MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6f135861ec43d793a4951f05009c146c70849534bd8486fa42be291b9820650d. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6f135861ec43d793a4951f05009c146c70849534bd8486fa42be291b9820650d
SHA3-384 hash: 24fee854fae9e26444d17b93d9d517375cc023b0edee9156bea3480eee5c6edd32fff5b10a375678c27ce0f71f088b77
SHA1 hash: f03df8488aa92661c271d1824647af3889ebd516
MD5 hash: aaa0b7d3f2fdc741d25bef59e20be8a6
humanhash: pennsylvania-south-bacon-california
File name:INVOICE.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:810'496 bytes
First seen:2020-08-20 06:26:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:fnzVhuRX/cG+1B/gazP7aM0LxKV1EQESRa5Pt:fnzVhOVa/0LYR
Threatray 1'077 similar samples on MalwareBazaar
TLSH 96056C5B3240DE03C4EA28F1DC10EB789207AEAC623797A774C179D9B5F75EA09293C5
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: webmail.misiones.gov.ar
Sending IP: 138.117.77.140
From: privadatransportes@misiones.gov.ar
Subject: NEW ORDER 31825504
Attachment: INVOICE.rar (contains "INVOICE.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
160
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/49011/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/440601
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected Nanocore Rat
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
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 272907 Sample: INVOICE.exe Startdate: 21/08/2020 Architecture: WINDOWS Score: 100 53 Malicious sample detected (through community Yara rule) 2->53 55 Sigma detected: Scheduled temp file as task from temp location 2->55 57 Sigma detected: NanoCore 2->57 59 7 other signatures 2->59 8 INVOICE.exe 7 2->8         started        12 RegSvcs.exe 4 2->12         started        14 dhcpmon.exe 4 2->14         started        16 dhcpmon.exe 3 2->16         started        process3 file4 47 C:\Users\user\AppData\Local\...\tmpDE9C.tmp, XML 8->47 dropped 49 C:\Users\user\AppData\Roaming\acedKQ.exe, PE32 8->49 dropped 63 Writes to foreign memory regions 8->63 65 Allocates memory in foreign processes 8->65 67 Injects a PE file into a foreign processes 8->67 18 RegSvcs.exe 1 13 8->18         started        23 schtasks.exe 1 8->23         started        25 RegSvcs.exe 8->25         started        27 conhost.exe 12->27         started        29 conhost.exe 14->29         started        31 conhost.exe 16->31         started        signatures5 process6 dnsIp7 51 185.140.53.204, 1604, 49737, 49740 DAVID_CRAIGGG Sweden 18->51 43 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 18->43 dropped 45 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->45 dropped 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->61 33 schtasks.exe 1 18->33         started        35 schtasks.exe 1 18->35         started        37 conhost.exe 23->37         started        file8 signatures9 process10 process11 39 conhost.exe 33->39         started        41 conhost.exe 35->41         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6f135861ec43d793a4951f05009c146c70849534bd8486fa42be291b9820650d/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-20 06:28:07 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=n4jvqypmiplzhjevd4cqbhaunryijfjuxwcin6scxyurxgbamugq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
194537d76b5270112c3d5faf6a1aa1aedf9c665602b5083895de781f935b4289
NanoCore
20ec6cdb323f2e2eea0bfb107e820a079a41a3fc6afdf8378de930d7aa7b4160
NanoCore
330cc7a94a8d40b4588313605d103e425e9a2530bf19e32b6cd61a786a6b8c04
NanoCore
3b30014966f8a84eef44e2830ddb7ef0c901d836579882d43fb453189695286e
NanoCore
4e7bca2dd3a61213bdc031709099133300e2dbaf3d5ba79b63e12daa54225367
NanoCore
533a4b6ec0f899f90bb045308e83b70d18c25f040b376a7ec3df9248b3e78136
NanoCore
5f3bcede844e8174892b51124aa52ebd39f98514afc9773120adf4b4735d09d6
NanoCore
a3f63baeb3cde3c99045e327f4d993d7bb27767fe68a66bad85a4b292ef906a5
NanoCore
a91efeb1f863ea7e0426d1a5a70ff0398848acc4ab445198091b4e5c629e77cb
NanoCore
df819c47c4ce10e629e5e6df48e4baa642b5a9b44d1c60c5597399ae7c859461
NanoCore
+ 1'067 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
persistence keylogger trojan stealer spyware family:nanocore
Link:
https://tria.ge/reports/200820-cqp7erglmx/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
NanoCore
Malware Config
C2 Extraction:
185.140.53.204:1604
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/6f135861ec43d793a4951f05009c146c70849534bd8486fa42be291b9820650d

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.

ef2602f4235327b435c1cf2c477c1238

NanoCore

Executable exe 6f135861ec43d793a4951f05009c146c70849534bd8486fa42be291b9820650d

(this sample)

  
Dropped by
MD5 ef2602f4235327b435c1cf2c477c1238
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/49011/

Comments