MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d524cd860456f8ba974792e116c29500bd251b580d42df1d115ffe96b5f79d43. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d524cd860456f8ba974792e116c29500bd251b580d42df1d115ffe96b5f79d43
SHA3-384 hash: 5748c4d27707777e561b3e3cf8f234817e0cce98669727d91b7ba6197fab1cfcb6d7f9dce93c6b860e721fc550d55c44
SHA1 hash: f52f43ce3860a95692bd0834f11b0f78e15caf6a
MD5 hash: e2f1ee574b30131af7f27069420a9887
humanhash: oxygen-twelve-green-robert
File name:CN-Invoice-XXXXX9808-19011143287993.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:19'672 bytes
First seen:2021-02-24 07:04:29 UTC
Last seen:2021-02-24 09:04:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:I6i/ke7p6vewAMgs94UCJu6rGigeQRbspj5Dg0MoTht1:3i8/Ats9vQKeespj5DgiThL
Threatray 1'654 similar samples on MalwareBazaar
TLSH 75925C67AF7A1C02F4BB66332D93C74597B8B7B1E631CA37788852140693700A65CF3A
Reporter abuse_ch
Tags:exe FedEx NanoCore


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: [45.15.143.231]
Sending IP: 45.15.143.231
From: FedEx Express - Do Not Reply <Carrie.Park@expeditors.com>
Reply-To: nopeply-fedeoxngr@iname.com
Subject: [CN]: FedEx Invoice 账单 (CustomerAccount -XXXXX9808-19011143287993)
Attachment: CN-Invoice-XXXXX9808-19011143287993.iso (contains "CN-Invoice-XXXXX9808-19011143287993.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
136
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CN-Invoice-XXXXX9808-19011143287993.exe
Verdict:
Malicious activity
Analysis date:
2021-02-24 07:27:03 UTC
Tags:
trojan rat nanocore
Link:
https://app.any.run/tasks/d9422965-384c-4bfc-bef2-b04695778505

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/118867/
Detection(s):
SecuriteInfo.com.Trojan.Siggen12.6691.32010.7630.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a UDP request
Launching a process
Creating a process with a hidden window
Creating a file in the Windows subdirectories
Creating a window
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
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
Setting a single autorun event
Sending a TCP request to an infection source
Sending an HTTP GET request 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/616250
Signature
Adds a directory exclusion to Windows Defender
Binary contains a suspicious time stamp
Creates an autostart registry key pointing to binary in C:\Windows
Detected Nanocore Rat
Drops executables to the windows directory (C:\Windows) and starts them
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 357132 Sample: CN-Invoice-XXXXX9808-190111... Startdate: 24/02/2021 Architecture: WINDOWS Score: 100 71 Multi AV Scanner detection for domain / URL 2->71 73 Malicious sample detected (through community Yara rule) 2->73 75 Multi AV Scanner detection for submitted file 2->75 77 9 other signatures 2->77 7 CN-Invoice-XXXXX9808-19011143287993.exe 23 9 2->7         started        12 explorer.exe 2->12         started        14 explorer.exe 2->14         started        16 9 other processes 2->16 process3 dnsIp4 65 coroloboxorozor.com 104.21.71.230, 49712, 49717, 80 CLOUDFLARENETUS United States 7->65 67 192.168.2.1 unknown unknown 7->67 51 C:\Windows\Resources\Themes\...\svchost.exe, PE32 7->51 dropped 53 C:\Windows\...\svchost.exe:Zone.Identifier, ASCII 7->53 dropped 55 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 7->55 dropped 87 Creates an autostart registry key pointing to binary in C:\Windows 7->87 89 Adds a directory exclusion to Windows Defender 7->89 91 Hides threads from debuggers 7->91 93 Drops PE files with benign system names 7->93 18 CasPol.exe 7->18         started        23 cmd.exe 7->23         started        25 powershell.exe 26 7->25         started        33 3 other processes 7->33 95 Drops executables to the windows directory (C:\Windows) and starts them 12->95 27 svchost.exe 12->27         started        29 svchost.exe 14->29         started        69 127.0.0.1 unknown unknown 16->69 31 WerFault.exe 16->31         started        file5 signatures6 process7 dnsIp8 57 nanopc.linkpc.net 185.157.161.86, 49724, 50005 OBE-EUROPEObenetworkEuropeSE Sweden 18->57 47 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 18->47 dropped 79 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->79 35 conhost.exe 23->35         started        37 timeout.exe 23->37         started        39 conhost.exe 25->39         started        59 172.67.172.17, 49723, 80 CLOUDFLARENETUS United States 27->59 61 coroloboxorozor.com 27->61 49 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 27->49 dropped 81 System process connects to network (likely due to code injection or exploit) 27->81 83 Adds a directory exclusion to Windows Defender 27->83 41 powershell.exe 27->41         started        63 coroloboxorozor.com 29->63 85 Multi AV Scanner detection for dropped file 29->85 43 AdvancedRun.exe 33->43         started        45 conhost.exe 33->45         started        file9 signatures10 process11
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d524cd860456f8ba974792e116c29500bd251b580d42df1d115ffe96b5f79d43/
Threat name:
ByteCode-MSIL.Downloader.BaseLoader
Create hunting rule
Status:
Malicious
First seen:
2021-02-24 07:05:30 UTC
AV detection:
12 of 47 (25.53%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2usm3bqek34lvf2hslqrnquvac6skg2ybvbn6hirl77jnnpxtvbq._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
+ 1'644 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/210224-z6zms6vl9s/
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:
d524cd860456f8ba974792e116c29500bd251b580d42df1d115ffe96b5f79d43
MD5 hash:
e2f1ee574b30131af7f27069420a9887
SHA1 hash:
f52f43ce3860a95692bd0834f11b0f78e15caf6a
Link:
https://www.unpac.me/results/f9625a61-a1a3-4ba2-ba84-7271f0b90909/
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: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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

NanoCore

iso 975255df4b1b3ce22cd9a67ee859538e8a07e23bc4bfa40369914dd767500bff

NanoCore

Executable exe d524cd860456f8ba974792e116c29500bd251b580d42df1d115ffe96b5f79d43

(this sample)

  
Dropped by
MD5 5db6d6263814a57df6fe7cd550680229
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 975255df4b1b3ce22cd9a67ee859538e8a07e23bc4bfa40369914dd767500bff
Cape
Cape
https://www.capesandbox.com/analysis/118867/

Comments