MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e5e11e02cec3f28ad19cabe5f684bc74f5e616d291e4e241dcd586552a33b5d5. 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 6 File information Comments
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SHA256 hash: e5e11e02cec3f28ad19cabe5f684bc74f5e616d291e4e241dcd586552a33b5d5
SHA3-384 hash: cbdb5af286aa9cafb0ac141b5c953e50e9a476fed400393691d7206088a0c4ffc9b0de93d2e23f02b07c8e82c498fb0c
SHA1 hash: c0e490e80e19250dfdac5c6ed3134e3b4a1239e9
MD5 hash: d1c665199bbd423918eade92fcd04267
humanhash: july-river-alabama-oklahoma
File name:akrien.bin
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2022-06-19 12:40:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 384:zHrpyEitlPJWtckUy8fygQ/TAe9MsIxcrAF+rMRTyN/0L+EcoinblneHQM3epzXH:L6zkX8fygQsbsISrM+rMRa8NuFpt
TLSH T16D033A4D7FE18168C5FD067B05B2D41207BAE04F6D23D90E8EE164AA3B632C58F54AF2
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter KdssSupport
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
300
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
akrien.exe
Verdict:
Malicious activity
Analysis date:
2022-06-19 11:09:19 UTC
Tags:
rat njrat bladabindi trojan
Link:
https://app.any.run/tasks/990eb451-2898-4472-b038-9169a3ec232a

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/281275/
Detection(s):
Win.Packed.Bladabindi-7994427-0
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Win.Trojan.Generic-6417450-0
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Win.Trojan.Generic-6454614-0
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Win.Trojan.Generic-6454615-0
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Win.Trojan.B-468
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
Searching for the window
Сreating synchronization primitives
Enabling the 'hidden' option for analyzed file
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
Creating a window
Sending a custom TCP request
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
Launching a tool to kill processes
Creating a file in the mass storage device
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe fingerprint greyware keylogger njrat packed rat stealer
Link:
https://www.filescan.io/uploads/62af19645c08d80e8edb8de0/reports/bbba596f-3acf-47c5-9667-d25f98d19bd8/overview
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.
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/da567cb3-96e6-4b77-8587-c6cfe9f61f56
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1015879
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Contains functionality to log keystrokes (.Net Source)
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
Drops PE files with benign system names
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Protects its processes via BreakOnTermination flag
Sigma detected: Drops fake system file at system root drive
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses netsh to modify the Windows network and firewall settings
Yara detected Generic Downloader
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 648374 Sample: akrien.bin Startdate: 19/06/2022 Architecture: WINDOWS Score: 100 52 Snort IDS alert for network traffic 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus detection for URL or domain 2->56 58 13 other signatures 2->58 8 akrien.exe 1 6 2->8         started        12 svchost.exe 9 1 2->12         started        15 svchost.exe 3 2->15         started        17 8 other processes 2->17 process3 dnsIp4 40 C:\Users\user\AppData\Roaming\svchost.exe, PE32 8->40 dropped 42 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 8->42 dropped 44 C:\Users\user\AppData\...\akrien.exe.log, ASCII 8->44 dropped 68 Drops PE files with benign system names 8->68 19 svchost.exe 3 11 8->19         started        50 127.0.0.1 unknown unknown 12->50 file5 signatures6 process7 dnsIp8 46 7.tcp.eu.ngrok.io 3.125.188.168, 17530, 49767 AMAZON-02US United States 19->46 48 3.68.56.232, 17530, 49850 AMAZON-02US United States 19->48 32 C:\svchost.exe, PE32 19->32 dropped 34 C:\...\a8d3f5ff1fb2c9d23aa6fedb158beb17.exe, PE32 19->34 dropped 36 C:\svchost.exe:Zone.Identifier, ASCII 19->36 dropped 38 2 other malicious files 19->38 dropped 60 Antivirus detection for dropped file 19->60 62 System process connects to network (likely due to code injection or exploit) 19->62 64 Protects its processes via BreakOnTermination flag 19->64 66 7 other signatures 19->66 24 netsh.exe 1 3 19->24         started        26 taskkill.exe 1 19->26         started        file9 signatures10 process11 process12 28 conhost.exe 24->28         started        30 conhost.exe 26->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e5e11e02cec3f28ad19cabe5f684bc74f5e616d291e4e241dcd586552a33b5d5/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2022-06-19 12:41:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
25 of 26 (96.15%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4xqr4awoypzivum4vps7nbf4ot26mfwsshsoeqo42wdfkkrtwxkq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked evasion persistence suricata trojan
Link:
https://tria.ge/reports/220619-pwrh1seebj/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops autorun.inf file
Adds Run key to start application
Checks computer location settings
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
Malware Config
C2 Extraction:
7.tcp.eu.ngrok.io:17530
Unpacked files
SH256 hash:
e5e11e02cec3f28ad19cabe5f684bc74f5e616d291e4e241dcd586552a33b5d5
MD5 hash:
d1c665199bbd423918eade92fcd04267
SHA1 hash:
c0e490e80e19250dfdac5c6ed3134e3b4a1239e9
Detections:
win_njrat_g1
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/00d91d20-1e7c-4f92-9bea-fc745fe273fb/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e5e11e02cec3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
Link:
https://yomi.yoroi.company/submissions/e5e11e02cec3f28ad19cabe5f684bc74f5e616d291e4e241dcd586552a33b5d5

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:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_netsh_firewall_command
Create hunting rule
Author:SECUINFRA Falcon Team
Rule name:SUSP_Ngrok_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an ngrok.io URL. This can be used as C2 channel
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

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/281275/

Comments