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File name:

Firefox Installer.de.exe

Full analysis: https://app.any.run/tasks/99b3fcfa-956e-4239-a5b5-b01fe9eea22a
Verdict: Malicious activity
Analysis date: February 10, 2019, 14:12:09
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, UPX compressed
MD5:

BBDEF37D2B1E8ACBC106084850E7499E

SHA1:

0E81CAF6B53E719908D48B62CCD468D7E855705D

SHA256:

71B6B29E3EDBA20AB333BA77F2846890674C7A1B1705C3384A2936FBE6CCE8CC

SSDEEP:

6144:4mvr9RLcN0BvxoLjGRU4UUU3UUUD9rOAe1i/M1v/oyE6hl+S9/Re56RKVKdV17wl:4mr9RUsJGjqU4UUU3UUUZa7IMdTJ/Rcb

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-stub.exe (PID: 3784)
      • setup-stub.exe (PID: 3904)
      • setup.exe (PID: 3224)
      • maintenanceservice_installer.exe (PID: 3040)
      • maintenanceservice.exe (PID: 2120)
      • nsF5A3.tmp (PID: 2332)
      • firefox.exe (PID: 2300)
      • firefox.exe (PID: 2324)
      • firefox.exe (PID: 3280)
      • firefox.exe (PID: 1420)
      • firefox.exe (PID: 2408)
      • firefox.exe (PID: 3512)
      • firefox.exe (PID: 2992)
      • firefox.exe (PID: 3436)

    • Loads dropped or rewritten executable

      • setup-stub.exe (PID: 3784)
      • setup-stub.exe (PID: 3904)
      • setup.exe (PID: 3224)
      • maintenanceservice_installer.exe (PID: 3040)
      • csrss.exe (PID: 400)
      • firefox.exe (PID: 2324)
      • firefox.exe (PID: 2300)
      • firefox.exe (PID: 3280)
      • firefox.exe (PID: 2408)
      • firefox.exe (PID: 1420)
      • firefox.exe (PID: 3512)
      • firefox.exe (PID: 3436)
      • firefox.exe (PID: 2992)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • Firefox Installer.de.exe (PID: 2940)
      • setup-stub.exe (PID: 3904)
      • setup-stub.exe (PID: 3784)
      • download.exe (PID: 3352)
      • setup.exe (PID: 3224)
      • maintenanceservice_installer.exe (PID: 3040)

    • Application launched itself

      • setup-stub.exe (PID: 3904)
      • firefox.exe (PID: 2324)
      • firefox.exe (PID: 2300)

    • Creates COM task schedule object

      • setup.exe (PID: 3224)

    • Creates files in the program directory

      • setup-stub.exe (PID: 3784)
      • maintenanceservice_installer.exe (PID: 3040)
      • maintenanceservice.exe (PID: 2120)
      • setup.exe (PID: 3224)
      • firefox.exe (PID: 2300)

    • Starts application with an unusual extension

      • setup.exe (PID: 3224)

    • Modifies the open verb of a shell class

      • setup.exe (PID: 3224)

    • Creates a software uninstall entry

      • setup.exe (PID: 3224)
      • maintenanceservice_installer.exe (PID: 3040)

    • Creates files in the user directory

      • setup.exe (PID: 3224)
      • firefox.exe (PID: 2300)

    • Reads CPU info

      • firefox.exe (PID: 2300)

  • 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 | UPX compressed Win32 Executable (64.2)
.dll | Win32 Dynamic Link Library (generic) (15.6)
.exe | Win32 Executable (generic) (10.6)
.exe | Generic Win/DOS Executable (4.7)
.exe | DOS Executable Generic (4.7)

EXIF

EXE

ProductVersion: 18.05
ProductName: Firefox
OriginalFileName: 7zS.sfx.exe
LegalCopyright: Mozilla
InternalName: 7zS.sfx
FileVersion: 18.05
FileDescription: Firefox
CompanyName: Mozilla
CharacterSet: Unicode
LanguageCode: English (U.S.)
FileSubtype: -
ObjectFileType: Executable application
FileOS: Windows NT 32-bit
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 18.5.0.0
FileVersionNumber: 18.5.0.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x34310
UninitializedDataSize: 147456
InitializedDataSize: 65536
CodeSize: 65536
LinkerVersion: 6
PEType: PE32
TimeStamp: 2018:08:31 00:18:33+02:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 30-Aug-2018 22:18:33
Detected languages:
  • English - United States
CompanyName: Mozilla
FileDescription: Firefox
FileVersion: 18.05
InternalName: 7zS.sfx
LegalCopyright: Mozilla
OriginalFilename: 7zS.sfx.exe
ProductName: Firefox
ProductVersion: 18.05

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: 0x000000F0

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 3
Time date stamp: 30-Aug-2018 22:18:33
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
UPX0
0x00001000
0x00024000
0x00000000
IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
UPX1
0x00025000
0x00010000
0x0000F600
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
7.89699
.rsrc
0x00035000
0x00010000
0x0000F200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
7.39743

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.38843
1365
UNKNOWN
UNKNOWN
RT_MANIFEST
2
5.28933
5160
UNKNOWN
English - United States
RT_ICON
3
5.05971
11560
UNKNOWN
English - United States
RT_ICON
4
7.98148
40620
UNKNOWN
English - United States
RT_ICON
5
6.59467
136
UNKNOWN
English - United States
RT_STRING
97
6.89291
184
UNKNOWN
English - United States
RT_DIALOG
188
6.06482
84
UNKNOWN
English - United States
RT_STRING
207
5.46967
52
UNKNOWN
English - United States
RT_STRING

Imports

KERNEL32.DLL
MSVCRT.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
51
Monitored processes
17
Malicious processes
13
Suspicious processes
3

Behavior graph

Click at the process to see the details
drop and start start drop and start drop and start drop and start firefox installer.de.exe setup-stub.exe setup-stub.exe download.exe setup.exe nsf5a3.tmp no specs maintenanceservice_installer.exe maintenanceservice.exe no specs csrss.exe no specs firefox.exe no specs firefox.exe firefox.exe no specs firefox.exe firefox.exe firefox.exe firefox.exe firefox.exe

Process information

PID
CMD
Path
Indicators
Parent process
2940"C:\Users\admin\AppData\Local\Temp\Firefox Installer.de.exe" C:\Users\admin\AppData\Local\Temp\Firefox Installer.de.exe
explorer.exe
User:
admin
Company:
Mozilla
Integrity Level:
MEDIUM
Description:
Firefox
Exit code:
0
Version:
18.05
3904.\setup-stub.exeC:\Users\admin\AppData\Local\Temp\7zSC7BF5EB9\setup-stub.exe
Firefox Installer.de.exe
User:
admin
Company:
mozilla.org
Integrity Level:
MEDIUM
Description:
Firefox Nightly Installer
Exit code:
0
Version:
67.0a1
3784"C:\Users\admin\AppData\Local\Temp\7zSC7BF5EB9\setup-stub.exe" /UAC:5010E /NCRCC:\Users\admin\AppData\Local\Temp\7zSC7BF5EB9\setup-stub.exe
setup-stub.exe
User:
admin
Company:
mozilla.org
Integrity Level:
HIGH
Description:
Firefox Nightly Installer
Exit code:
0
Version:
67.0a1
3352"C:\Users\admin\AppData\Local\Temp\nsb9988.tmp\download.exe" /LaunchedFromStub /INI=C:\Users\admin\AppData\Local\Temp\nsb9988.tmp\config.iniC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\download.exe
setup-stub.exe
User:
admin
Company:
Mozilla
Integrity Level:
HIGH
Description:
Firefox
Exit code:
0
Version:
18.05
3224.\setup.exe /LaunchedFromStub /INI=C:\Users\admin\AppData\Local\Temp\nsb9988.tmp\config.iniC:\Users\admin\AppData\Local\Temp\7zS81D83AE9\setup.exe
download.exe
User:
admin
Company:
mozilla.org
Integrity Level:
HIGH
Description:
Firefox Nightly Installer
Exit code:
0
Version:
67.0a1
2332"C:\Users\admin\AppData\Local\Temp\nsiEBED.tmp\nsF5A3.tmp" "C:\Program Files\Firefox Nightly\maintenanceservice_installer.exe"C:\Users\admin\AppData\Local\Temp\nsiEBED.tmp\nsF5A3.tmp—setup.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
3040"C:\Program Files\Firefox Nightly\maintenanceservice_installer.exe"C:\Program Files\Firefox Nightly\maintenanceservice_installer.exe
nsF5A3.tmp
User:
admin
Company:
Mozilla Corporation
Integrity Level:
HIGH
Description:
Mozilla Maintenance Service Installer
Exit code:
0
Version:
67.0a1
2120"C:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe" installC:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe—maintenanceservice_installer.exe
User:
admin
Company:
Mozilla Foundation
Integrity Level:
HIGH
Exit code:
0
Version:
67.0a1
400%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,12288,512 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16C:\Windows\System32\csrss.exe——
User:
SYSTEM
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Client Server Runtime Process
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2324"C:\Program Files\Firefox Nightly\firefox.exe"C:\Program Files\Firefox Nightly\firefox.exe—setup-stub.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
MEDIUM
Description:
Firefox Nightly
Exit code:
0
Version:
67.0a1
Total events
1 510
Read events
1 346
Write events
0
Delete events
0

Modification events

No data
Executable files
166
Suspicious files
64
Text files
172
Unknown types
130

Dropped files

PID
Process
Filename
Type
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\download.exe —
MD5:—
SHA256:—
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\bgstub_2x.jpgimage
MD5:E6B3252C0722A72DC6EC9DBD8E50E6FA
SHA256:4736734F8D6C0671B22FF75706D639ABB3B9DE2B111CF3843C91983F6C19AF79
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\InetBgDL.dllexecutable
MD5:73A0BEC837004BC5AE5CD0A5B0D3BCF8
SHA256:0DD38281A824298100B2BC89EE5B8A5C9CD9EC7A3B051DFF42037A891FA7C534
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\bgstub.jpgimage
MD5:B5C054D2CEB21424777CF0A5A665DBC5
SHA256:D756B51AE5EB99CDDAEE671A202F73C7F56CEB43C936B1856BD434E90B207EA7
2940Firefox Installer.de.exeC:\Users\admin\AppData\Local\Temp\7zSC7BF5EB9\setup-stub.exeexecutable
MD5:23827AE7E1FECACAE78362396ED556C8
SHA256:6D95A9593BC4726556535C177C8E7F9BE120BF6A195D4CDFC15FB49C29E718C0
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\config.initext
MD5:63A63D35CF97699B161B8E1E20916731
SHA256:CF54A33781B1E2E6CAAE72E3F63297BC9172279BB5F991A16AC0919A87C90A4D
3352download.exeC:\Users\admin\AppData\Local\Temp\7zS81D83AE9\core\AccessibleHandler.dllexecutable
MD5:8EDBAF9B320D6812C7385B18B08565A0
SHA256:5D0CEFA4CF46CA22443BAD43F877943939DBEBA8A3F77F6BE5C3CB624E2089E0
3352download.exeC:\Users\admin\AppData\Local\Temp\7zS81D83AE9\core\AccessibleMarshal.dllexecutable
MD5:15634E1732860958E6F331011D504A84
SHA256:11D6729A2AE74E7A4EFE0DFBE466B555B3FEE0B999A685023F5C4DF16ADC969A
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\System.dllexecutable
MD5:17ED1C86BD67E78ADE4712BE48A7D2BD
SHA256:BD046E6497B304E4EA4AB102CAB2B1F94CE09BDE0EEBBA4C59942A732679E4EB
3784setup-stub.exeC:\Users\admin\AppData\Local\Temp\nsb9988.tmp\nsDialogs.dllexecutable
MD5:42B064366F780C1F298FA3CB3AEAE260
SHA256:C13104552B8B553159F50F6E2CA45114493397A6FA4BF2CBB960C4A2BBD349AB
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
14
TCP/UDP connections
33
DNS requests
83
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3784
setup-stub.exe
GET
200
52.42.67.12:80
http://download-stats.mozilla.org/stub/v8/nightly/nightly/de/0/0/6/1/7601/1/0/0/2/0/45173704/45173704/0/0/13/13/0/0/22/2/0/0/1/0/0/67.0a1/20190210094433/1/1/0/3/13.32.221.111/campaign%3D%2528not%2Bset%2529%26content%3D%2528not%2Bset%2529%26medium%3D%2528none%2529%26source%3Dwww.mozilla.org/0/0
US
—
—
whitelisted
2300
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2300
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2300
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2300
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2300
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2300
firefox.exe
POST
200
172.217.16.131:80
http://ocsp.pki.goog/GTSGIAG3
US
der
463 b
whitelisted
2300
firefox.exe
POST
200
172.217.16.131:80
http://ocsp.pki.goog/GTSGIAG3
US
der
463 b
whitelisted
2300
firefox.exe
POST
200
172.217.16.131:80
http://ocsp.pki.goog/GTSGIAG3
US
der
463 b
whitelisted
2300
firefox.exe
POST
200
172.217.16.131:80
http://ocsp.pki.goog/GTSGIAG3
US
der
463 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
3784
setup-stub.exe
52.5.199.146:443
download.mozilla.org
Amazon.com, Inc.
US
unknown
3784
setup-stub.exe
52.42.67.12:80
download-stats.mozilla.org
Amazon.com, Inc.
US
unknown
3784
setup-stub.exe
13.32.221.111:443
download-installer.cdn.mozilla.net
Amazon.com, Inc.
US
unknown
2300
firefox.exe
93.184.220.29:80
ocsp.digicert.com
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted
2300
firefox.exe
2.16.186.112:80
detectportal.firefox.com
Akamai International B.V.
—
whitelisted
2300
firefox.exe
34.215.11.207:443
accounts.firefox.com
Amazon.com, Inc.
US
unknown
2300
firefox.exe
52.18.148.152:443
location.services.mozilla.com
Amazon.com, Inc.
IE
unknown
2300
firefox.exe
52.89.32.107:443
search.services.mozilla.com
Amazon.com, Inc.
US
unknown
2300
firefox.exe
104.16.40.2:443
www.mozilla.org
Cloudflare Inc
US
shared
2300
firefox.exe
13.32.159.252:443
snippets.cdn.mozilla.net
Amazon.com, Inc.
US
unknown

DNS requests

Domain
IP
Reputation
download.mozilla.org
  • 52.5.199.146
  • 34.237.104.187
  • 34.193.234.146
  • 107.23.232.109
  • 3.208.35.0
  • 54.165.154.57
whitelisted
download-installer.cdn.mozilla.net
  • 13.32.221.111
whitelisted
download-stats.mozilla.org
  • 52.42.67.12
  • 52.10.26.75
whitelisted
location.services.mozilla.com
  • 52.18.148.152
  • 34.252.164.43
  • 34.251.59.153
whitelisted
detectportal.firefox.com
  • 2.16.186.112
  • 2.16.186.50
whitelisted
locprod1-elb-eu-west-1.prod.mozaws.net
  • 34.251.59.153
  • 34.252.164.43
  • 52.18.148.152
whitelisted
a1089.dscd.akamai.net
  • 2.16.186.50
  • 2.16.186.112
whitelisted
www.mozilla.org
  • 104.16.40.2
  • 104.16.41.2
whitelisted
www.mozilla.org.cdn.cloudflare.net
  • 104.16.41.2
  • 104.16.40.2
whitelisted
ocsp.digicert.com
  • 93.184.220.29
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
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Reports
Firefox Installer.de.exe