MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a0ebcb3078763eb8acca534831ef9ca1a213347328698aa3cda7c5bd23cd81d8. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a0ebcb3078763eb8acca534831ef9ca1a213347328698aa3cda7c5bd23cd81d8
SHA3-384 hash: ad0fca50f6ecaa3ee7cd215eaec0eec29c7a2056bd8c61864149ace47973fe4e9c5989958aea958007487eddbc1a3d73
SHA1 hash: e463d219a1d4dbde375e4f53c2fc250d6ee9d7f1
MD5 hash: a656f522f604872e02daee9dbc458d9c
humanhash: east-north-north-orange
File name:CN-Invoice-XXXXX9808-19011143287990.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:206'848 bytes
First seen:2021-02-22 06:39:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 1536:OQEpTCImp9zO6/XSTwtPo55rKrFUcDOC53bzf01l:OQJta6/XQIFNMl
Threatray 1'621 similar samples on MalwareBazaar
TLSH FC147403A82D99B2EF38A33E40050DC991F51D9C55C9B22A4BB8BD3DD93D4625D1FE2E
Reporter abuse_ch
Tags:exe FedEx NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: [192.188.88.227]
Sending IP: 192.188.88.227
From: FedEx Express - Do Not Reply <Carrie.Park@expeditors.com>
Reply-To: nopeply-fedeoxngr@iname.com
Subject: [CN]: FedEx Invoice 账单 (CustomerAccount -XXXXX9808-19011143287990)
Attachment: CN-Invoice-XXXXX9808-19011143287990.iso (contains "CN-Invoice-XXXXX9808-19011143287990.exe")

NanoCore RAT C2:
nanopc.linkpc.net:50005

Intelligence

File Origin
# of uploads :
1
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Detection:
DLAgent06
Create hunting rule
Link:
https://www.capesandbox.com/analysis/118186/
Detection(s):
Win.Malware.Noon-9829285-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Creating a file
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Launching a service
Deleting a recently created file
Running batch commands
Sending a UDP request
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Setting a single autorun event
Forced shutdown of a system process
Connection attempt to an infection source
Adding exclusions to Windows Defender
Unauthorized injection to a system process
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.
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/613662
Signature
Adds a directory exclusion to Windows Defender
Binary contains a suspicious time stamp
Changes security center settings (notifications, updates, antivirus, firewall)
Contains functionality to hide a thread from the debugger
Detected Nanocore Rat
Drops PE files with benign system names
Executable has a suspicious name (potential lure to open the executable)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
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: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: NanoCore
Sigma detected: Suspicious Program Location Process Starts
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Tries to delay execution (extensive OutputDebugStringW loop)
Writes to foreign memory regions
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 355838 Sample: CN-Invoice-XXXXX9808-190111... Startdate: 22/02/2021 Architecture: WINDOWS Score: 100 79 Malicious sample detected (through community Yara rule) 2->79 81 Multi AV Scanner detection for submitted file 2->81 83 Sigma detected: NanoCore 2->83 85 12 other signatures 2->85 8 CN-Invoice-XXXXX9808-19011143287990.exe 23 9 2->8         started        13 explorer.exe 2->13         started        15 explorer.exe 2->15         started        17 11 other processes 2->17 process3 dnsIp4 75 coroloboxorozor.com 104.21.71.230, 49715, 49723, 49726 CLOUDFLARENETUS United States 8->75 59 C:\Users\Public\Documents\...\svchost.exe, PE32 8->59 dropped 61 C:\Users\...\svchost.exe:Zone.Identifier, ASCII 8->61 dropped 63 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 8->63 dropped 103 Writes to foreign memory regions 8->103 105 Adds a directory exclusion to Windows Defender 8->105 107 Hides threads from debuggers 8->107 111 3 other signatures 8->111 19 CasPol.exe 8->19         started        24 AdvancedRun.exe 1 8->24         started        26 cmd.exe 8->26         started        34 3 other processes 8->34 28 svchost.exe 13->28         started        30 svchost.exe 15->30         started        77 127.0.0.1 unknown unknown 17->77 109 Changes security center settings (notifications, updates, antivirus, firewall) 17->109 32 WerFault.exe 17->32         started        file5 signatures6 process7 dnsIp8 65 nanopc.linkpc.net 185.192.70.170, 50005 UKSERVERS-ASUKDedicatedServersHostingandCo-Location Netherlands 19->65 67 185.157.161.86, 49739, 50005 OBE-EUROPEObenetworkEuropeSE Sweden 19->67 53 C:\Users\user\AppData\Roaming\...\run.dat, data 19->53 dropped 87 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->87 36 AdvancedRun.exe 24->36         started        39 conhost.exe 26->39         started        41 timeout.exe 26->41         started        69 coroloboxorozor.com 28->69 55 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 28->55 dropped 89 Multi AV Scanner detection for dropped file 28->89 91 Machine Learning detection for dropped file 28->91 93 Adds a directory exclusion to Windows Defender 28->93 95 Tries to delay execution (extensive OutputDebugStringW loop) 28->95 43 powershell.exe 28->43         started        45 AdvancedRun.exe 28->45         started        71 coroloboxorozor.com 30->71 57 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 30->57 dropped 97 System process connects to network (likely due to code injection or exploit) 30->97 99 Hides threads from debuggers 30->99 101 Injects a PE file into a foreign processes 30->101 47 conhost.exe 34->47         started        49 conhost.exe 34->49         started        file9 signatures10 process11 dnsIp12 73 192.168.2.1 unknown unknown 36->73 51 conhost.exe 43->51         started        process13
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a0ebcb3078763eb8acca534831ef9ca1a213347328698aa3cda7c5bd23cd81d8/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2021-02-22 05:31:18 UTC
AV detection:
12 of 47 (25.53%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=udv4wmdyoy7lrlgkknedd344ugrbgndtfbuyvi6nu7c32i6nqhma._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a
NanoCore
258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a
NanoCore
2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d
NanoCore
4f0035201ba7a3a536727862b8ac8dbf389038c5af1674ff7a982190fed1e30b
NanoCore
644a0403a3c8254a3846b8c07aa7fdeb2cfe21aa5630ca3100949869f60ae407
NanoCore
6a4ecef563225ed9892ff403374d704be5e3b4242ae9f08d624325e83fd22276
NanoCore
db591a08743176655e567ddffcbbd79b9e2e31feadc1feb54a0200296a93d53d
NanoCore
e26e07749118e8284c28e50553c62bdbe327234b801ffdf2eedb8663444aa459
NanoCore
f3ac633354efc183e1705dd9e042d39b62208735f6f9e83534fb21c9f32b5d70
NanoCore
f4bf592fde78af7ed0b06166ac8265d7b65a2457b9a61f12c2e3a4fad641ac19
NanoCore
+ 1'611 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/210222-6ljcjx2l3e/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Windows security modification
Executes dropped EXE
Nirsoft
Modifies Windows Defender Real-time Protection settings
NanoCore
Turns off Windows Defender SpyNet reporting
Windows security bypass
Malware Config
C2 Extraction:
nanopc.linkpc.net:50005
185.157.161.86:50005
Unpacked files
SH256 hash:
a0ebcb3078763eb8acca534831ef9ca1a213347328698aa3cda7c5bd23cd81d8
MD5 hash:
a656f522f604872e02daee9dbc458d9c
SHA1 hash:
e463d219a1d4dbde375e4f53c2fc250d6ee9d7f1
Link:
https://www.unpac.me/results/c9c839fd-e40b-4a70-8bd2-3dde3ca27fb6/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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:Nanocore_RAT_Feb18_1
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
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
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.

Malspam

NanoCore

iso 9f3235ca0410808f8c3ecc87ec26358a128e56eac6fe1742331d8f101e2cc1e3

NanoCore

Executable exe a0ebcb3078763eb8acca534831ef9ca1a213347328698aa3cda7c5bd23cd81d8

(this sample)

  
Dropped by
MD5 edc61ffd8755628afdc07b58d7f8e6e5
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 9f3235ca0410808f8c3ecc87ec26358a128e56eac6fe1742331d8f101e2cc1e3
Cape
Cape
https://www.capesandbox.com/analysis/118186/

Comments