MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b1c50125619e8c98ba3f33ba6458aa8227d26a17cb0cf7c58bf2653f1662078. 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: 6


Intelligence 6 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b1c50125619e8c98ba3f33ba6458aa8227d26a17cb0cf7c58bf2653f1662078
SHA3-384 hash: b98834e366dd0c0b5868ddf921535361faf79dae1d2fb7db10c767cc5df9801f6358029eafa8a5e4255e3ac5c0b5d686
SHA1 hash: 319f23daa8fbed1f161bd6eac95bfe2327571f57
MD5 hash: 49123a60cbf2222d349c3ac768f36da1
humanhash: hawaii-carolina-oregon-high
File name:Order.xls
Download: download sample
Signature NanoCore
Create hunting rule
File size:431'616 bytes
First seen:2020-07-31 07:07:57 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:DVr4QfyunypAwuPYxPNDVC0vOUHvHy7wa:DVrPDIACxPNDVXvLPm
TLSH 0494127BB3D5AF8BC9A357794C42C7D22313FE993792A66B7558F6080B37358C022912
Reporter abuse_ch
Tags:NanoCore xls


Avatar
abuse_ch
NanoCore payload URL:
http://185.172.110.217/virp/ORDER0001.exe

NanoCore RAT C2s:
elley.awsmppl.com
dora21.duckdns.org

Intelligence

File Origin
# of uploads :
1
# of downloads :
76
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.FormbookClamAVTrivaMurderParty.20200731.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Launching a process
Creating a process with a hidden window
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/404631
Signature
.NET source code contains potential unpacker
Detected Nanocore Rat
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Program Location Process Starts
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 254545 Sample: Order.xls Startdate: 31/07/2020 Architecture: WINDOWS Score: 100 41 g.msn.com 2->41 43 elley.awsmppl.com 2->43 45 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->45 55 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Sigma detected: Scheduled temp file as task from temp location 2->59 61 19 other signatures 2->61 9 EXCEL.EXE 26 38 2->9         started        signatures3 process4 dnsIp5 51 185.172.110.217, 49723, 80 BLADESERVERSNL Netherlands 9->51 53 192.168.2.1 unknown unknown 9->53 33 C:\Users\user\AppData\...\ORDER0001[1].exe, PE32 9->33 dropped 35 C:\Users\Public\svchost32.exe, PE32 9->35 dropped 65 Document exploit detected (creates forbidden files) 9->65 67 Document exploit detected (process start blacklist hit) 9->67 14 svchost32.exe 6 9->14         started        18 splwow64.exe 9->18         started        file6 signatures7 process8 file9 37 C:\Users\user\AppData\...\&startupname&.exe, PE32 14->37 dropped 39 C:\Users\user\AppData\Local\...\tmpE354.tmp, XML 14->39 dropped 69 Machine Learning detection for dropped file 14->69 71 Injects a PE file into a foreign processes 14->71 20 svchost32.exe 8 14->20         started        25 schtasks.exe 1 14->25         started        27 svchost32.exe 14->27         started        signatures10 process11 dnsIp12 47 elley.awsmppl.com 185.244.30.57, 49731, 49733, 49734 DAVID_CRAIGGG Netherlands 20->47 49 dora21.duckdns.org 20->49 31 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 20->31 dropped 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->63 29 conhost.exe 25->29         started        file13 signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b1c50125619e8c98ba3f33ba6458aa8227d26a17cb0cf7c58bf2653f1662078/
Threat name:
Script-Macro.Downloader.Obfuser
Create hunting rule
Status:
Malicious
First seen:
2020-07-31 07:09:06 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nmofaeswdhumtc5d6m52mrmkvarh2jvbpsym67cyx4tfh4lgeb4a._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200731-9m5pt2xehn/
Behaviour
Suspicious Office macro
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6b1c50125619e8c98ba3f33ba6458aa8227d26a17cb0cf7c58bf2653f1662078

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:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
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:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
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

Excel file xls 6b1c50125619e8c98ba3f33ba6458aa8227d26a17cb0cf7c58bf2653f1662078

(this sample)

NanoCore

Executable exe 2bc8ab981b57a028207d7c3541c80dd72f2c84e36483c62b547c32d43b28ef28

  
URLhaus
https://urlhaus.abuse.ch/url/422578/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 2bc8ab981b57a028207d7c3541c80dd72f2c84e36483c62b547c32d43b28ef28
  
Dropping
MD5 b5b3d64fca9a3604c0a2b0271e9f0735

Comments