File name:

Server.exe

Full analysis: https://app.any.run/tasks/62712506-8d4c-498f-95b4-f2ba68fc2d70
Verdict: Malicious activity
Threats:

njRAT is a remote access trojan. It is one of the most widely accessible RATs on the market that features an abundance of educational information. Interested attackers can even find tutorials on YouTube. This allows it to become one of the most popular RATs in the world.

Malware Trends Tracker     >>>
Analysis date: October 19, 2020, 22:39:38
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
rat
njrat
bladabindi
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

89EF2BA3CCB877C27CEF71C5B63A502C

SHA1:

A31C67D3878F701418402464718621C4F71202EE

SHA256:

ED46DA701A377F5018F805CEB85AA31E72D3D50EA0ACBF84077C02C9861A2D69

SSDEEP:

384:CZyEqFgpWoy7krZtEVOsMBIHAkHC9D9O5UE5QzwBlpJNakkjh/TzF7pWn4PgreTr:w2Wol70ZtGOKgcvQO+11+L

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

    • Writes to a start menu file

      • system32t.exe (PID: 1832)

    • NJRAT was detected

      • system32t.exe (PID: 1832)

    • Connects to CnC server

      • system32t.exe (PID: 1832)

    • Changes the autorun value in the registry

      • system32t.exe (PID: 1832)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • Server.exe (PID: 2592)
      • system32t.exe (PID: 1832)

    • Starts itself from another location

      • Server.exe (PID: 2592)

    • Creates files in the user directory

      • system32t.exe (PID: 1832)

    • Starts Internet Explorer

      • system32t.exe (PID: 1832)

    • Executed via COM

      • FlashUtil32_26_0_0_131_ActiveX.exe (PID: 3448)

  • INFO

    • Adds / modifies Windows certificates

      • iexplore.exe (PID: 948)

    • Reads Internet Cache Settings

      • iexplore.exe (PID: 948)
      • iexplore.exe (PID: 2544)
      • iexplore.exe (PID: 2404)

    • Changes internet zones settings

      • iexplore.exe (PID: 948)

    • Application launched itself

      • iexplore.exe (PID: 948)

    • Creates files in the user directory

      • FlashUtil32_26_0_0_131_ActiveX.exe (PID: 3448)

    • Reads internet explorer settings

      • iexplore.exe (PID: 2544)

    • Reads settings of System Certificates

      • iexplore.exe (PID: 948)

    • Changes settings of System certificates

      • iexplore.exe (PID: 948)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2020:10:19 23:52:35+02:00
PEType: PE32
LinkerVersion: 8
CodeSize: 41984
InitializedDataSize: 1536
UninitializedDataSize: -
EntryPoint: 0xc2be
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 19-Oct-2020 21:52:35

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: 0x00000080

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 3
Time date stamp: 19-Oct-2020 21:52:35
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
0x00002000
0x0000A2C4
0x0000A400
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.67533
.rsrc
0x0000E000
0x00000400
0x00000400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
3.51607
.reloc
0x00010000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.0776332

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.00112
490
UNKNOWN
UNKNOWN
RT_MANIFEST

Imports

mscoree.dll
No data.
screenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
44
Monitored processes
6
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start server.exe #NJRAT system32t.exe iexplore.exe iexplore.exe flashutil32_26_0_0_131_activex.exe no specs iexplore.exe

Process information

PID
CMD
Path
Indicators
Parent process
948"C:\Program Files\Internet Explorer\iexplore.exe" http://www.upload.ee/image/2971847/scare4.swfC:\Program Files\Internet Explorer\iexplore.exe
system32t.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Internet Explorer
Exit code:
0
Version:
11.00.9600.16428 (winblue_gdr.131013-1700)
Modules
Images
c:\program files\internet explorer\iexplore.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-advapi32-l1-1-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\iertutil.dll
1832"C:\Users\admin\AppData\Local\Temp\system32t.exe" C:\Users\admin\AppData\Local\Temp\system32t.exe
Server.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\system32t.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\mscoree.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\microsoft.net\framework\v4.0.30319\mscoreei.dll
2404"C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:948 CREDAT:4134155 /prefetch:2C:\Program Files\Internet Explorer\iexplore.exe
iexplore.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Internet Explorer
Exit code:
0
Version:
11.00.9600.16428 (winblue_gdr.131013-1700)
Modules
Images
c:\program files\internet explorer\iexplore.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-advapi32-l1-1-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\iertutil.dll
2544"C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:948 CREDAT:267521 /prefetch:2C:\Program Files\Internet Explorer\iexplore.exe
iexplore.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Internet Explorer
Exit code:
0
Version:
11.00.9600.16428 (winblue_gdr.131013-1700)
Modules
Images
c:\program files\internet explorer\iexplore.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-advapi32-l1-1-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\iertutil.dll
2592"C:\Users\admin\AppData\Local\Temp\Server.exe" C:\Users\admin\AppData\Local\Temp\Server.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\server.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\mscoree.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\microsoft.net\framework\v4.0.30319\mscoreei.dll
3448C:\Windows\system32\Macromed\Flash\FlashUtil32_26_0_0_131_ActiveX.exe -EmbeddingC:\Windows\system32\Macromed\Flash\FlashUtil32_26_0_0_131_ActiveX.exe—svchost.exe
User:
admin
Company:
Adobe Systems Incorporated
Integrity Level:
MEDIUM
Description:
Adobe® Flash® Player Installer/Uninstaller 26.0 r0
Exit code:
0
Version:
26,0,0,131
Modules
Images
c:\windows\system32\macromed\flash\flashutil32_26_0_0_131_activex.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\msvcrt.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\advapi32.dll
Total events
1 217
Read events
1 091
Write events
125
Delete events
1

Modification events

(PID) Process:(2592) Server.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(1832) system32t.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(2592) Server.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(2592) Server.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(1832) system32t.exeKey:HKEY_CURRENT_USER\Environment
Operation:writeName:SEE_MASK_NOZONECHECKS
Value:
1
(PID) Process:(1832) system32t.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Windows Update
Value:
"C:\Users\admin\AppData\Local\Temp\system32t.exe" ..
(PID) Process:(948) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\UrlBlockManager
Operation:writeName:NextCheckForUpdateLowDateTime
Value:
4040358330
(PID) Process:(948) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\UrlBlockManager
Operation:writeName:NextCheckForUpdateHighDateTime
Value:
30844520
(PID) Process:(1832) system32t.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached
Operation:writeName:{17FE9752-0B5A-4665-84CD-569794602F5C} {7F9185B0-CB92-43C5-80A9-92277A4F7B54} 0xFFFF
Value:
0100000000000000367FD9DE68A6D601
(PID) Process:(948) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
Executable files
2
Suspicious files
5
Text files
3
Unknown types
23

Dropped files

PID
Process
Filename
Type
2544iexplore.exeC:\Users\admin\AppData\Local\Temp\Low\CabFB1E.tmp —
MD5:—
SHA256:—
2544iexplore.exeC:\Users\admin\AppData\Local\Temp\Low\TarFB1F.tmp —
MD5:—
SHA256:—
3448FlashUtil32_26_0_0_131_ActiveX.exeC:\Users\admin\AppData\Roaming\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sxx:Zone.Identifier —
MD5:—
SHA256:—
3448FlashUtil32_26_0_0_131_ActiveX.exeC:\Users\admin\AppData\Roaming\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sxx —
MD5:—
SHA256:—
948iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico —
MD5:—
SHA256:—
948iexplore.exeC:\Users\admin\AppData\Local\Temp\Cab12CC.tmp —
MD5:—
SHA256:—
948iexplore.exeC:\Users\admin\AppData\Local\Temp\Cab12CD.tmp —
MD5:—
SHA256:—
948iexplore.exeC:\Users\admin\AppData\Local\Temp\Tar12CE.tmp —
MD5:—
SHA256:—
948iexplore.exeC:\Users\admin\AppData\Local\Temp\Tar12CF.tmp —
MD5:—
SHA256:—
2544iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B398B80134F72209547439DB21AB308D_CCF564BE5A3C924B17DDEBDEB5236E12binary
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
13
DNS requests
7
Threats
16

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2544
iexplore.exe
GET
302
37.187.167.53:80
http://www.upload.ee/image/2971847/scare4.swf
FR
—
—
whitelisted
2404
iexplore.exe
GET
302
37.187.167.53:80
http://www.upload.ee/image/2298158/koli.swf
FR
—
—
whitelisted
2544
iexplore.exe
GET
200
93.184.220.29:80
http://status.rapidssl.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRhhZrQET0hvbSHUJmNfBKqR%2FiT7wQUU8oXWfxrwAMhLxqu5KqoHIJW2nUCEAffP8uXPz%2BbuVistZM%2BMKI%3D
US
der
471 b
shared
2544
iexplore.exe
GET
200
93.184.220.29:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAilokbNS1yMg9cCtLurU0k%3D
US
der
471 b
whitelisted
948
iexplore.exe
GET
200
204.79.197.200:80
http://www.bing.com/favicon.ico
US
image
237 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
2544
iexplore.exe
37.187.167.53:443
www.upload.ee
OVH SAS
FR
suspicious
2544
iexplore.exe
93.184.220.29:80
ocsp.digicert.com
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted
948
iexplore.exe
37.187.167.53:443
www.upload.ee
OVH SAS
FR
suspicious
948
iexplore.exe
204.79.197.200:80
www.bing.com
Microsoft Corporation
US
whitelisted
2404
iexplore.exe
37.187.167.53:80
www.upload.ee
OVH SAS
FR
suspicious
2404
iexplore.exe
37.187.167.53:443
www.upload.ee
OVH SAS
FR
suspicious
2544
iexplore.exe
37.187.167.53:80
www.upload.ee
OVH SAS
FR
suspicious
1832
system32t.exe
3.134.125.175:16863
0.tcp.ngrok.io
—
US
malicious

DNS requests

Domain
IP
Reputation
0.tcp.ngrok.io
  • 3.134.125.175
malicious
www.upload.ee
  • 37.187.167.53
whitelisted
ocsp.digicert.com
  • 93.184.220.29
whitelisted
status.rapidssl.com
  • 93.184.220.29
shared
api.bing.com
  • 13.107.5.80
whitelisted
www.bing.com
  • 204.79.197.200
  • 13.107.21.200
whitelisted

Threats

PID
Process
Class
Message
1052
svchost.exe
Potential Corporate Privacy Violation
ET POLICY DNS Query to a *.ngrok domain (ngrok.io)
1832
system32t.exe
A Network Trojan was detected
ET TROJAN Bladabindi/njRAT CnC Command (ll)
1832
system32t.exe
A Network Trojan was detected
MALWARE [PTsecurity] njRAT/Bladabindi
1832
system32t.exe
A Network Trojan was detected
MALWARE [PTsecurity] njRAT.Gen RAT outbound connection
12 ETPRO signatures available at the full report
No debug info
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Reports
Server.exe