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File name:

yxcalendar_v2.0.8.7_10002.exe

Full analysis: https://app.any.run/tasks/f9d6507d-08cb-4e40-98f4-dd6db5ad01a1
Verdict: Malicious activity
Analysis date: August 09, 2020, 00:06:44
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:

FCEC72D4615006846A08EFB3B8EE4F8C

SHA1:

0BB9666440D877ABDF3922A07FB7CEEF878FBBD0

SHA256:

AA5328D882E5CFE05452BC48EACB09746B071B3D3923F446922B18A6BF83EB1B

SSDEEP:

98304:7ktAiLr8vAEplOFBGIJF/LTqQXsTm4Hi9FxKiZsT0QPfQcgiJn9Wxf22pfG:7k67vAU+GIP/yQXs9WxK+Q1go6f9pO

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

    • Loads dropped or rewritten executable

      • yxcalendar_v2.0.8.7_10002.exe (PID: 2976)
      • YXCalendar.exe (PID: 1824)
      • explorer.exe (PID: 352)
      • SystemClockHookHost.exe (PID: 1324)
    • Application was dropped or rewritten from another process

      • SystemClockHookHost.exe (PID: 1324)
      • YXCalendar.exe (PID: 1824)
    • Changes the autorun value in the registry

      • YXCalendar.exe (PID: 1824)
  • SUSPICIOUS

    • Creates files in the user directory

      • yxcalendar_v2.0.8.7_10002.exe (PID: 2976)
    • Reads Internet Cache Settings

      • yxcalendar_v2.0.8.7_10002.exe (PID: 2976)
    • Creates a software uninstall entry

      • yxcalendar_v2.0.8.7_10002.exe (PID: 2976)
    • Executable content was dropped or overwritten

      • yxcalendar_v2.0.8.7_10002.exe (PID: 2976)
  • INFO

    No info indicators.
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) (42.2)
.exe | Win64 Executable (generic) (37.3)
.dll | Win32 Dynamic Link Library (generic) (8.8)
.exe | Win32 Executable (generic) (6)
.exe | Generic Win/DOS Executable (2.7)

EXIF

EXE

ProductVersion: 2.0.8.7
ProductName: 优效日历
LegalCopyright: Copyright (C) 2019
FileVersion: 2.0.8.7
FileDescription: 优效日历安装程序
CompanyName: 优效日历
CharacterSet: Windows, Chinese (Simplified)
LanguageCode: Chinese (Simplified)
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x0000
ProductVersionNumber: 2.0.8.7
FileVersionNumber: 2.0.8.7
Subsystem: Windows GUI
SubsystemVersion: 5
ImageVersion: 6
OSVersion: 5
EntryPoint: 0x3574
UninitializedDataSize: 2048
InitializedDataSize: 146944
CodeSize: 26624
LinkerVersion: 10
PEType: PE32
TimeStamp: 2014:01:10 02:49:34+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 10-Jan-2014 01:49:34
Detected languages:
  • Chinese - PRC
  • English - United States
CompanyName: 优效日历
FileDescription: 优效日历安装程序
FileVersion: 2.0.8.7
LegalCopyright: Copyright (C) 2019
ProductName: 优效日历
ProductVersion: 2.0.8.7

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: 0x000000E0

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 6
Time date stamp: 10-Jan-2014 01:49:34
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
0x00001000
0x000067EC
0x00006800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.49276
.rdata
0x00008000
0x00001926
0x00001A00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.90256
.data
0x0000A000
0x000205FC
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
1.41104
.ndata
0x0002B000
0x00026000
0x00000000
IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
.rsrc
0x00051000
0x000495A8
0x00049600
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.61527
.reloc
0x0009B000
0x00000BA2
0x00000C00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.369391

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.2266
957
UNKNOWN
English - United States
RT_MANIFEST
2
7.97878
62313
UNKNOWN
English - United States
RT_ICON
3
3.43219
38056
UNKNOWN
English - United States
RT_ICON
4
7.97086
30313
UNKNOWN
English - United States
RT_ICON
5
3.52662
26600
UNKNOWN
English - United States
RT_ICON
6
3.54082
21640
UNKNOWN
English - United States
RT_ICON
7
3.54787
16936
UNKNOWN
English - United States
RT_ICON
8
7.96185
12402
UNKNOWN
English - United States
RT_ICON
9
3.70098
9640
UNKNOWN
English - United States
RT_ICON
10
3.80096
6760
UNKNOWN
English - United States
RT_ICON

Imports

ADVAPI32.dll
COMCTL32.dll
GDI32.dll
KERNEL32.dll
SHELL32.dll
USER32.dll
VERSION.dll
ole32.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
42
Monitored processes
4
Malicious processes
2
Suspicious processes
1

Behavior graph

Click at the process to see the details
drop and start start yxcalendar_v2.0.8.7_10002.exe yxcalendar.exe systemclockhookhost.exe explorer.exe

Process information

PID
CMD
Path
Indicators
Parent process
2976"C:\Users\admin\AppData\Local\Temp\yxcalendar_v2.0.8.7_10002.exe" C:\Users\admin\AppData\Local\Temp\yxcalendar_v2.0.8.7_10002.exe
explorer.exe
User:
admin
Company:
优效日历
Integrity Level:
MEDIUM
Description:
优效日历安装程序
Exit code:
0
Version:
2.0.8.7
1824C:\Users\admin\AppData\Local\优效日历\YXCalendar.exe --show-welcomeC:\Users\admin\AppData\Local\优效日历\YXCalendar.exe
yxcalendar_v2.0.8.7_10002.exe
User:
admin
Company:
优效日历
Integrity Level:
MEDIUM
Description:
优效日历
Version:
2.0.8.7
1324"C:\Users\admin\AppData\Local\优效日历\SystemClockHookHost.exe" C:\Users\admin\AppData\Local\优效日历\SystemClockHookHost.exe
YXCalendar.exe
User:
admin
Company:
优效日历
Integrity Level:
MEDIUM
Description:
优效日历托盘时钟辅助程序
Version:
2.0.8.7
352C:\Windows\Explorer.EXEC:\Windows\explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Explorer
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Total events
2 514
Read events
2 448
Write events
0
Delete events
0

Modification events

No data
Executable files
16
Suspicious files
6
Text files
14
Unknown types
5

Dropped files

PID
Process
Filename
Type
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\data.dat
MD5:
SHA256:
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\Temp\nsl194D.tmp\System.dllexecutable
MD5:535501F2CEC26BECB4C704E6C54604BD
SHA256:6887E6328885D1CB97ABB9F87418AE722103F6B909CDFDC2C30F7C3493DE4B88
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\SystemClockHookHost.exeexecutable
MD5:1DE6CF8EDDAEE0B23754B690BFBCA16C
SHA256:02850929F567547C7B6DD1E8A93660B3B0D58306393DBB0F9C5FE501492D80A9
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\SystemClockHook.dllexecutable
MD5:013432482768D5B401B38B8227C10E6F
SHA256:9DA94ABC529AB8C34F78C5877AE9E7A61E5F2AC663ED0B6F07E9C4B3BD793B06
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\CrashReport.exeexecutable
MD5:97DA3DAAEE1ECBDC607A15CE5C8112F6
SHA256:C0218510EEA029381598C8AE81EAE2EA2275D2C67E8776A214690DF7272B82BC
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\YXCalendar.exeexecutable
MD5:E7DB6F18AF8B618D3103270198D4C03C
SHA256:2744CEE117690F1C21CC9A8BB0377042B66441AC2AE0B1B13065AB64A3F0C78F
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\Temp\nsl194D.tmp\nsDialogs.dllexecutable
MD5:3B564844C7922642B206911DD24FF2C9
SHA256:BD2AE551C88F9891AAFCB457DBC3E5AE14CDAD1B5A5C38C87EE0DD51B2CADD1B
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\SystemClockHook_x64.dllexecutable
MD5:07AEC232D9FCD246CA0C3B2BE1133C99
SHA256:B75BECA91B42842EF79C3945CEDF328B94CBB223CD9177F0EE7F5D0A2F965F27
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\YXUpdate.exeexecutable
MD5:FE784B8E86ED54C9A579F2D8E7BF464C
SHA256:110CC2F4E0E80A39F17EE5F139FDE2D830637910E481967FD4848107D678EB95
2976yxcalendar_v2.0.8.7_10002.exeC:\Users\admin\AppData\Local\优效日历\SystemTimeSyncService.exeexecutable
MD5:F324E0C15B6AAEC0134EA962B97AC97A
SHA256:422F979A3E4AC275890B9A913A9267E8394AF9CC28C90EC8DCD6F103CA606181
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
6
DNS requests
4
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2976
yxcalendar_v2.0.8.7_10002.exe
GET
200
93.184.220.29:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSXi0cW5bD2WLrmnasWibg2OuPDpgQUVXRPsnJP9WC6UNHX5lFcmgGHGtcCEAE%2FwfSJdvj51k8IPdWay%2BU%3D
US
der
471 b
whitelisted
2976
yxcalendar_v2.0.8.7_10002.exe
GET
200
93.184.220.29:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ5rEWLwbJFq%2FmAU80sm7E%3D
US
der
471 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
1824
YXCalendar.exe
120.27.2.251:443
www.tianqiapi.com
Hangzhou Alibaba Advertising Co.,Ltd.
CN
unknown
2976
yxcalendar_v2.0.8.7_10002.exe
120.79.25.73:443
www.youxiao.cn
Hangzhou Alibaba Advertising Co.,Ltd.
CN
unknown
1824
YXCalendar.exe
120.79.25.73:443
www.youxiao.cn
Hangzhou Alibaba Advertising Co.,Ltd.
CN
unknown
2976
yxcalendar_v2.0.8.7_10002.exe
93.184.220.29:80
ocsp.digicert.com
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted
1824
YXCalendar.exe
221.204.166.38:443
api.6463.com
CHINA UNICOM China169 Backbone
CN
malicious

DNS requests

Domain
IP
Reputation
www.youxiao.cn
  • 120.79.25.73
unknown
ocsp.digicert.com
  • 93.184.220.29
whitelisted
api.6463.com
  • 221.204.166.38
  • 221.204.166.81
  • 218.11.11.245
  • 121.29.54.195
  • 221.204.166.24
  • 113.1.0.63
  • 220.194.87.190
  • 220.194.223.71
  • 42.56.79.189
  • 123.6.2.108
  • 218.11.11.246
  • 220.194.223.87
  • 221.204.166.36
  • 221.204.166.20
  • 113.1.0.98
malicious
www.tianqiapi.com
  • 120.27.2.251
unknown

Threats

No threats detected
Process
Message
YXCalendar.exe
WM_TOUCH Register OK
YXCalendar.exe
SystemClockHookHost.exe
YXCalendar.exe
yxcalendar isHookHostRun:0 isInjectExplorer:0
YXCalendar.exe
YXCalendar Start DownloadThread
YXCalendar.exe
ScaleWindow DPI:96
YXCalendar.exe
--show-welcome
SystemClockHookHost.exe
SystemClockHook.dll
SystemClockHookHost.exe
CLOCK DLL_PROCESS_ATTACH PROCESS_ID:1324
SystemClockHookHost.exe
CLOCK InitMappingFile PROCESS_ID:1324 ClockHWND:10050
SystemClockHookHost.exe
CLOCK Clock_Inject