download:

AppCheckSetup.exe

Full analysis: https://app.any.run/tasks/fb57c457-bd55-491c-8e89-680ece72d8c1
Verdict: Malicious activity
Analysis date: June 08, 2018, 19:08:51
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, Nullsoft Installer self-extracting archive
MD5:

E35680FD6C38C8D7567E69B9FF6A42F5

SHA1:

EEE680BB3DCA4A340DD09F7774FBA03E670DF802

SHA256:

E927B4B690B0995DC8A51BAF480CAD4D4CC54F9F88E6B11FF85014321DC9847D

SSDEEP:

196608:oml8yho0AG00dfUbxXodUl2L0Jqg/fyed1mquLx4DE9+3V4YTGQF/L:omqv50dcb9oeUL0JXyIm7l9+FnGgz

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

      • AppCheckSetup.exe (PID: 3340)
      • AppCheck.exe (PID: 3320)
      • AppCheck.exe (PID: 2860)
      • AppCheckC.exe (PID: 3624)
      • AppCheckC.exe (PID: 3756)
      • AppCheckC.exe (PID: 708)
      • AppCheckS.exe (PID: 2288)
    • Application was dropped or rewritten from another process

      • AppCheck.exe (PID: 3320)
      • AppCheckC.exe (PID: 3624)
      • AppCheckC.exe (PID: 3756)
      • AppCheckC.exe (PID: 708)
      • AppCheckS.exe (PID: 2288)
      • AppCheck.exe (PID: 2860)
    • Changes the autorun value in the registry

      • AppCheckSetup.exe (PID: 3340)
    • Actions looks like stealing of personal data

      • AppCheckC.exe (PID: 3624)
    • Changes settings of System certificates

      • AppCheckC.exe (PID: 3756)
      • AppCheckSetup.exe (PID: 3340)
  • SUSPICIOUS

    • Creates files in the program directory

      • AppCheckSetup.exe (PID: 3340)
      • AppCheck.exe (PID: 3320)
      • AppCheck.exe (PID: 2860)
      • AppCheckC.exe (PID: 3624)
      • AppCheckC.exe (PID: 3756)
      • AppCheckS.exe (PID: 2288)
    • Adds / modifies Windows certificates

      • AppCheckSetup.exe (PID: 3340)
      • AppCheckC.exe (PID: 3756)
    • Creates or modifies windows services

      • AppCheckSetup.exe (PID: 3340)
      • AppCheck.exe (PID: 3320)
    • Creates files in the Windows directory

      • AppCheckSetup.exe (PID: 3340)
    • Creates a software uninstall entry

      • AppCheckSetup.exe (PID: 3340)
    • Executable content was dropped or overwritten

      • AppCheckSetup.exe (PID: 3340)
    • Starts application with an unusual extension

      • AppCheckSetup.exe (PID: 3340)
    • Starts SC.EXE for service management

      • ns33D3.tmp (PID: 3880)
  • INFO

    • Reads settings of System Certificates

      • AppCheck.exe (PID: 2860)
      • AppCheckS.exe (PID: 2288)
    • Dropped object may contain URL's

      • AppCheckSetup.exe (PID: 3340)
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: 2017:08:01 02:33:59+02:00
PEType: PE32
LinkerVersion: 6
CodeSize: 25600
InitializedDataSize: 141824
UninitializedDataSize: 2048
EntryPoint: 0x3489
OSVersion: 4
ImageVersion: 6
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 2.5.7.1
ProductVersionNumber: 2.5.7.1
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
CompanyName: CheckMAL Inc.
FileDescription: AppCheck Installer
LegalCopyright: © CheckMAL Inc. All rights reserved.
ProductName: AppCheck
ProductVersion: 2.5.7.1

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 01-Aug-2017 00:33:59
Detected languages:
  • English - United States
  • Japanese - Japan
  • Korean - Korea
CompanyName: CheckMAL Inc.
FileDescription: AppCheck 설치 프로그램
LegalCopyright: © CheckMAL Inc. All rights reserved.
ProductName: AppCheck
ProductVersion: 2.5.7.1

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: 0x000000D8

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 5
Time date stamp: 01-Aug-2017 00:33:59
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • 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
0x000063D1
0x00006400
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.47945
.rdata
0x00008000
0x0000138E
0x00001400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.14383
.data
0x0000A000
0x00020358
0x00000600
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
4.00074
.ndata
0x0002B000
0x0002D000
0x00000000
IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
.rsrc
0x00058000
0x00005DA8
0x00005E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.29871

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.2901
1072
UNKNOWN
English - United States
RT_MANIFEST
2
0
4264
UNKNOWN
English - United States
RT_ICON
3
0
1128
UNKNOWN
English - United States
RT_ICON
102
2.71813
180
UNKNOWN
English - United States
RT_DIALOG
103
2.46014
48
UNKNOWN
English - United States
RT_GROUP_ICON
105
2.68372
512
UNKNOWN
English - United States
RT_DIALOG
106
2.91148
248
UNKNOWN
English - United States
RT_DIALOG
107
2.52183
160
UNKNOWN
English - United States
RT_DIALOG
111
2.89887
238
UNKNOWN
English - United States
RT_DIALOG
202
2.62197
160
UNKNOWN
English - United States
RT_DIALOG

Imports

ADVAPI32.dll
COMCTL32.dll
GDI32.dll
KERNEL32.dll
SHELL32.dll
USER32.dll
ole32.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
46
Monitored processes
12
Malicious processes
8
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start appchecksetup.exe appcheck.exe no specs ns33d3.tmp no specs sc.exe no specs appchecks.exe explorer.exe no specs explorer.exe no specs appcheck.exe appcheckc.exe appcheckc.exe appcheckc.exe appchecksetup.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
708"C:\Program Files\CheckMAL\AppCheck\AppCheckC.exe" (null)C:\Program Files\CheckMAL\AppCheck\AppCheckC.exe
AppCheckS.exe
User:
admin
Company:
CheckMAL Inc.
Integrity Level:
HIGH
Description:
AppCheck Cleaner
Exit code:
0
Version:
2.5.7.1
Modules
Images
c:\program files\checkmal\appcheck\appcheckc.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\checkmal\appcheck\mfc140u.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\program files\checkmal\appcheck\vcruntime140.dll
1920"C:\Users\admin\AppData\Local\Temp\AppCheckSetup.exe" C:\Users\admin\AppData\Local\Temp\AppCheckSetup.exeexplorer.exe
User:
admin
Company:
CheckMAL Inc.
Integrity Level:
MEDIUM
Description:
AppCheck Installer
Exit code:
3221226540
Modules
Images
c:\users\admin\appdata\local\temp\appchecksetup.exe
c:\systemroot\system32\ntdll.dll
2288"C:\Program Files\CheckMAL\AppCheck\AppCheckS.exe"C:\Program Files\CheckMAL\AppCheck\AppCheckS.exe
services.exe
User:
SYSTEM
Company:
CheckMAL Inc.
Integrity Level:
SYSTEM
Description:
AppCheck Anti-Ransomware Service
Exit code:
0
Version:
2.5.7.1
Modules
Images
c:\program files\checkmal\appcheck\appchecks.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
2688C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -EmbeddingC:\Windows\explorer.exesvchost.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:\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\gdi32.dll
c:\windows\system32\user32.dll
2860"C:\Program Files\CheckMAL\AppCheck\AppCheck.exe" C:\Program Files\CheckMAL\AppCheck\AppCheck.exe
explorer.exe
User:
admin
Company:
CheckMAL Inc.
Integrity Level:
MEDIUM
Description:
AppCheck Anti-Ransomware
Exit code:
0
Version:
2.5.7.1
Modules
Images
c:\program files\checkmal\appcheck\appcheck.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\checkmal\appcheck\mfc140u.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\program files\checkmal\appcheck\vcruntime140.dll
3320"C:\Program Files\CheckMAL\AppCheck\AppCheck.exe" /RegisterC:\Program Files\CheckMAL\AppCheck\AppCheck.exeAppCheckSetup.exe
User:
admin
Company:
CheckMAL Inc.
Integrity Level:
HIGH
Description:
AppCheck Anti-Ransomware
Exit code:
0
Version:
2.5.7.1
Modules
Images
c:\program files\checkmal\appcheck\appcheck.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\checkmal\appcheck\mfc140u.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\program files\checkmal\appcheck\vcruntime140.dll
3340"C:\Users\admin\AppData\Local\Temp\AppCheckSetup.exe" C:\Users\admin\AppData\Local\Temp\AppCheckSetup.exe
explorer.exe
User:
admin
Company:
CheckMAL Inc.
Integrity Level:
HIGH
Description:
AppCheck Installer
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\appchecksetup.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
3476"C:\Windows\explorer.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\AppCheck\AppCheck Anti-Ransomware.lnk"C:\Windows\explorer.exeAppCheckSetup.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows Explorer
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\explorer.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\gdi32.dll
c:\windows\system32\user32.dll
3536C:\Windows\system32\sc start appcheckC:\Windows\system32\sc.exens33D3.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
A tool to aid in developing services for WindowsNT
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\sc.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
3624"C:\Program Files\CheckMAL\AppCheck\AppCheckC.exe" (null)C:\Program Files\CheckMAL\AppCheck\AppCheckC.exe
AppCheckS.exe
User:
admin
Company:
CheckMAL Inc.
Integrity Level:
HIGH
Description:
AppCheck Cleaner
Exit code:
0
Version:
2.5.7.1
Modules
Images
c:\program files\checkmal\appcheck\appcheckc.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\checkmal\appcheck\mfc140u.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\program files\checkmal\appcheck\vcruntime140.dll
Total events
644
Read events
538
Write events
102
Delete events
4

Modification events

(PID) Process:(3340) AppCheckSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\CheckMAL\AppCheck
Operation:writeName:
Value:
C:\Program Files\CheckMAL\AppCheck
(PID) Process:(3320) AppCheck.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\AppCheckD
Operation:writeName:DependOnService
Value:
FltMgr
(PID) Process:(3320) AppCheck.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\AppCheckD
Operation:writeName:Group
Value:
FSFilter Anti-Virus
(PID) Process:(3320) AppCheck.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\AppCheckD\Instances
Operation:writeName:DefaultInstance
Value:
AppCheckD Instance
(PID) Process:(3320) AppCheck.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\AppCheckD\Instances\AppCheckD Instance
Operation:writeName:Altitude
Value:
329180
(PID) Process:(3320) AppCheck.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\AppCheckD\Instances\AppCheckD Instance
Operation:writeName:Flags
Value:
0
(PID) Process:(3340) AppCheckSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\CheckMAL\AppCheck
Operation:writeName:ProductVersion
Value:
2.5.7.1
(PID) Process:(3340) AppCheckSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:AppCheck Tray
Value:
"C:\Program Files\CheckMAL\AppCheck\AppCheck.exe" /Tray
(PID) Process:(3340) AppCheckSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{8AE36751-D1AA-4021-A7D4-85909B56D610}
Operation:writeName:DisplayName
Value:
AppCheck Anti-Ransomware
(PID) Process:(3340) AppCheckSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{8AE36751-D1AA-4021-A7D4-85909B56D610}
Operation:writeName:DisplayVersion
Value:
2.5.7.1
Executable files
62
Suspicious files
5
Text files
5
Unknown types
10

Dropped files

PID
Process
Filename
Type
3340AppCheckSetup.exeC:\ProgramData\CheckMAL\AppCheck\aida.db
MD5:
SHA256:
3340AppCheckSetup.exeC:\Program Files\CheckMAL\AppCheck\AppCheckS.exeexecutable
MD5:
SHA256:
3340AppCheckSetup.exeC:\Program Files\CheckMAL\AppCheck\AppCheckC.exeexecutable
MD5:
SHA256:
3340AppCheckSetup.exeC:\Program Files\CheckMAL\AppCheck\AppCheckB.exeexecutable
MD5:
SHA256:
3340AppCheckSetup.exeC:\Program Files\CheckMAL\AppCheck\AppCheck.exeexecutable
MD5:
SHA256:
3340AppCheckSetup.exeC:\Users\admin\AppData\Local\Temp\nsa1638.tmp\System.dllexecutable
MD5:9625D5B1754BC4FF29281D415D27A0FD
SHA256:C2F405D7402F815D0C3FADD9A50F0BBBB1BAB9AA38FE347823478A2587299448
3340AppCheckSetup.exeC:\Users\admin\AppData\Local\Temp\nsa1638.tmp\modern-header.bmpimage
MD5:8C74C79C212E336DD9B003C16069D0CD
SHA256:6BCE5C53A89243173C7E7A204FCBBD3585090480B8C63D8419196D8637295212
3340AppCheckSetup.exeC:\Users\admin\AppData\Local\Temp\nsa1638.tmp\modern-wizard.bmpimage
MD5:321875395F1BDF15170E43816A4F362B
SHA256:E2D18CDA52521B57266C543A86FE8D26223E7B8C18029E3DF829D76DCC6A1104
3340AppCheckSetup.exeC:\Users\admin\AppData\Local\Temp\nsa1638.tmp\UserInfo.dllexecutable
MD5:A0EFE0F3EF127DCE9C59F407583061D9
SHA256:4506FF20DDC5EEFB21D690E954F52DF3DA46FA47EC263EA965D86A683E74DB40
3340AppCheckSetup.exeC:\Users\admin\AppData\Local\Temp\nsa1638.tmp\nsDialogs.dllexecutable
MD5:D2E45DD852A659E11897DF573832F381
SHA256:86C8EE210E6611383A634DCB8C60455063DDAE3D7ADCCBEACF3ADF7BF2A46676
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
5
DNS requests
2
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
3340
AppCheckSetup.exe
172.217.22.46:443
www.google-analytics.com
Google Inc.
US
whitelisted
2288
AppCheckS.exe
52.78.76.217:443
www.checkmal.com
Amazon.com, Inc.
KR
suspicious
3756
AppCheckC.exe
52.78.76.217:443
www.checkmal.com
Amazon.com, Inc.
KR
suspicious
2288
AppCheckS.exe
172.217.22.46:443
www.google-analytics.com
Google Inc.
US
whitelisted
2860
AppCheck.exe
52.78.76.217:443
www.checkmal.com
Amazon.com, Inc.
KR
suspicious

DNS requests

Domain
IP
Reputation
www.google-analytics.com
  • 172.217.22.46
whitelisted
www.checkmal.com
  • 52.78.76.217
suspicious

Threats

No threats detected
Process
Message
AppCheckC.exe
[CIPCServer::Finalize] Finalize
AppCheckC.exe
[2018-06-08 20:11:28.491][00708][02404][ERROR]CheckSingletone Failed.