URL:

https://github.com/MalwareStudio/Mbr-Builder

Full analysis: https://app.any.run/tasks/ffcef385-6a9d-42d3-99d1-d4ee62a86a73
Verdict: Malicious activity
Threats:

Trojans are a group of malicious programs distinguished by their ability to masquerade as benign software. Depending on their type, trojans possess a variety of capabilities, ranging from maintaining full remote control over the victim’s machine to stealing data and files, as well as dropping other malware. At the same time, the main functionality of each trojan family can differ significantly depending on its type. The most common trojan infection chain starts with a phishing email.

Analysis date: June 26, 2021, 18:42:22
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
Indicators:
MD5:

CDBC72F426CEFF72C21AB2566B1D1902

SHA1:

88F4F27E8D0259B91837AA55A8205365DDAD9C38

SHA256:

EA1C346150B9B715D48F8EB31C84A722269C00A941737B5A7044B3BB1EAD30A9

SSDEEP:

3:N8tEdn3iwGX:2udSv

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

      • MBR_BUILDER.exe (PID: 3304)
      • ._cache_MBR_BUILDER.exe (PID: 3068)
      • Synaptics.exe (PID: 3432)
    • Drops executable file immediately after starts

      • MBR_BUILDER.exe (PID: 3304)
    • Changes the autorun value in the registry

      • MBR_BUILDER.exe (PID: 3304)
    • Connects to CnC server

      • Synaptics.exe (PID: 3432)
  • SUSPICIOUS

    • Checks supported languages

      • WinRAR.exe (PID: 1280)
      • WinRAR.exe (PID: 3064)
      • MBR_BUILDER.exe (PID: 3304)
      • ._cache_MBR_BUILDER.exe (PID: 3068)
      • Synaptics.exe (PID: 3432)
    • Executable content was dropped or overwritten

      • WinRAR.exe (PID: 1280)
      • MBR_BUILDER.exe (PID: 3304)
    • Drops a file with too old compile date

      • WinRAR.exe (PID: 1280)
      • MBR_BUILDER.exe (PID: 3304)
    • Reads the computer name

      • WinRAR.exe (PID: 3064)
      • WinRAR.exe (PID: 1280)
      • MBR_BUILDER.exe (PID: 3304)
      • Synaptics.exe (PID: 3432)
      • ._cache_MBR_BUILDER.exe (PID: 3068)
    • Creates files in the program directory

      • MBR_BUILDER.exe (PID: 3304)
    • Reads the date of Windows installation

      • MBR_BUILDER.exe (PID: 3304)
  • INFO

    • Application launched itself

      • firefox.exe (PID: 2496)
      • firefox.exe (PID: 2812)
    • Reads the computer name

      • firefox.exe (PID: 2812)
      • firefox.exe (PID: 2960)
      • firefox.exe (PID: 3056)
      • firefox.exe (PID: 4024)
      • firefox.exe (PID: 1268)
      • firefox.exe (PID: 2328)
      • firefox.exe (PID: 1592)
      • firefox.exe (PID: 3336)
      • firefox.exe (PID: 2988)
    • Checks supported languages

      • firefox.exe (PID: 2496)
      • firefox.exe (PID: 2812)
      • firefox.exe (PID: 1268)
      • firefox.exe (PID: 2960)
      • firefox.exe (PID: 1592)
      • firefox.exe (PID: 3056)
      • firefox.exe (PID: 2328)
      • firefox.exe (PID: 4024)
      • firefox.exe (PID: 3336)
      • firefox.exe (PID: 2988)
    • Reads CPU info

      • firefox.exe (PID: 2812)
    • Creates files in the user directory

      • firefox.exe (PID: 2812)
    • Creates files in the program directory

      • firefox.exe (PID: 2812)
    • Dropped object may contain Bitcoin addresses

      • firefox.exe (PID: 2812)
    • Manual execution by user

      • WinRAR.exe (PID: 3064)
      • WinRAR.exe (PID: 1280)
      • MBR_BUILDER.exe (PID: 3304)
    • Checks Windows Trust Settings

      • firefox.exe (PID: 2812)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
55
Monitored processes
15
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start drop and start drop and start firefox.exe no specs firefox.exe firefox.exe no specs firefox.exe no specs firefox.exe no specs firefox.exe no specs firefox.exe no specs firefox.exe no specs firefox.exe no specs firefox.exe no specs winrar.exe no specs winrar.exe mbr_builder.exe ._cache_mbr_builder.exe no specs synaptics.exe

Process information

PID
CMD
Path
Indicators
Parent process
1268"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2812.6.1748906655\2099291398" -childID 1 -isForBrowser -prefsHandle 2232 -prefMapHandle 2228 -prefsLen 245 -prefMapSize 238726 -parentBuildID 20201112153044 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2812 "\\.\pipe\gecko-crash-server-pipe.2812" 2244 tabC:\Program Files\Mozilla Firefox\firefox.exefirefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
LOW
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\crypt32.dll
1280"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\MBR_BUILDER.zip"C:\Program Files\WinRAR\WinRAR.exe
Explorer.EXE
User:
admin
Company:
Alexander Roshal
Integrity Level:
MEDIUM
Description:
WinRAR archiver
Exit code:
0
Version:
5.91.0
Modules
Images
c:\program files\winrar\winrar.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\comdlg32.dll
1592"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2812.27.1669242560\1963812600" -childID 4 -isForBrowser -prefsHandle 3892 -prefMapHandle 1716 -prefsLen 7700 -prefMapSize 238726 -parentBuildID 20201112153044 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2812 "\\.\pipe\gecko-crash-server-pipe.2812" 3960 tabC:\Program Files\Mozilla Firefox\firefox.exefirefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
LOW
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\crypt32.dll
2328"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2812.28.757273383\1525889019" -childID 5 -isForBrowser -prefsHandle 3984 -prefMapHandle 3976 -prefsLen 7700 -prefMapSize 238726 -parentBuildID 20201112153044 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2812 "\\.\pipe\gecko-crash-server-pipe.2812" 4080 tabC:\Program Files\Mozilla Firefox\firefox.exefirefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
LOW
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\msasn1.dll
2496"C:\Program Files\Mozilla Firefox\firefox.exe" "https://github.com/MalwareStudio/Mbr-Builder"C:\Program Files\Mozilla Firefox\firefox.exeExplorer.EXE
User:
admin
Company:
Mozilla Corporation
Integrity Level:
MEDIUM
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\windows\system32\ntdll.dll
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msasn1.dll
2812"C:\Program Files\Mozilla Firefox\firefox.exe" https://github.com/MalwareStudio/Mbr-BuilderC:\Program Files\Mozilla Firefox\firefox.exe
firefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
MEDIUM
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\crypt32.dll
2960"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2812.0.111680794\216099226" -parentBuildID 20201112153044 -prefsHandle 1116 -prefMapHandle 1108 -prefsLen 1 -prefMapSize 238726 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2812 "\\.\pipe\gecko-crash-server-pipe.2812" 1172 gpuC:\Program Files\Mozilla Firefox\firefox.exefirefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
MEDIUM
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\sechost.dll
c:\windows\system32\crypt32.dll
2988"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2812.48.408039658\1906299030" -childID 7 -isForBrowser -prefsHandle 4556 -prefMapHandle 4560 -prefsLen 9742 -prefMapSize 238726 -parentBuildID 20201112153044 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2812 "\\.\pipe\gecko-crash-server-pipe.2812" 4572 tabC:\Program Files\Mozilla Firefox\firefox.exefirefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
LOW
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\crypt32.dll
3056"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2812.13.651355872\870054419" -childID 2 -isForBrowser -prefsHandle 3080 -prefMapHandle 3076 -prefsLen 6644 -prefMapSize 238726 -parentBuildID 20201112153044 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2812 "\\.\pipe\gecko-crash-server-pipe.2812" 3096 tabC:\Program Files\Mozilla Firefox\firefox.exefirefox.exe
User:
admin
Company:
Mozilla Corporation
Integrity Level:
LOW
Description:
Firefox
Exit code:
0
Version:
83.0
Modules
Images
c:\windows\system32\ntdll.dll
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\msasn1.dll
3064"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\MBR_BUILDER.zip"C:\Program Files\WinRAR\WinRAR.exeExplorer.EXE
User:
admin
Company:
Alexander Roshal
Integrity Level:
MEDIUM
Description:
WinRAR archiver
Exit code:
0
Version:
5.91.0
Modules
Images
c:\program files\winrar\winrar.exe
c:\windows\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\comdlg32.dll
Total events
15 939
Read events
15 788
Write events
150
Delete events
1

Modification events

(PID) Process:(2496) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Launcher
Operation:writeName:C:\Program Files\Mozilla Firefox\firefox.exe|Launcher
Value:
A659907408000000
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Launcher
Operation:writeName:C:\Program Files\Mozilla Firefox\firefox.exe|Browser
Value:
DB61907408000000
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Launcher
Operation:writeName:C:\Program Files\Mozilla Firefox\firefox.exe|Telemetry
Value:
0
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\DllPrefetchExperiment
Operation:writeName:C:\Program Files\Mozilla Firefox\firefox.exe
Value:
0
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Default Browser Agent
Operation:writeName:C:\Program Files\Mozilla Firefox|DisableTelemetry
Value:
1
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Default Browser Agent
Operation:writeName:C:\Program Files\Mozilla Firefox|DisableDefaultBrowserAgent
Value:
0
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Default Browser Agent
Operation:writeName:C:\Program Files\Mozilla Firefox|ServicesSettingsServer
Value:
https://firefox.settings.services.mozilla.com/v1
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Mozilla\Firefox\Default Browser Agent
Operation:writeName:C:\Program Files\Mozilla Firefox|SecurityContentSignatureRootHash
Value:
97:E8:BA:9C:F1:2F:B3:DE:53:CC:42:A4:E6:57:7E:D6:4D:F4:93:C2:47:B4:14:FE:A0:36:81:8D:38:23:56:0E
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
(PID) Process:(2812) firefox.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
Operation:writeName:SavedLegacySettings
Value:
460000003B010000090000000000000000000000000000000400000000000000C0E333BBEAB1D3010000000000000000000000000100000002000000C0A80164000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Executable files
5
Suspicious files
93
Text files
40
Unknown types
27

Dropped files

PID
Process
Filename
Type
2812firefox.exeC:\Users\admin\AppData\Local\Mozilla\Firefox\Profiles\qldyz51w.default\startupCache\scriptCache-current.bin
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\prefs.jstext
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\prefs-1.jstext
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\places.sqlite-walsqlite-wal
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\cookies.sqlite-shmbinary
MD5:B7C14EC6110FA820CA6B65F5AEC85911
SHA256:FD4C9FDA9CD3F9AE7C962B0DDF37232294D55580E1AA165AA06129B8549389EB
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\protections.sqlite-journalbinary
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Roaming\Mozilla\Firefox\Profiles\qldyz51w.default\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite-walbinary
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Local\Mozilla\Firefox\Profiles\qldyz51w.default\settings\main\ms-language-packs\asrouter.ftl.tmptext
MD5:
SHA256:
2812firefox.exeC:\Users\admin\AppData\Local\Mozilla\Firefox\Profiles\qldyz51w.default\settings\main\ms-language-packs\asrouter.ftltext
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
14
TCP/UDP connections
44
DNS requests
93
Threats
4

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2812
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
278 b
whitelisted
2812
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
279 b
whitelisted
2812
firefox.exe
POST
200
142.250.186.67:80
http://ocsp.pki.goog/gts1o1core
US
der
472 b
whitelisted
2812
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2812
firefox.exe
POST
200
142.250.186.67:80
http://ocsp.pki.goog/gts1c3
US
der
472 b
whitelisted
2812
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2812
firefox.exe
POST
200
142.250.186.67:80
http://ocsp.pki.goog/gts1c3
US
der
472 b
whitelisted
2812
firefox.exe
POST
200
142.250.186.67:80
http://ocsp.pki.goog/gts1c3
US
der
472 b
whitelisted
2812
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
US
der
471 b
whitelisted
2812
firefox.exe
POST
200
93.184.220.29:80
http://ocsp.digicert.com/
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
2812
firefox.exe
13.224.193.19:443
tracking-protection.cdn.mozilla.net
US
suspicious
2812
firefox.exe
142.250.185.68:443
www.google.com
Google Inc.
US
whitelisted
2812
firefox.exe
34.107.221.82:80
detectportal.firefox.com
US
whitelisted
2812
firefox.exe
13.224.193.70:443
firefox.settings.services.mozilla.com
US
malicious
2812
firefox.exe
35.83.75.254:443
location.services.mozilla.com
Merit Network Inc.
US
unknown
2812
firefox.exe
93.184.220.29:80
ocsp.digicert.com
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted
2812
firefox.exe
142.250.186.42:443
safebrowsing.googleapis.com
Google Inc.
US
whitelisted
2812
firefox.exe
142.250.186.67:80
ocsp.pki.goog
Google Inc.
US
whitelisted
2812
firefox.exe
13.225.87.40:443
content-signature-2.cdn.mozilla.net
US
suspicious
2812
firefox.exe
54.213.218.169:443
push.services.mozilla.com
Amazon.com, Inc.
US
unknown

DNS requests

Domain
IP
Reputation
detectportal.firefox.com
  • 34.107.221.82
whitelisted
prod.detectportal.prod.cloudops.mozgcp.net
  • 34.107.221.82
whitelisted
github.com
  • 140.82.121.3
malicious
firefox.settings.services.mozilla.com
  • 13.224.193.70
  • 13.224.193.99
  • 13.224.193.78
  • 13.224.193.14
whitelisted
location.services.mozilla.com
  • 35.83.75.254
  • 44.236.127.247
  • 54.149.13.197
  • 34.215.35.6
  • 54.186.138.163
  • 54.186.181.218
whitelisted
locprod2-elb-us-west-2.prod.mozaws.net
  • 54.186.181.218
  • 54.186.138.163
  • 34.215.35.6
  • 54.149.13.197
  • 44.236.127.247
  • 35.83.75.254
whitelisted
example.org
  • 93.184.216.34
whitelisted
ipv4only.arpa
  • 192.0.0.170
  • 192.0.0.171
whitelisted
ocsp.digicert.com
  • 93.184.220.29
whitelisted
cs9.wac.phicdn.net
  • 93.184.220.29
whitelisted

Threats

PID
Process
Class
Message
Misc activity
ET INFO DYNAMIC_DNS Query to Abused Domain *.mooo.com
3 ETPRO signatures available at the full report
No debug info