MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a66b1473c334a14386db0e41b0c3eaf394370c9a38491f065ad46205a3805efc. 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: 13


Intelligence 13 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a66b1473c334a14386db0e41b0c3eaf394370c9a38491f065ad46205a3805efc
SHA3-384 hash: 95184c1de8f6bf21c9d0897c36efd59dba3a566a1c6d839e3673d35b0e2f856fdde1eac4cbc90cf406c8da73be9902cd
SHA1 hash: a382fdddc8b9c47d57878c8e3a24bd991400a76b
MD5 hash: e4df57bd77bee2f9c9e3ea85d9140cc7
humanhash: salami-leopard-high-item
File name:HEUR-Trojan.Win32.Generic-a66b1473c334a14386db0e41b0c3eaf394370c9a38491f065ad46205a3805efc
Download: download sample
Signature njrat
Create hunting rule
File size:679'424 bytes
First seen:2022-09-22 17:41:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:huk4uHbAxQCDsAePggw38ZFjejph6YKg4Mk0V/hDix9WE3QqH3csD4z:hJt7AGMExw38ZFjejph6YKg4MLC33csW
TLSH T155E44AA2A6F4EF13F3BF4E78A3711D4002B054235B8AC245B8EA97D519E3A60752F5D3
TrID 53.8% (.RLL) Microsoft Resource Library (x86) (177572/6/26)
22.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
3.9% (.SCR) Windows screen saver (13101/52/3)
3.1% (.EXE) Win64 Executable (generic) (10523/12/4)
Reporter petikvx
Tags:exe NjRAT Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
599
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
HARMFULL SYS FCKER.exe
Verdict:
Malicious activity
Analysis date:
2021-07-31 04:27:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/71e3f235-f4ae-467e-8fcb-ebf8839875e0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/312445/
Detection(s):
Win.Packed.Msilperseus-9220094-0
Create hunting rule

Win.Packed.Generic-9795615-0
Create hunting rule

Win.Packed.Generic-9795616-0
Create hunting rule

Win.Malware.Trojanx-9937146-0
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Creating a file
Launching a process
Sending a custom TCP request
Enabling the 'hidden' option for files in the %temp% directory
DNS request
Using the Windows Management Instrumentation requests
Creating a window
Modifying a system file
Replacing files
Launching a service
Searching for synchronization primitives
Changing a file
Launching the process to change network settings
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Blocking the Windows Defender launch
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
75%
Tags:
anti-vm cmd.exe dllhost.exe fingerprint njrat packed rat
Link:
https://www.filescan.io/uploads/632c9f3039767769653d1514/reports/7ba876d8-96a9-4843-8a04-43f28c71c616/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:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f7349a7b-c12b-4e27-a13d-116ff54c8d6d
Result
Threat name:
njRat, NoCry, TrojanRansom
Create hunting rule
Detection:
malicious
Classification:
rans.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1075514
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
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates multiple autostart registry keys
Detected njRat
Drops PE files to the startup folder
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Modifies Group Policy settings
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Query firmware table information (likely to detect VMs)
Self deletion via cmd or bat file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Defender Control Hacktool
Yara detected Generic Downloader
Yara detected Njrat
Yara detected NoCry Ransomware
Yara detected TrojanRansom
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 708057 Sample: PItnO94pXq.exe Startdate: 22/09/2022 Architecture: WINDOWS Score: 100 76 rift.wtf 2->76 78 cdn.discordapp.com 2->78 80 3 other IPs or domains 2->80 88 Malicious sample detected (through community Yara rule) 2->88 90 Antivirus detection for dropped file 2->90 92 Antivirus / Scanner detection for submitted sample 2->92 94 14 other signatures 2->94 10 PItnO94pXq.exe 6 2->10         started        14 Server.exe 2->14         started        16 PItnO94pXq.exe 2->16         started        18 6 other processes 2->18 signatures3 process4 file5 60 C:\Users\user\AppData\...\PItnO94pXq.exe, PE32 10->60 dropped 62 C:\Users\...\PItnO94pXq.exe:Zone.Identifier, ASCII 10->62 dropped 64 C:\Users\user\AppData\...\PItnO94pXq.exe.log, ASCII 10->64 dropped 104 Query firmware table information (likely to detect VMs) 10->104 106 Self deletion via cmd or bat file 10->106 108 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->108 20 PItnO94pXq.exe 16 6 10->20         started        25 cmd.exe 1 10->25         started        110 Antivirus detection for dropped file 14->110 112 Multi AV Scanner detection for dropped file 14->112 114 Machine Learning detection for dropped file 14->114 27 PItnO94pXq.exe 16->27         started        signatures6 process7 dnsIp8 82 cdn.discordapp.com 162.159.130.233, 443, 49703 CLOUDFLARENETUS United States 20->82 84 192.168.2.1 unknown unknown 20->84 54 C:\Users\user\AppData\...\juscheduler.exe, PE32 20->54 dropped 56 C:\Users\user\AppData\...\KernelUpdate2.exe, PE32 20->56 dropped 58 C:\Users\user\AppData\...\KernelUpdate1.exe, PE32 20->58 dropped 96 Antivirus detection for dropped file 20->96 98 Multi AV Scanner detection for dropped file 20->98 100 Query firmware table information (likely to detect VMs) 20->100 102 2 other signatures 20->102 29 KernelUpdate1.exe 4 6 20->29         started        34 KernelUpdate2.exe 2 38 20->34         started        36 cmd.exe 1 20->36         started        38 conhost.exe 25->38         started        40 choice.exe 1 25->40         started        file9 signatures10 process11 dnsIp12 86 198.54.133.72, 59249 TZULOUS United States 29->86 68 C:\Users\user\AppData\...\Java update.exe, PE32 29->68 dropped 70 C:\Users\user\AppData\Local\Temp\Server.exe, PE32 29->70 dropped 120 Antivirus detection for dropped file 29->120 122 Multi AV Scanner detection for dropped file 29->122 124 Protects its processes via BreakOnTermination flag 29->124 132 2 other signatures 29->132 42 schtasks.exe 29->42         started        72 C:\Users\user\...\qRERbdKw22juwi2Y.exe, PE32 34->72 dropped 74 C:\Users\user\3D Objects\desktop.ini.Cry, MIPSEL-BE 34->74 dropped 126 Machine Learning detection for dropped file 34->126 128 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 34->128 130 Drops PE files to the startup folder 34->130 44 juscheduler.exe 6 36->44         started        48 conhost.exe 36->48         started        file13 signatures14 process15 file16 50 conhost.exe 42->50         started        66 C:\Windows\System32behaviorgraphroupPolicy\gpt.ini, ASCII 44->66 dropped 116 Multi AV Scanner detection for dropped file 44->116 118 Modifies Group Policy settings 44->118 52 juscheduler.exe 44->52         started        signatures17 process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a66b1473c334a14386db0e41b0c3eaf394370c9a38491f065ad46205a3805efc/
Threat name:
Win32.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2021-08-02 11:53:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
34 of 43 (79.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uzvri46dgsquhbw3bza3bq7k6okdode2hber6bs22rrali4al36a._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 ransomware spyware stealer trojan vmprotect
Link:
https://tria.ge/reports/220922-v92h2afhbl/
Behaviour
Creates scheduled task(s)
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in System32 directory
Sets desktop wallpaper using registry
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Drops startup file
Loads dropped DLL
Reads user/profile data of web browsers
Windows security modification
Disables Task Manager via registry modification
Downloads MZ/PE file
Executes dropped EXE
Modifies extensions of user files
VMProtect packed file
Modifies security service
njRAT/Bladabindi
Malware Config
C2 Extraction:
198.54.133.72:59249
Gathering data
Unpacked files
SH256 hash:
bafa6ed04ca2782270074127a0498dde022c2a9f4096c6bb2b8e3c08bb3d404d
MD5 hash:
0bd34aa29c7ea4181900797395a6da78
SHA1 hash:
ddffdcef29daddc36ca7d8ae2c8e01c1c8bb23a8
Link:
https://www.unpac.me/results/d5d38db2-c5be-44cb-b815-8917b5961894/
Parent samples :
c21aa7be1ee9b32dd1d19f84b901f7bcd410584e89b570051a9603e547158d42
e723709ebd1439aa76c850f99d7843b0125f5c8456a53ade128da884e650382e
ee5b17af1bea3ce53b9a6bb09c21f634b9465fe505a01177b9eb33943f3021d3
4e90fa3f4197c83ee858b522e2a99a8145da5e0f972f06a9b825e4a2781dc550
SH256 hash:
7b11cf9dec3d302762fad7170f6d901ff1512f41c62ffc4d29c6122a5b7440e4
MD5 hash:
08217ec28a87d1311d51fb77d5eea37e
SHA1 hash:
d689cf420858c8fa2a2b819e6e62272c149b0fef
Link:
https://www.unpac.me/results/d5d38db2-c5be-44cb-b815-8917b5961894/
SH256 hash:
666d44798d94eafa1ed21af79e9bc0293ffd96f863ab5d87f78bcee9ef9ffd6b
MD5 hash:
17ed442e8485ac3f7dc5b3c089654a61
SHA1 hash:
d3a17c1fdd6d54951141053f88bf8238dea0b937
Link:
https://www.unpac.me/results/d5d38db2-c5be-44cb-b815-8917b5961894/
SH256 hash:
e8a21b70b0c351d344ff21ac0c90a1d1473baeb5448c75a93fc892627d63481e
MD5 hash:
93f60615483ac2d688014fb8abb49493
SHA1 hash:
a9e62e660df816b144eedf50634f79bad4ae5aaa
Link:
https://www.unpac.me/results/d5d38db2-c5be-44cb-b815-8917b5961894/
SH256 hash:
966a474060a8aca70c73ba09d0b6fe2353035961c7107b9003ef879c010ff8da
MD5 hash:
02c63f568e598aad85dd401d7b26e82a
SHA1 hash:
2da9ec7612835e1f69d4a93aa2d49ec9bdff7f7c
Link:
https://www.unpac.me/results/d5d38db2-c5be-44cb-b815-8917b5961894/
SH256 hash:
a66b1473c334a14386db0e41b0c3eaf394370c9a38491f065ad46205a3805efc
MD5 hash:
e4df57bd77bee2f9c9e3ea85d9140cc7
SHA1 hash:
a382fdddc8b9c47d57878c8e3a24bd991400a76b
Link:
https://www.unpac.me/results/d5d38db2-c5be-44cb-b815-8917b5961894/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a66b1473c334/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a66b1473c334a14386db0e41b0c3eaf394370c9a38491f065ad46205a3805efc

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_Njrat_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MAL_njrat
Create hunting rule
Author:SECUINFRA Falcon Team
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:RansomwareTest1
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest2
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest3
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest4
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest5
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest6
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest7
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:Skystars_LightDefender_Njrat_Rule
Create hunting rule
Author:Skystars LightDefender
Description:Detects Njrat
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/312445/

Comments