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File name:

gameservers.exe

Full analysis: https://app.any.run/tasks/31f627ee-7cc7-464f-90ea-983e60f9f3f4
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.

Analysis date: January 24, 2022, 20:42:34
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:

C5879B0E11C48DFBE4318E886AF8CED9

SHA1:

34A5DF3F6BCCF6296750869852F1D7FEB1BE30DB

SHA256:

9ACE6F918C300E2D5465534C26F265C181919B4844AB58691BD9E615479AC651

SSDEEP:

1536:kGnJD/HBZbszKu9AZpd7r1jEwzGi1dDKDSgS:kGmzK4AZ3HCi1d83

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

    • Uses Task Scheduler to run other applications

      • server.exe (PID: 3804)
    • Writes to a start menu file

      • server.exe (PID: 3804)
    • Loads the Task Scheduler COM API

      • schtasks.exe (PID: 1972)
    • NJRAT was detected

      • server.exe (PID: 3804)
    • Connects to CnC server

      • server.exe (PID: 3804)
  • SUSPICIOUS

    • Reads the computer name

      • gameservers.exe (PID: 2160)
      • server.exe (PID: 3804)
      • StUpdate.exe (PID: 2408)
      • filezilla.exe (PID: 3088)
    • Checks supported languages

      • gameservers.exe (PID: 2160)
      • server.exe (PID: 3804)
      • StUpdate.exe (PID: 2408)
      • filezilla.exe (PID: 3088)
    • Drops a file with a compile date too recent

      • gameservers.exe (PID: 2160)
      • server.exe (PID: 3804)
    • Executable content was dropped or overwritten

      • gameservers.exe (PID: 2160)
      • server.exe (PID: 3804)
    • Starts itself from another location

      • gameservers.exe (PID: 2160)
    • Creates files in the user directory

      • gameservers.exe (PID: 2160)
      • server.exe (PID: 3804)
      • filezilla.exe (PID: 3088)
    • Uses NETSH.EXE for network configuration

      • server.exe (PID: 3804)
    • Reads Environment values

      • netsh.exe (PID: 4032)
      • netsh.exe (PID: 2596)
      • netsh.exe (PID: 2672)
      • server.exe (PID: 3804)
    • Executed via Task Scheduler

      • StUpdate.exe (PID: 2408)
      • StUpdate.exe (PID: 3740)
    • Reads Microsoft Outlook installation path

      • iexplore.exe (PID: 3112)
  • INFO

    • Checks supported languages

      • netsh.exe (PID: 4032)
      • schtasks.exe (PID: 1972)
      • netsh.exe (PID: 2596)
      • netsh.exe (PID: 2672)
      • iexplore.exe (PID: 3112)
      • iexplore.exe (PID: 2648)
      • WINWORD.EXE (PID: 2904)
    • Reads the computer name

      • netsh.exe (PID: 4032)
      • netsh.exe (PID: 2596)
      • netsh.exe (PID: 2672)
      • schtasks.exe (PID: 1972)
      • iexplore.exe (PID: 2648)
      • iexplore.exe (PID: 3112)
      • WINWORD.EXE (PID: 2904)
    • Manual execution by user

      • iexplore.exe (PID: 2648)
      • WINWORD.EXE (PID: 2904)
      • filezilla.exe (PID: 3088)
    • Changes internet zones settings

      • iexplore.exe (PID: 2648)
    • Application launched itself

      • iexplore.exe (PID: 2648)
    • Creates files in the user directory

      • WINWORD.EXE (PID: 2904)
    • Reads settings of System Certificates

      • filezilla.exe (PID: 3088)
      • iexplore.exe (PID: 2648)
    • Checks Windows Trust Settings

      • iexplore.exe (PID: 2648)
    • Reads Microsoft Office registry keys

      • WINWORD.EXE (PID: 2904)
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

Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x18f1e
UninitializedDataSize: -
InitializedDataSize: 512
CodeSize: 94208
LinkerVersion: 8
PEType: PE32
TimeStamp: 2022:01:24 21:32:17+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 24-Jan-2022 20:32:17

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: 2
Time date stamp: 24-Jan-2022 20:32:17
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
0x00016F24
0x00017000
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.5957
.reloc
0x0001A000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.10191

Imports

mscoree.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
54
Monitored processes
12
Malicious processes
1
Suspicious processes
1

Behavior graph

Click at the process to see the details
drop and start start gameservers.exe #NJRAT server.exe netsh.exe no specs netsh.exe no specs netsh.exe no specs schtasks.exe no specs stupdate.exe no specs stupdate.exe iexplore.exe iexplore.exe no specs winword.exe no specs filezilla.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2160"C:\Users\admin\AppData\Local\Temp\gameservers.exe" C:\Users\admin\AppData\Local\Temp\gameservers.exe
Explorer.EXE
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3804"C:\Users\admin\AppData\Local\Temp\server.exe" C:\Users\admin\AppData\Local\Temp\server.exe
gameservers.exe
User:
admin
Integrity Level:
MEDIUM
4032netsh firewall add allowedprogram "C:\Users\admin\AppData\Local\Temp\server.exe" "server.exe" ENABLEC:\Windows\system32\netsh.exeserver.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2596netsh firewall delete allowedprogram "C:\Users\admin\AppData\Local\Temp\server.exe"C:\Windows\system32\netsh.exeserver.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2672netsh firewall add allowedprogram "C:\Users\admin\AppData\Local\Temp\server.exe" "server.exe" ENABLEC:\Windows\system32\netsh.exeserver.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
1972schtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\admin\AppData\Local\Temp/StUpdate.exeC:\Windows\system32\schtasks.exeserver.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Manages scheduled tasks
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
3740C:\Users\admin\AppData\Local\Temp/StUpdate.exe C:\Users\admin\AppData\Local\Temp\StUpdate.exetaskeng.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
3221226540
2408C:\Users\admin\AppData\Local\Temp/StUpdate.exe C:\Users\admin\AppData\Local\Temp\StUpdate.exe
taskeng.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
2648"C:\Program Files\Internet Explorer\iexplore.exe" -nohomeC:\Program Files\Internet Explorer\iexplore.exe
Explorer.EXE
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Internet Explorer
Version:
11.00.9600.16428 (winblue_gdr.131013-1700)
3112"C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:2648 CREDAT:267521 /prefetch:2C:\Program Files\Internet Explorer\iexplore.exeiexplore.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Internet Explorer
Version:
11.00.9600.16428 (winblue_gdr.131013-1700)
Total events
15 952
Read events
14 984
Write events
0
Delete events
0

Modification events

No data
Executable files
4
Suspicious files
3
Text files
7
Unknown types
5

Dropped files

PID
Process
Filename
Type
2904WINWORD.EXEC:\Users\admin\AppData\Local\Temp\CVRC1F5.tmp.cvr
MD5:
SHA256:
3804server.exeC:\Users\admin\AppData\Local\Temp\StUpdate.exeexecutable
MD5:C5879B0E11C48DFBE4318E886AF8CED9
SHA256:9ACE6F918C300E2D5465534C26F265C181919B4844AB58691BD9E615479AC651
2904WINWORD.EXEC:\Users\admin\Desktop\~$cecomponents.rtfpgc
MD5:3BAB0A702728D7C85A5FE16815FD72F9
SHA256:98487B3FE3EA294368D562B1033CF0FC779C982BBCDBAAC74A3E156BBD18109B
3804server.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b8f0ea7d3eefb943b65713c8e9cf0e80Windows Update.exeexecutable
MD5:C5879B0E11C48DFBE4318E886AF8CED9
SHA256:9ACE6F918C300E2D5465534C26F265C181919B4844AB58691BD9E615479AC651
3804server.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exeexecutable
MD5:C5879B0E11C48DFBE4318E886AF8CED9
SHA256:9ACE6F918C300E2D5465534C26F265C181919B4844AB58691BD9E615479AC651
2904WINWORD.EXEC:\Users\admin\AppData\Roaming\Microsoft\Office\Recent\index.datini
MD5:F4FFA95B2F5A9DCC113E43B3AB179378
SHA256:2FA765D71993038994E7025923347D4AEAA5C7AB07EEEBA99F8AB94DFCF92AD7
2904WINWORD.EXEC:\Users\admin\AppData\Roaming\Microsoft\Templates\~$Normal.dotmpgc
MD5:2A3952F92AFFF17FC7EBD885EDD68A74
SHA256:2CE505C0A867ACC77EAA9B98A3C586509896966D72DDCCCC291907CA52E3CC76
2648iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\6BADA8974A10C4BD62CC921D13E43B18_711ED44619924BA6DC33E69F97E7FF63der
MD5:FC990EAA7247546FB67C18916A4CAC9B
SHA256:294F5BE9159C87842AD3173FE7CDA168C9F2010C6D428085A8AC30EF436CA993
2648iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\6BADA8974A10C4BD62CC921D13E43B18_711ED44619924BA6DC33E69F97E7FF63binary
MD5:D922491E2B9CCB6941F478156CC5336E
SHA256:D7BCF9D61E49B6A7442DCE2F94CDA009C1BECA7210B16D1F901A8FC0F0A7674B
2160gameservers.exeC:\Users\admin\AppData\Roaming\apptext
MD5:8FC22F973BEC7F0525710DCF02F05EDF
SHA256:BA0E21CEB11B1EC62709B0141373CE65DE5A156B822C9B6D3C3F9ED9AB224A46
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
3
TCP/UDP connections
10
DNS requests
5
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2648
iexplore.exe
GET
200
93.184.220.29:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTBL0V27RVZ7LBduom%2FnYB45SPUEwQU5Z1ZMIJHWMys%2BghUNoZ7OrUETfACEA8Ull8gIGmZT9XHrHiJQeI%3D
US
der
1.47 Kb
whitelisted
2648
iexplore.exe
GET
200
23.32.238.178:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?a2fdea9487a02465
US
compressed
4.70 Kb
whitelisted
2648
iexplore.exe
GET
200
23.32.238.178:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?50aefe0db0853a04
US
compressed
4.70 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2648
iexplore.exe
93.184.220.29:80
ocsp.digicert.com
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted
2648
iexplore.exe
204.79.197.200:443
www.bing.com
Microsoft Corporation
US
whitelisted
3804
server.exe
37.1.208.100:1156
Swiftway Sp. z o.o.
US
malicious
2648
iexplore.exe
23.32.238.178:80
ctldl.windowsupdate.com
XO Communications
US
suspicious

DNS requests

Domain
IP
Reputation
api.bing.com
  • 13.107.13.80
whitelisted
www.bing.com
  • 204.79.197.200
  • 13.107.21.200
whitelisted
ctldl.windowsupdate.com
  • 23.32.238.178
  • 23.32.238.201
whitelisted
ocsp.digicert.com
  • 93.184.220.29
whitelisted

Threats

PID
Process
Class
Message
3804
server.exe
A Network Trojan was detected
ET TROJAN Generic njRAT/Bladabindi CnC Activity (ll)
3804
server.exe
A Network Trojan was detected
ET TROJAN njrat ver 0.7d Malware CnC Callback (Remote Desktop)
3804
server.exe
A Network Trojan was detected
ET TROJAN njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
3804
server.exe
A Network Trojan was detected
ET TROJAN njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
3 ETPRO signatures available at the full report
No debug info