256:—
2840WINWORD.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{40BBCB50-6B76-47B7-B7FB-88C98C4513BB}.tmp —
MD5:—
SHA256:—
2840WINWORD.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{2F0252FB-97BF-494E-9D3D-E743E8415B12}.tmp —
MD5:—
SHA256:—
3692WINWORD.EXEC:\Users\admin\AppData\Local\Temp\CVR9F5A.tmp.cvr —
MD5:—
SHA256:—
3692WINWORD.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{7EE1FA1D-D2F6-476A-8711-1FB705F92E65}.tmp —
MD5:—
SHA256:—
3692WINWORD.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{BB057F1A-EA85-4770-B236-B0D6D9DB7ABF}.tmp —
MD5:—
SHA256:—
3036Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\MX2DELM2PZ0XVB4STPVU.temp —
MD5:—
SHA256:—
2840WINWORD.EXEC:\Users\admin\AppData\Roaming\Microsoft\Office\Recent\index.dattext
MD5:B50C0C508BE3F9ACBF7C76CB3EB6D892
SHA256:E4F2080840D02DB795C465D78169703271FCD2D5566C41166E284E8A3130D00D
2840WINWORD.EXEC:\Users\admin\AppData\Roaming\Microsoft\Templates\~$Normal.dotmpgc
MD5:69BB15B23606E80D9C7F1AA0C1ADBB1F
SHA256:2943EDC5B88BE1FD3643AE162D558C1957AD694571C4F475A23E9F366B48719B
3036Skype.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b916037c1e115fe0.customDestinations-msbinary
MD5:CAC4DBB904990DA71C1E405605156F11
SHA256:0BA71EDDC939D74DB08B1035DC96EDCB4669B98C7168BA579EE2498253C37EF8
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
15
DNS requests
12
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
3036
Skype.exe
216.58.208.42:443
www.googleapis.com
Google Inc.
US
whitelisted
3036
Skype.exe
152.199.19.160:443
bot-framework.azureedge.net
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted
3036
Skype.exe
13.107.3.128:443
a.config.skype.com
Microsoft Corporation
US
whitelisted
3036
Skype.exe
13.68.117.223:443
avatar.skype.com
Microsoft Corporation
US
whitelisted
3036
Skype.exe
13.90.95.57:443
get.skype.com
Microsoft Corporation
US
whitelisted
—
—
2.18.233.81:443
download.skype.com
Akamai International B.V.
—
whitelisted
3036
Skype.exe
13.107.246.10:443
logincdn.msauth.net
Microsoft Corporation
US
whitelisted
3036
Skype.exe
52.114.74.45:443
browser.pipe.aria.microsoft.com
Microsoft Corporation
NL
unknown
3036
Skype.exe
52.114.7.37:443
pipe.skype.com
Microsoft Corporation
HK
unknown
3036
Skype.exe
40.90.137.125:443
login.live.com
Microsoft Corporation
US
unknown

DNS requests

Domain
IP
Reputation
get.skype.com
  • 13.90.95.57
whitelisted
a.config.skype.com
  • 13.107.3.128
whitelisted
pipe.skype.com
  • 52.114.7.37
whitelisted
www.googleapis.com
  • 216.58.208.42
  • 172.217.22.74
  • 172.217.21.202
  • 172.217.21.234
  • 172.217.22.10
  • 172.217.18.170
  • 216.58.206.10
  • 172.217.23.106
  • 216.58.207.74
whitelisted
avatar.skype.com
  • 13.68.117.223
whitelisted
bot-framework.azureedge.net
  • 152.199.19.160
whitelisted
config.edge.skype.com
  • 13.107.3.128
whitelisted
login.live.com
  • 40.90.137.125
  • 40.90.23.206
  • 40.90.137.120
whitelisted
logincdn.msauth.net
  • 13.107.246.10
whitelisted
browser.pipe.aria.microsoft.com
  • 52.114.74.45
whitelisted

Threats

No threats detected
Process
Message
Skype.exe
[2616:2056:1009/155638.497:VERBOSE1:crash_service_main.cc(78)] Session start. cmdline is [--reporter-url=https://rink.hockeyapp.net/api/2/apps/a741743329d94bc08826af367733939d/crashes/upload --application-name=skype-preview "--crashes-directory=C:\Users\admin\AppData\Local\Temp\skype-preview Crashes" --v=1]
Skype.exe
[2616:2056:1009/155638.497:VERBOSE1:crash_service.cc(145)] window handle is 0006014A
Skype.exe
[2616:2056:1009/155638.500:VERBOSE1:crash_service.cc(300)] pipe name is \\.\pipe\skype-preview Crash Service dumps at C:\Users\admin\AppData\Local\Temp\skype-preview Crashes
Skype.exe
[2616:2056:1009/155638.500:VERBOSE1:crash_service.cc(304)] checkpoint is C:\Users\admin\AppData\Local\Temp\skype-preview Crashes\crash_checkpoint.txt server is https://rink.hockeyapp.net/api/2/apps/a741743329d94bc08826af367733939d/crashes/upload maximum 128 reports/day reporter is electron-crash-service
Skype.exe
[2616:2056:1009/155638.504:ERROR:crash_service.cc(311)] could not start dumper
Skype.exe
[4044:3992:1009/155643.464:VERBOSE1:crash_service_main.cc(78)] Session start. cmdline is [--reporter-url=https://rink.hockeyapp.net/api/2/apps/a741743329d94bc08826af367733939d/crashes/upload --application-name=skype-preview "--crashes-directory=C:\Users\admin\AppData\Local\Temp\skype-preview Crashes" --v=1]
Skype.exe
[4044:3992:1009/155643.465:VERBOSE1:crash_service.cc(145)] window handle is 00050152
Skype.exe
[4044:3992:1009/155643.465:VERBOSE1:crash_service.cc(300)] pipe name is \\.\pipe\skype-preview Crash Service dumps at C:\Users\admin\AppData\Local\Temp\skype-preview Crashes
Skype.exe
[4044:3992:1009/155643.465:VERBOSE1:crash_service.cc(304)] checkpoint is C:\Users\admin\AppData\Local\Temp\skype-preview Crashes\crash_checkpoint.txt server is https://rink.hockeyapp.net/api/2/apps/a741743329d94bc08826af367733939d/crashes/upload maximum 128 reports/day reporter is electron-crash-service
Skype.exe
[4044:3992:1009/155643.465:ERROR:crash_service.cc(311)] could not start dumper
Interactive malware hunting service ANY.RUN
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Reports
C:\Users\admin\AppData\Roaming\Microsoft\Windows\Templates\libGTPK1.dll