File name:

RETO1

Full analysis: https://app.any.run/tasks/b5fb694e-075b-4845-af39-7995781da53a
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.

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Analysis date: May 20, 2021, 20:27:23
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
njrat
bladabindi
trojan
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

370D7909B953E84D6304172FC26B9B19

SHA1:

0770C5136AB33DB71501E1AB68B8E02A347274B5

SHA256:

1CEF2C3BD08F04FA4EA11E8E70BDCC73A7CA35512E457488F1E9BE40C0089862

SSDEEP:

6144:4dIJxLyA3iyqFz9ZeaBQf1VdRQ/vqkg1gEagdQH:XfLysJq9e7f1V7uikFg

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

      • lssas.exe (PID: 2544)

    • Connects to CnC server

      • lssas.exe (PID: 2544)

    • Changes the autorun value in the registry

      • lssas.exe (PID: 2544)

    • NJRAT was detected

      • lssas.exe (PID: 2544)

  • SUSPICIOUS

    • Uses NETSH.EXE for network configuration

      • lssas.exe (PID: 2544)

    • Executable content was dropped or overwritten

      • RETO1.exe (PID: 2220)
      • lssas.exe (PID: 2544)

    • Creates files in the user directory

      • lssas.exe (PID: 2544)
      • RETO1.exe (PID: 2220)

    • Starts itself from another location

      • RETO1.exe (PID: 2220)

  • 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 | Generic CIL Executable (.NET, Mono, etc.) (82.9)
.dll | Win32 Dynamic Link Library (generic) (7.4)
.exe | Win32 Executable (generic) (5.1)
.exe | Generic Win/DOS Executable (2.2)
.exe | DOS Executable Generic (2.2)

EXIF

EXE

Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x20dce
UninitializedDataSize: -
InitializedDataSize: 118272
CodeSize: 126464
LinkerVersion: 11
PEType: PE32
TimeStamp: 2021:02:03 02:15:29+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 03-Feb-2021 01:15:29

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: 03-Feb-2021 01:15:29
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
0x0001EDD4
0x0001EE00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
7.95765
.rsrc
0x00022000
0x0001CA80
0x0001CC00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
7.56027
.reloc
0x00040000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.0815394

Resources

Title
Entropy
Size
Codepage
Language
Type
1
4.96801
487
Latin 1 / Western European
UNKNOWN
RT_MANIFEST
50
2.48175
132
Latin 1 / Western European
UNKNOWN
RT_GROUP_ICON
51
5.78498
2216
Latin 1 / Western European
UNKNOWN
RT_ICON
52
5.02264
1736
Latin 1 / Western European
UNKNOWN
RT_ICON
53
3.6627
1384
Latin 1 / Western European
UNKNOWN
RT_ICON
54
7.94885
89575
Latin 1 / Western European
UNKNOWN
RT_ICON
55
5.14952
9640
Latin 1 / Western European
UNKNOWN
RT_ICON
56
5.24234
4264
Latin 1 / Western European
UNKNOWN
RT_ICON
57
5.37826
2440
Latin 1 / Western European
UNKNOWN
RT_ICON
58
5.29783
1128
Latin 1 / Western European
UNKNOWN
RT_ICON

Imports

mscoree.dll
No data.
screenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
39
Monitored processes
3
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start reto1.exe #NJRAT lssas.exe netsh.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1532netsh firewall add allowedprogram "C:\Users\admin\AppData\Roaming\lssas.exe" "lssas.exe" ENABLEC:\Windows\system32\netsh.exe—lssas.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)
Modules
Images
c:\windows\system32\netsh.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\credui.dll
c:\windows\system32\user32.dll
2220"C:\Users\admin\AppData\Local\Temp\RETO1.exe" C:\Users\admin\AppData\Local\Temp\RETO1.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\reto1.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
2544"C:\Users\admin\AppData\Roaming\lssas.exe" C:\Users\admin\AppData\Roaming\lssas.exe
RETO1.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\roaming\lssas.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
Total events
514
Read events
401
Write events
113
Delete events
0

Modification events

(PID) Process:(2220) RETO1.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(2220) RETO1.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(2220) RETO1.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(2544) lssas.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(2544) lssas.exeKey:HKEY_CURRENT_USER\Environment
Operation:writeName:SEE_MASK_NOZONECHECKS
Value:
1
(PID) Process:(1532) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(1532) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:@%SystemRoot%\system32\dhcpqec.dll,-100
Value:
DHCP Quarantine Enforcement Client
(PID) Process:(1532) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:@%SystemRoot%\system32\dhcpqec.dll,-101
Value:
Provides DHCP based enforcement for NAP
(PID) Process:(1532) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:@%SystemRoot%\system32\dhcpqec.dll,-103
Value:
1.0
(PID) Process:(1532) netsh.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E
Operation:writeName:@%SystemRoot%\system32\dhcpqec.dll,-102
Value:
Microsoft Corporation
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
2220RETO1.exeC:\Users\admin\AppData\Roaming\lssas.exeexecutable
MD5:—
SHA256:—
2544lssas.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\75efa9057e365531edb4605a803809a8.exeexecutable
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
2
DNS requests
2
Threats
2

HTTP requests

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2544
lssas.exe
91.208.184.78:80
—
LeaderTelecom Ltd.
GB
malicious

DNS requests

Domain
IP
Reputation
dns.msftncsi.com
  • 131.107.255.255
shared

Threats

PID
Process
Class
Message
2544
lssas.exe
A Network Trojan was detected
ET TROJAN Bladabindi/njRAT CnC Command (ll)
1 ETPRO signatures available at the full report
No debug info