MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718. 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: 14


Intelligence 14 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718
SHA3-384 hash: 5ffd6eb8ac48d012eb3bc3072a694865e64c62d7748c53df6fab031afbab5004fb6c93167ba0aeae9b3c88646ca4da1b
SHA1 hash: bfe3a5b530af40d4a679f3a0f271a2c8fc3bebda
MD5 hash: 5544f709f499a2179dc8bfa0febef190
humanhash: apart-high-india-kentucky
File name:INV 6821202304080001.pdf.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:2'326'528 bytes
First seen:2023-04-12 12:11:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:bBPTrfgGiX5jCqC/twlR0egPHcKkZLKbarxflAGezUFj1ttCq63a7fUL3t6NxKmn:prwX5jHOODAZzojrtCGdXr
Threatray 16 similar samples on MalwareBazaar
TLSH T19FB5BE735583FDD5EBA25AF8EC5211100CA0FCAF52ACD24C7C8839AB35B63125A4BDB5
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon f89c98d898a8d418 (7 x SnakeKeylogger, 3 x Formbook, 2 x AgentTesla)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
152.89.218.40:54984

Intelligence

File Origin
# of uploads :
1
# of downloads :
350
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
INV 6821202304080001.pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-04-12 12:14:42 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0f8e6c8f-99ea-42e5-8fae-c2e1c57c5393

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/381770/
Detection(s):
PUA.Win.Packer.Medvedev-6482674-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Creating a window
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun
Enabling autorun by creating a file
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6436a0142e9d861072d65654/reports/2b66f181-abed-43b0-ad21-c5ac40dd143b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718
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:
NanoCoreRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/521bb477-01a7-42e9-96e8-d4bab3e4baf0
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1212507
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Detected Nanocore Rat
Encrypted powershell cmdline option found
Hides that the sample has been downloaded from the Internet (zone.identifier)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Uses an obfuscated file name to hide its real file extension (double extension)
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: 845423 Sample: INV_6821202304080001.pdf.exe Startdate: 12/04/2023 Architecture: WINDOWS Score: 100 69 Snort IDS alert for network traffic 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 Multi AV Scanner detection for dropped file 2->73 75 12 other signatures 2->75 8 INV_6821202304080001.pdf.exe 1 5 2->8         started        12 dhcpmon.exe 3 2->12         started        14 INV_6821202304080001.pdf.exe 1 2->14         started        16 dhcpmon.exe 2 2->16         started        process3 file4 61 C:\Users\user\AppData\...\Titfeptt.exe, PE32 8->61 dropped 63 C:\Users\...\Titfeptt.exe:Zone.Identifier, ASCII 8->63 dropped 65 C:\Users\...\INV_6821202304080001.pdf.exe.log, ASCII 8->65 dropped 79 Creates an undocumented autostart registry key 8->79 81 Encrypted powershell cmdline option found 8->81 83 Uses schtasks.exe or at.exe to add and modify task schedules 8->83 18 INV_6821202304080001.pdf.exe 1 16 8->18         started        23 powershell.exe 16 8->23         started        85 Injects a PE file into a foreign processes 12->85 25 powershell.exe 12->25         started        27 dhcpmon.exe 12->27         started        29 powershell.exe 14->29         started        31 INV_6821202304080001.pdf.exe 14->31         started        33 powershell.exe 16->33         started        35 dhcpmon.exe 16->35         started        signatures5 process6 dnsIp7 67 152.89.218.40, 49695, 49696, 49698 DHUBRU Russian Federation 18->67 53 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->53 dropped 55 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 18->55 dropped 57 C:\Users\user\AppData\Local\...\tmp7FE1.tmp, XML 18->57 dropped 59 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->59 dropped 77 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->77 37 schtasks.exe 1 18->37         started        39 schtasks.exe 1 18->39         started        41 conhost.exe 23->41         started        43 conhost.exe 25->43         started        45 conhost.exe 29->45         started        47 conhost.exe 33->47         started        file8 signatures9 process10 process11 49 conhost.exe 37->49         started        51 conhost.exe 39->51         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718/
Threat name:
ByteCode-MSIL.Trojan.Nekark
Create hunting rule
Status:
Malicious
First seen:
2023-04-12 12:12:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ydxclhesymg424iocose5sejtksspgmkwjbr2hsmwhpjjw4ts4ma._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
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16cce7de5b4dfb6933aab0dd4388a5e9800f8811877a9087bb2964c098ad6c62
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7def901d73f04fde55e8a0058d765ca75a424cf585381d3fdd8f40cd12c99512
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aad314e684a4195a25d580e3e203b8064b275adba10f144d1bf69126b980f2c8
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NanoCore
+ 6 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230412-pc6tladf2w/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Modifies WinLogon for persistence
NanoCore
Malware Config
C2 Extraction:
152.89.218.40:54984
127.0.0.1:54984
Unpacked files
SH256 hash:
c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718
MD5 hash:
5544f709f499a2179dc8bfa0febef190
SHA1 hash:
bfe3a5b530af40d4a679f3a0f271a2c8fc3bebda
Link:
https://www.unpac.me/results/ede05c20-15c4-48d4-b594-b58ae1d46132/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c0ee259c92c3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_Nanocore_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:MALWARE_Win_NanoCore
Create hunting rule
Author:ditekSHen
Description:Detects NanoCore
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Feb18_1_RID2DF1
Create hunting rule
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Gen_2
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:Nanocore_RAT_Gen_2_RID2D96
Create hunting rule
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Nanocore_d8c4e3c5
Create hunting rule
Author:Elastic Security
Rule name:win_nanocore_w0
Create hunting rule
Author:Kevin Breen <kevin@techanarchy.net>

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/381770/

Comments