MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75. 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


NanoCore


Vendor detections: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75
SHA3-384 hash: b4ad3be3ca654d4c6145df34d9d0a5cb6ff6b64cecdce1e2209794e040717b853d019bd31c65175ab4f5f952c9e1f1cf
SHA1 hash: ea54931448d1b9b343e2d676504f8d353b56ae46
MD5 hash: 4a1d27ee33ad84f138c762a198333ffc
humanhash: oscar-finch-snake-lemon
File name:47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'265'664 bytes
First seen:2021-02-28 07:24:10 UTC
Last seen:2021-02-28 08:59:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:3G+TDQjde26VU2YWydBnfGZXocUTndiyXacQHGuUUT2Swh:3X0jdjRdWMBAsicnQHNr2Sw
Threatray 3 similar samples on MalwareBazaar
TLSH 914533379625DFEAE81801B7B357A589D645F03F50E371C321DE7B3AA384E5A1C13298
Reporter JAMESWT_WT
Tags:NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
565
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
onetap.rar
Verdict:
Malicious activity
Analysis date:
2021-02-22 15:04:17 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/81b2abb1-a92d-4e4d-9d69-2c9f141b93f9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
EnigmaStub
Create hunting rule
Link:
https://www.capesandbox.com/analysis/119951/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

PUA.Win.Packer.EnigmaProtector-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Launching a process
Sending a UDP request
Deleting a recently created file
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
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.
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/620814
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
Protects its processes via BreakOnTermination flag
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 359400 Sample: bn6KKSGuHJ Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for dropped file 2->46 48 13 other signatures 2->48 7 bn6KKSGuHJ.exe 1 14 2->7         started        12 bn6KKSGuHJ.exe 3 2->12         started        14 dhcpmon.exe 3 2->14         started        16 dhcpmon.exe 2 2->16         started        process3 dnsIp4 38 188.191.70.57, 49733, 49739, 49745 CSOUA Ukraine 7->38 40 127.0.0.1 unknown unknown 7->40 26 C:\Program Files (x86)\...\dhcpmon.exe, PE32 7->26 dropped 28 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 7->28 dropped 30 C:\Users\user\AppData\Local\...\tmp1F67.tmp, XML 7->30 dropped 32 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 7->32 dropped 50 Detected unpacking (changes PE section rights) 7->50 52 Detected unpacking (overwrites its own PE header) 7->52 54 Protects its processes via BreakOnTermination flag 7->54 56 Hides that the sample has been downloaded from the Internet (zone.identifier) 7->56 18 schtasks.exe 1 7->18         started        20 schtasks.exe 1 7->20         started        34 C:\Users\user\AppData\...\bn6KKSGuHJ.exe.log, ASCII 12->34 dropped 58 Hides threads from debuggers 12->58 36 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 14->36 dropped file5 signatures6 process7 process8 22 conhost.exe 18->22         started        24 conhost.exe 20->24         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-02-20 16:20:59 UTC
AV detection:
31 of 47 (65.96%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i5zypb64be3x5y2rprtjkdq2nsjra7lruwi4ton5yt4rluj2pr2q._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
6685e3e49db6b1cdd7d3c631d5909d61422e23b3972c14d45bf9b09cce0da437
NanoCore
b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda
NanoCore
da6e9bd269fbd3904c007d8c19272f372211b3930567d21b977d34716317143a
NanoCore
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210228-xkgw1clgnn/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Checks whether UAC is enabled
NanoCore
Unpacked files
SH256 hash:
47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75
MD5 hash:
4a1d27ee33ad84f138c762a198333ffc
SHA1 hash:
ea54931448d1b9b343e2d676504f8d353b56ae46
Link:
https://www.unpac.me/results/b712ce7f-c836-4c22-a783-aebccfa073e5/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75

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:ach_NanoCore
Create hunting rule
Author:abuse.ch
Rule name:EnigmaStub
Create hunting rule
Author:@bartblaze
Description:Identifies Enigma packer stub.
Rule name:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:win_nanocore_w0
Create hunting rule
Author: Kevin Breen <kevin@techanarchy.net>
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

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/119951/

Comments