MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa96c41edf3b9a54f597623dfae536b759c71736f986635b3e483f04ce64c099. 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: 8


Intelligence 8 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa96c41edf3b9a54f597623dfae536b759c71736f986635b3e483f04ce64c099
SHA3-384 hash: f8a1dcd7e234beee7d45831802e739f3973e695869c64f9b549bdc199a43f1d945be06c7d101e5e714c67f10d7ac8265
SHA1 hash: b7911118acc36c62c2287c80caf24ce2177338c5
MD5 hash: aca66be8e817228de7d64c1aa9295172
humanhash: social-oklahoma-wisconsin-sad
File name:Invoice copies.exe
Download: download sample
Signature njrat
Create hunting rule
File size:6'656 bytes
First seen:2022-10-25 18:36:31 UTC
Last seen:2022-10-31 10:56:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 96:kacZtnPkWKp3vvbLIPB7W+yaYtgMhNV99gL7zNt:kXnPkWQvbLIJ7WLNtJ3dgLd
Threatray 1'448 similar samples on MalwareBazaar
TLSH T1D6D1C600B3DA0633EFB68B76687747416338F324AD53DBAE7884724B6C527950A72B71
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
85.31.46.67:4432

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
85.31.46.67:4432 https://threatfox.abuse.ch/ioc/948821/

Intelligence

File Origin
# of uploads :
3
# of downloads :
332
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Invoice copies.exe
Verdict:
Malicious activity
Analysis date:
2022-10-25 18:42:00 UTC
Tags:
trojan
Link:
https://app.any.run/tasks/f9d0fbf3-9f63-44a0-879a-2afd84eff192

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/324112/
Detection(s):
SecuriteInfo.com.Heuristic.HEUR.AGEN.1232004.7946.30628.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/369536c8-f53e-4d67-bd09-bf89794460a6
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1097827
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates multiple autostart registry keys
Encrypted powershell cmdline option found
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Snort IDS alert for network traffic
Yara detected Costura Assembly Loader
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 730478 Sample: Invoice copies.exe Startdate: 25/10/2022 Architecture: WINDOWS Score: 100 50 Snort IDS alert for network traffic 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus / Scanner detection for submitted sample 2->54 56 8 other signatures 2->56 8 Invoice copies.exe 16 7 2->8         started        13 Ypsapewaiup.exe 14 3 2->13         started        15 Ypsapewaiup.exe 2 2->15         started        17 2 other processes 2->17 process3 dnsIp4 48 194.180.48.203, 49695, 49697, 49698 LVLT-10753US Germany 8->48 42 C:\Users\user\AppData\...\Ypsapewaiup.exe, PE32 8->42 dropped 44 C:\Users\...\Ypsapewaiup.exe:Zone.Identifier, ASCII 8->44 dropped 46 C:\Users\user\...\Invoice copies.exe.log, ASCII 8->46 dropped 60 Encrypted powershell cmdline option found 8->60 62 Creates multiple autostart registry keys 8->62 64 Injects a PE file into a foreign processes 8->64 19 Invoice copies.exe 2 4 8->19         started        23 powershell.exe 16 8->23         started        25 Invoice copies.exe 8->25         started        66 Antivirus detection for dropped file 13->66 68 Machine Learning detection for dropped file 13->68 27 powershell.exe 13->27         started        file5 signatures6 process7 file8 40 C:\Users\user\AppData\Roaming\update.exe, PE32 19->40 dropped 58 Creates multiple autostart registry keys 19->58 29 update.exe 14 2 19->29         started        32 attrib.exe 1 19->32         started        34 conhost.exe 23->34         started        36 conhost.exe 27->36         started        signatures9 process10 signatures11 70 Antivirus detection for dropped file 29->70 72 Machine Learning detection for dropped file 29->72 38 conhost.exe 32->38         started        process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aa96c41edf3b9a54f597623dfae536b759c71736f986635b3e483f04ce64c099/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-10-25 19:14:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vklmihw7honfj5mxmi67vzjww5m4ofzw7gdggwz6ja7qjtteycmq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
079a0f977b60a6115bcddb387d8783eeea8cdd7678369c01d0e7b8a6071bf123
njrat
5820ec12784630d61e498b8332b9f71be97db4d13d49ac1f818e3b88a48193e1
njrat
8454dbda35354737c7f1162466738d7077c0a9af21e93c2e49c2d7a8d5084647
njrat
87f4a4c323f26710b7acdc123173fa63f4ccb4f3c8239dfaa489ee69ab89f7cc
njrat
8c9d614da4ea17f4261a105adbe73992c0df1f5639310f78db244fdf3fe338fe
njrat
a4c035de8a4edb11a8cfaef2f2f8326d8909578cf9d5a5534edd4eb9d5a50680
njrat
ad87f3ad6fb14d2b79d7b7aac1b38bc04fd20757460da0f02cac139408df9969
njrat
d7448da27fa5cbe7df2df781ef5763cdcbb31f6e99d756a03fb1ff577e7043a2
njrat
e9fb11df00c7a833b875f7c68fc6d5ee3edeeac7c63d85fc4897f6aef7596f7c
njrat
eea1286b7f160f458a376a7c640b076ac424fa2bdeb8460488715f8989152de2
njrat
+ 1'438 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:updater persistence trojan
Link:
https://tria.ge/reports/221025-w9f3rsddf3/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Drops startup file
Loads dropped DLL
Executes dropped EXE
njRAT/Bladabindi
Malware Config
C2 Extraction:
alexanderhk228.hopto.org:4432
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bad1861a-1d9c-46a3-b9da-c082d3bb8805
Unpacked files
SH256 hash:
aa96c41edf3b9a54f597623dfae536b759c71736f986635b3e483f04ce64c099
MD5 hash:
aca66be8e817228de7d64c1aa9295172
SHA1 hash:
b7911118acc36c62c2287c80caf24ce2177338c5
Link:
https://www.unpac.me/results/6ef39154-e8df-44dd-a94a-e068f80b2040/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/aa96c41edf3b9a54f597623dfae536b759c71736f986635b3e483f04ce64c099

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/324112/

Comments