download:

mail.exe

Full analysis: https://app.any.run/tasks/fccddc78-effa-4132-bcbd-881b74bf1173
Verdict: Malicious activity
Analysis date: March 21, 2019, 15:31:57
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:

4ED3D1E96628A31DCED4A04A3F2E7AB1

SHA1:

A19915DCDC8F81E24CD2C80AA6F4A94DF525EA4A

SHA256:

E7456269063FB02ED13722FE583F2A9DF6EB3DDC3438A7F63F817E22701AFEE3

SSDEEP:

786432:oLAC6Dk6XMz/kdg6VIk9agHhkFDKcIIZv1qAbrP+o18:osC6XMzurVl9NHhcKcboAb6t

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

    • Application was dropped or rewritten from another process

      • setup.exe (PID: 1588)
      • setup.exe (PID: 1624)
      • mailmaster.exe (PID: 2240)
      • mailmaster.exe (PID: 428)
    • Loads dropped or rewritten executable

      • setup.exe (PID: 1588)
      • svchost.exe (PID: 872)
      • mailmaster.exe (PID: 428)
      • mailmaster.exe (PID: 2240)
    • Changes the autorun value in the registry

      • setup.exe (PID: 1588)
  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • mail.exe (PID: 3936)
      • setup.exe (PID: 1588)
    • Application launched itself

      • setup.exe (PID: 1624)
      • mailmaster.exe (PID: 2240)
    • Creates COM task schedule object

      • setup.exe (PID: 1588)
    • Creates a software uninstall entry

      • setup.exe (PID: 1588)
    • Modifies the open verb of a shell class

      • setup.exe (PID: 1588)
    • Connects to unusual port

      • mailmaster.exe (PID: 2240)
    • Creates files in the program directory

      • setup.exe (PID: 1588)
    • Creates files in the user directory

      • setup.exe (PID: 1588)
  • INFO

    • Dropped object may contain Bitcoin addresses

      • setup.exe (PID: 1588)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable (generic) (52.9)
.exe | Generic Win/DOS Executable (23.5)
.exe | DOS Executable Generic (23.5)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2019:03:04 10:33:26+01:00
PEType: PE32
LinkerVersion: 14
CodeSize: 10752
InitializedDataSize: 29684736
UninitializedDataSize: -
EntryPoint: 0x2329
OSVersion: 5.1
ImageVersion: -
SubsystemVersion: 5.1
Subsystem: Windows GUI
FileVersionNumber: 4.12.2.1001
ProductVersionNumber: 4.12.2.1001
FileFlagsMask: 0x0017
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
CompanyName: NetEase(Hangzhou) Network Co. Ltd.
FileDescription: 网易邮箱大师安装程序
FileVersion: 4.12.2.1001
InternalName: mini_installer
LegalCopyright: Copyright (C) 2019 NetEase. All rights reserved.
ProductName: 网易邮箱大师安装程序
ProductVersion: 4.12.2.1001
CompanyShortName: NetEase
ProductShortName: 网易邮箱大师安装程序
OfficialBuild: -

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 04-Mar-2019 09:33:26
Detected languages:
  • English - United States
Debug artifacts:
  • e:\mailmaster\mailmaster\src\chromium\out\Release\mini_installer.exe.pdb
CompanyName: NetEase(Hangzhou) Network Co. Ltd.
FileDescription: 网易邮箱大师安装程序
FileVersion: 4.12.2.1001
InternalName: mini_installer
LegalCopyright: Copyright (C) 2019 NetEase. All rights reserved.
ProductName: 网易邮箱大师安装程序
ProductVersion: 4.12.2.1001
CompanyShortName: NetEase
ProductShortName: 网易邮箱大师安装程序
Official Build: 0

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: 0x000000E8

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 6
Time date stamp: 04-Mar-2019 09:33:26
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_LARGE_ADDRESS_AWARE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x000029C0
0x00002A00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.05921
.data
0x00004000
0x0000035C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0.220113
.idata
0x00005000
0x00000670
0x00000800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.41893
.gfids
0x00006000
0x00000004
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
0.0203931
.rsrc
0x00007000
0x01C4E130
0x01C4E200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
7.99955
.reloc
0x01C56000
0x00000258
0x00000400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
4.56314

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.30502
1003
UNKNOWN
English - United States
RT_MANIFEST
2
4.27613
2216
UNKNOWN
English - United States
RT_ICON
3
3.07864
1384
UNKNOWN
English - United States
RT_ICON
4
7.95961
15986
UNKNOWN
English - United States
RT_ICON
5
4.37789
38056
UNKNOWN
English - United States
RT_ICON
6
4.43517
26600
UNKNOWN
English - United States
RT_ICON
7
4.44045
21640
UNKNOWN
English - United States
RT_ICON
8
4.46174
16936
UNKNOWN
English - United States
RT_ICON
9
4.65933
9640
UNKNOWN
English - United States
RT_ICON
10
4.8588
4264
UNKNOWN
English - United States
RT_ICON

Imports

ADVAPI32.dll
KERNEL32.dll
SHELL32.dll (delay-loaded)
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
40
Monitored processes
6
Malicious processes
3
Suspicious processes
2

Behavior graph

Click at the process to see the details
drop and start start mail.exe setup.exe setup.exe svchost.exe mailmaster.exe mailmaster.exe

Process information

PID
CMD
Path
Indicators
Parent process
428"C:\Program Files\Netease\MailMaster\Application\mailmaster.exe" --type=utility --channel="2240.0.469226891\1185698437" --lang=en-US --no-sandbox --lang=zh-CN --log-file="C:\Users\admin\AppData\Local\Netease\MailMaster\logs\web.log" --product-version="Chrome/49.0.2623.110 MailMasterPC/4.12.2.1001" /prefetch:8C:\Program Files\Netease\MailMaster\Application\mailmaster.exe
mailmaster.exe
User:
admin
Company:
NetEase(Hangzhou) Network Co. Ltd.
Integrity Level:
MEDIUM
Description:
网易邮箱大师
Exit code:
0
Version:
4.12.2.1001
Modules
Images
c:\program files\netease\mailmaster\application\mailmaster.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\iphlpapi.dll
c:\windows\system32\nsi.dll
872C:\Windows\system32\svchost.exe -k netsvcsC:\Windows\System32\svchost.exe
services.exe
User:
SYSTEM
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Host Process for Windows Services
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\svchost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\ole32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
1588"C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exe" --install-archive="C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\MAILMASTER.PACKED.7Z" --verbose-logging --mini_installer="C:\Users\admin\AppData\Local\Temp\mail.exe" --run-as-admin --system-levelC:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exe
setup.exe
User:
admin
Company:
NetEase(Hangzhou) Network Co. Ltd.
Integrity Level:
HIGH
Description:
网易邮箱大师安装程序
Exit code:
62
Version:
4.12.2.1001
Modules
Images
c:\users\admin\appdata\local\temp\cr_0dd30.tmp\setup.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\psapi.dll
c:\windows\system32\user32.dll
1624"C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exe" --install-archive="C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\MAILMASTER.PACKED.7Z" --verbose-logging --mini_installer="C:\Users\admin\AppData\Local\Temp\mail.exe"C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exe
mail.exe
User:
admin
Company:
NetEase(Hangzhou) Network Co. Ltd.
Integrity Level:
MEDIUM
Description:
网易邮箱大师安装程序
Exit code:
0
Version:
4.12.2.1001
Modules
Images
c:\users\admin\appdata\local\temp\cr_0dd30.tmp\setup.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\psapi.dll
c:\windows\system32\user32.dll
2240"C:\Program Files\Netease\MailMaster\Application\mailmaster.exe" --setup-first-runC:\Program Files\Netease\MailMaster\Application\mailmaster.exe
setup.exe
User:
admin
Company:
NetEase(Hangzhou) Network Co. Ltd.
Integrity Level:
MEDIUM
Description:
网易邮箱大师
Exit code:
0
Version:
4.12.2.1001
Modules
Images
c:\program files\netease\mailmaster\application\mailmaster.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\iphlpapi.dll
c:\windows\system32\nsi.dll
3936"C:\Users\admin\AppData\Local\Temp\mail.exe" C:\Users\admin\AppData\Local\Temp\mail.exe
explorer.exe
User:
admin
Company:
NetEase(Hangzhou) Network Co. Ltd.
Integrity Level:
MEDIUM
Description:
网易邮箱大师安装程序
Exit code:
0
Version:
4.12.2.1001
Modules
Images
c:\users\admin\appdata\local\temp\mail.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
Total events
1 148
Read events
1 060
Write events
88
Delete events
0

Modification events

(PID) Process:(1624) setup.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(1624) setup.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(872) svchost.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-1302019708-1500728564-335382590-1000
Operation:writeName:RefCount
Value:
3
(PID) Process:(872) svchost.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-1302019708-1500728564-335382590-1000
Operation:writeName:RefCount
Value:
2
(PID) Process:(1588) setup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Netease\Mailmaster\Update\ClientState\{5B513460-F99B-4E9C-93EE-22F86FE2B1A8}
Operation:writeName:UninstallString
Value:
C:\Program Files\Netease\MailMaster\Application\4.12.2.1001\Installer\setup.exe
(PID) Process:(1588) setup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Netease\Mailmaster\Update\ClientState\{5B513460-F99B-4E9C-93EE-22F86FE2B1A8}
Operation:writeName:UninstallArguments
Value:
--uninstall --verbose-logging --system-level --verbose-logging
(PID) Process:(1588) setup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MailMaster
Operation:writeName:DisplayName
Value:
网易邮箱大师
(PID) Process:(1588) setup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MailMaster
Operation:writeName:UninstallString
Value:
"C:\Program Files\Netease\MailMaster\Application\4.12.2.1001\Installer\setup.exe" --uninstall --verbose-logging --system-level --verbose-logging
(PID) Process:(1588) setup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MailMaster
Operation:writeName:InstallLocation
Value:
C:\Program Files\Netease\MailMaster\Application
(PID) Process:(1588) setup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MailMaster
Operation:writeName:DisplayIcon
Value:
C:\Program Files\Netease\MailMaster\Application\mailmaster.exe,0
Executable files
10
Suspicious files
59
Text files
118
Unknown types
9

Dropped files

PID
Process
Filename
Type
3936mail.exeC:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\MAILMASTER.PACKED.7Z
MD5:
SHA256:
3936mail.exeC:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\SETUP.EX_
MD5:
SHA256:
1588setup.exeC:\Program Files\Netease\MailMaster\Temp\source1588_22085\mailmaster.7z
MD5:
SHA256:
1588setup.exeC:\Program Files\Netease\MailMaster\Temp\source1588_22085\MailMaster-bin\4.12.2.1001\icudtl.dat
MD5:
SHA256:
1588setup.exeC:\Program Files\Netease\MailMaster\Temp\source1588_22085\MailMaster-bin\4.12.2.1001\libcef.dll
MD5:
SHA256:
3936mail.exeC:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exeexecutable
MD5:
SHA256:
1588setup.exeC:\Program Files\Netease\MailMaster\Temp\source1588_22085\MailMaster-bin\4.12.2.1001\libegl.dllexecutable
MD5:
SHA256:
1588setup.exeC:\Program Files\Netease\MailMaster\Temp\source1588_22085\MailMaster-bin\4.12.2.1001\d3dcompiler_47.dllexecutable
MD5:8D5695F0B0A0330FE07802E4F3576B15
SHA256:A3A79C73A56E0C0E192E3A8FAE32EEAA1F9F0F7B42FA86C92B6A737196D261C4
1588setup.exeC:\Program Files\Netease\MailMaster\Temp\source1588_22085\MailMaster-bin\4.12.2.1001\data\translation.binbinary
MD5:15F6F21869DBA8414B14A0BAEC7FCCFC
SHA256:9CAB6B0925E4F79CB5ABBE0A741D99C1724FAD6EDC514661CDECBC9C48AD9E8A
872svchost.exeC:\Windows\appcompat\programs\RecentFileCache.bcftxt
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
14
DNS requests
6
Threats
1

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2240
mailmaster.exe
GET
123.58.182.105:80
http://update.client.163.com/apptrack/confinfo/searchbyappid.do?appid=10&appver=4.12.2
CN
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2240
mailmaster.exe
103.129.252.32:9800
lbs.client.163.com
unknown
2240
mailmaster.exe
123.125.50.97:443
appconf.mail.163.com
China Unicom Beijing Province Network
CN
unknown
2240
mailmaster.exe
123.58.182.105:80
client.mail.163.com
Guangzhou NetEase Computer System Co., Ltd.
CN
unknown
2240
mailmaster.exe
103.129.252.31:9800
lbs.client.163.com
unknown
2240
mailmaster.exe
103.129.252.31:8080
lbs.client.163.com
unknown
2240
mailmaster.exe
123.58.182.103:443
client.mail.163.com
Guangzhou NetEase Computer System Co., Ltd.
CN
unknown

DNS requests

Domain
IP
Reputation
lbs.client.163.com
  • 103.129.252.31
  • 103.129.252.32
unknown
client.mail.163.com
  • 123.58.182.103
  • 123.58.182.102
  • 123.58.182.105
unknown
update.client.163.com
  • 123.58.182.105
  • 123.58.182.102
  • 123.58.182.103
whitelisted
appconf.mail.163.com
  • 123.125.50.97
malicious

Threats

PID
Process
Class
Message
2240
mailmaster.exe
Generic Protocol Command Decode
SURICATA STREAM CLOSEWAIT FIN out of window
Process
Message
setup.exe
[1624:1016:0321/153333:1037625:VERBOSE1:setup_main.cpp(109)] Command Line: "C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exe" --install-archive="C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\MAILMASTER.PACKED.7Z" --verbose-logging --mini_installer="C:\Users\admin\AppData\Local\Temp\mail.exe"
setup.exe
[1624:1016:0321/153333:1037625:VERBOSE1:install_util.cpp(169)] Windows NT 6.1 SP1
setup.exe
[1588:888:0321/153334:1038671:VERBOSE1:setup_main.cpp(109)] Command Line: "C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\setup.exe" --install-archive="C:\Users\admin\AppData\Local\Temp\CR_0DD30.tmp\MAILMASTER.PACKED.7Z" --verbose-logging --mini_installer="C:\Users\admin\AppData\Local\Temp\mail.exe" --run-as-admin --system-level
setup.exe
[1588:888:0321/153334:1038671:VERBOSE1:install_util.cpp(169)] Windows NT 6.1 SP1
setup.exe
[1588:888:0321/153334:1038671:INFO:install_service.cpp(163)] Checking Install path: C:\Program Files\Neteasewith install type: 1(1.new 2.down 3.eq 4.up)
setup.exe
[1588:888:0321/153334:1038687:INFO:disk_util.cpp(33)] current path is match free space requirementC:\Program Files\Netease
setup.exe
[1588:888:0321/153334:1038687:INFO:install_service.cpp(168)] Disk space is enough to install: C:\Program Files\Netease
setup.exe
[1588:888:0321/153420:1084593:INFO:setup_window.cpp(219)] checking install path: C:\Program Files\Netease
setup.exe
[1588:2844:0321/153420:1084593:VERBOSE1:setup.cpp(662)] multi install is 0
setup.exe
[1588:2844:0321/153420:1084593:VERBOSE1:setup.cpp(665)] system install is 1