MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23fb5bf57b70184335261dec8c9bd0976ef8c61d843486ffdc5692aa9618e58e. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 23fb5bf57b70184335261dec8c9bd0976ef8c61d843486ffdc5692aa9618e58e
SHA3-384 hash: afffac75ed33f26a1d174926426b2f79bfbc4e193610a37d6fbe047aa5d5b25f1f71ed3a9d393e505508432160cd035a
SHA1 hash: 336a4ce1a5f02ffe3c94cd40139704d29e08b3a4
MD5 hash: 8cdd6012909afe7e89144c6efaeeaf97
humanhash: chicken-potato-mars-grey
File name:INVOICE DMJ009844.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:839'168 bytes
First seen:2020-07-22 10:09:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:OWalptwbMmUxnpXN5kitOV7tSDVyPzmtY7p5AwJJPmSAQdP:OJwbMTnpd5kayPytY7vDrPO
Threatray 1'579 similar samples on MalwareBazaar
TLSH DE050540EBB085F6C35B5A35D57829008A24AEF677EED7461AC8FD9A386271C3743E13
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: kashanu.ac.ir
Sending IP: 156.96.119.58
From: salavati@kashanu.ac.ir
Reply-To: salavati@kashanu.ac.ir
Subject: ACCOUNT STATEMENT/ DUE PAYMENTS FOR MONTH OF MAY , JUNE AND JULY 8TH
Attachment: SOA _INVOICES 00998699 DMJ.7z (contains "INVOICE DMJ009844.exe")

NanoCore RAT C2:
absalaad.duckdns.org:4080 (156.96.119.58)

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Nanocore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/31078/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Creating a file in the %AppData% subdirectories
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Forced shutdown of a system process
Enabling autorun with Startup directory
Unauthorized injection to a system process
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/394907
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 249852 Sample: INVOICE DMJ009844.exe Startdate: 23/07/2020 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for dropped file 2->40 42 Sigma detected: Scheduled temp file as task from temp location 2->42 44 8 other signatures 2->44 8 INVOICE DMJ009844.exe 13 2->8         started        11 MSBuild.exe 4 2->11         started        process3 file4 28 C:\Users\user\AppData\Roaming\bxAGCLniW.exe, PE32 8->28 dropped 30 C:\Users\user\AppData\Local\...\tmpAABF.tmp, XML 8->30 dropped 32 C:\Users\user\...\INVOICE DMJ009844.exe.log, ASCII 8->32 dropped 13 MSBuild.exe 10 8->13         started        18 schtasks.exe 1 8->18         started        20 conhost.exe 11->20         started        process5 dnsIp6 36 absalaad.duckdns.org 156.96.119.58, 4080 VDI-NETWORKUS United States 13->36 34 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 13->34 dropped 46 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->46 22 schtasks.exe 1 13->22         started        24 conhost.exe 18->24         started        file7 signatures8 process9 process10 26 conhost.exe 22->26         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/23fb5bf57b70184335261dec8c9bd0976ef8c61d843486ffdc5692aa9618e58e/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-22 10:11:07 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ep5vx5l3oamegnjgdxwizg6qs5xprrq5qq2in764k2jkvfqy4wha._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'569 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
evasion trojan keylogger stealer spyware family:nanocore
Link:
https://tria.ge/reports/200722-qn2nhebd62/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Creates scheduled task(s)
Suspicious use of SetThreadContext
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
absalaad.duckdns.org:4080
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Unknown
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/23fb5bf57b70184335261dec8c9bd0976ef8c61d843486ffdc5692aa9618e58e

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: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

7z 2f91d5dd58e61c7286c12a15e43f54900a385b9fc1297eccc7ec62f3ab5087b1

NanoCore

Executable exe 23fb5bf57b70184335261dec8c9bd0976ef8c61d843486ffdc5692aa9618e58e

(this sample)

  
Dropped by
MD5 4bc7a540f11955bc0178c9ca87494f08
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2f91d5dd58e61c7286c12a15e43f54900a385b9fc1297eccc7ec62f3ab5087b1
Cape
Cape
https://www.capesandbox.com/analysis/31078/

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