MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31c9f1e8d86f03f7c5c4c3b309b8522a6cb5f98c1f98f661bf652b751e3a5d35. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


njrat


Vendor detections: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31c9f1e8d86f03f7c5c4c3b309b8522a6cb5f98c1f98f661bf652b751e3a5d35
SHA3-384 hash: 27c2753ac06a4d18837bb91bacf7bfb7a677f115b426d8c91b9065c28783a3ae0ffa95e8812ad2c48ea24bb97aeff58b
SHA1 hash: 89c625cddc5549243d2b779bd0816ecb1e4a08d7
MD5 hash: 581362eb646979b687d1082101b9a498
humanhash: ohio-red-romeo-six
File name:581362eb646979b687d1082101b9a498.exe
Download: download sample
Signature njrat
Create hunting rule
File size:906'752 bytes
First seen:2023-02-27 19:20:58 UTC
Last seen:2023-02-27 20:30:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:FE3lE83hByAC7Ij/t2AWBmkWcpA7u6OHg:GlE8qS/t2Ac64g
Threatray 392 similar samples on MalwareBazaar
TLSH T12115CF32728FA6B1D34A57B6CCD68E0493F2C951A2F3E20F271516C528033EBDE6565E
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 15a8a2ec7898484c (1 x njrat)
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
103.231.107.52:1717

Intelligence

File Origin
# of uploads :
2
# of downloads :
222
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
581362eb646979b687d1082101b9a498.exe
Verdict:
Malicious activity
Analysis date:
2023-02-27 19:21:35 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/5540c52c-f2f5-47de-a11f-8d7dc14a65cd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/370404/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.65674000.7872.5156.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Sending a custom TCP request
Creating a process with a hidden window
Creating a window
DNS request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63fd02a08ef624b94df31dca/reports/f2739e8e-5b1d-4266-9182-fc708e1aa678/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/31c9f1e8d86f03f7c5c4c3b309b8522a6cb5f98c1f98f661bf652b751e3a5d35
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cb09f9d2-48d4-4bd8-97ad-a438652d1882
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1183507
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Uses dynamic DNS services
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 816342 Sample: eKd4XGO05r.exe Startdate: 27/02/2023 Architecture: WINDOWS Score: 100 31 Snort IDS alert for network traffic 2->31 33 Malicious sample detected (through community Yara rule) 2->33 35 Antivirus detection for URL or domain 2->35 37 6 other signatures 2->37 8 eKd4XGO05r.exe 1 5 2->8         started        11 server.exe 3 2->11         started        13 server.exe 2 2->13         started        15 server.exe 2 2->15         started        process3 file4 25 C:\Users\user\AppData\Local\Temp\server.exe, PE32 8->25 dropped 27 C:\Users\user\AppData\...\eKd4XGO05r.exe.log, ASCII 8->27 dropped 17 server.exe 4 2 8->17         started        process5 dnsIp6 29 besso1a1.ddns.net 103.231.107.52, 1717, 49696 LIHGL-AS-AP24hkglobalBGPHK Hong Kong 17->29 39 Antivirus detection for dropped file 17->39 41 Multi AV Scanner detection for dropped file 17->41 43 Machine Learning detection for dropped file 17->43 45 3 other signatures 17->45 21 netsh.exe 3 17->21         started        signatures7 process8 process9 23 conhost.exe 21->23         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31c9f1e8d86f03f7c5c4c3b309b8522a6cb5f98c1f98f661bf652b751e3a5d35/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-02-25 01:36:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 39 (51.28%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ghe7d2gyn4b7proeyozqtocsfjwll6mmd6mpmyn7muvxkhr2lu2q._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
1c2de35b1875197d605b226ac3a898ce2330a1b1c2b557f1931a0848f1655b27
njrat
2b178a6e38b12767d5032d4f265e6f6e6491a4e6dd7932000da44daadb276dd6
njrat
3dff7ec382a12eb1b4765c5e0927bcb9d7f34461dfd113cbc51fbb1aa0a33761
njrat
3e7cf8b2e3f6d13ecfccc5eb1cfb57dfe12303e3315500cecf37f53687a3c784
njrat
44af542480535de8b9060996210572ca8e7e4873ca4d8537e23dfbca6219fa6b
njrat
7291762d6b4a2222d054eb69fc32be59d4f43b248c90848730ffb14e03665ba0
njrat
9e38c4343ab5ae60cad93323da9745d40c6856f6092992bfb68b36368e61a8c0
njrat
c7b5dd67a462b9994b0596e8b4aef43ae616077aa900315b0a565e58bc6347aa
njrat
dd9f42733ea79ecf71009de2bc28ba54bbd66d3ef91b16bb5863e5e1b3bd9f79
njrat
+ 382 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked evasion persistence trojan
Link:
https://tria.ge/reports/230227-x2nnbafc98/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
.NET Reactor proctector
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
besso1a1.ddns.net:1717
Unpacked files
SH256 hash:
4ba0b8d45c0ef2e21fd758a076471fd31e2161168eb8aa79008d8291d200b89c
MD5 hash:
75df31349a029b3bf3dd77a8ef562b9d
SHA1 hash:
a18b2809ac6d85a0580bc3c1b20c7fafa0635b93
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/341ab329-c162-437e-a214-be98668ea866/
SH256 hash:
31c9f1e8d86f03f7c5c4c3b309b8522a6cb5f98c1f98f661bf652b751e3a5d35
MD5 hash:
581362eb646979b687d1082101b9a498
SHA1 hash:
89c625cddc5549243d2b779bd0816ecb1e4a08d7
Link:
https://www.unpac.me/results/341ab329-c162-437e-a214-be98668ea866/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/31c9f1e8d86f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.58
Link:
https://yomi.yoroi.company/submissions/31c9f1e8d86f03f7c5c4c3b309b8522a6cb5f98c1f98f661bf652b751e3a5d35

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/370404/

Comments