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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b5b9c651ba3c492a4fd59da31ead2f2a788e4ad6f4bece55fb004bbaa87ca64. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b5b9c651ba3c492a4fd59da31ead2f2a788e4ad6f4bece55fb004bbaa87ca64
SHA3-384 hash: 02cab0952e14afc75d3d6af19b4a8a4710bbd0839a6d877dc367b35edeee085fda79950b54212b6ebe6b48b90919a5e3
SHA1 hash: e6168426ac9a03e9fb466e61b8bdd19e22285263
MD5 hash: e188a602d29f49e019b6baac888385f1
humanhash: coffee-carolina-football-stairway
File name:PO_NO CU-3257743,Pdf.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:870'912 bytes
First seen:2021-06-16 05:15:24 UTC
Last seen:2021-06-16 05:45:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'242 x AgentTesla, 20'499 x Formbook, 12'374 x SnakeKeylogger)
ssdeep 12288:V5+byjZlk7CvquwaHpe0D746O1oOUMwDOLnVMxk4DacVlknf6pI3H0jQLQ7lHdb:iEquPHpeZ6OFeOz39fJka+r
Threatray 444 similar samples on MalwareBazaar
TLSH 5C05BF3036FA9148D6FE1B318DB9819403BABA273B55CF2E2449224C9D53753DB12BE7
Reporter GovCERT_CH
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO_NO CU-3257743,Pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-06-16 05:16:16 UTC
Tags:
trojan nanocore rat
Link:
https://app.any.run/tasks/a36551d8-664a-40a2-be57-97bc25c95ab6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.ArtemisE188A602D29F.28466.25532.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c6ce2c70-8d04-42e9-8817-1eee88d40441
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/802790
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 435186 Sample: PO_NO CU-3257743,Pdf.exe Startdate: 16/06/2021 Architecture: WINDOWS Score: 100 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 12 other signatures 2->46 7 PO_NO CU-3257743,Pdf.exe 7 2->7         started        process3 file4 30 C:\Users\user\AppData\...\WqTCprbPWHb.exe, PE32 7->30 dropped 32 C:\Users\user\AppData\Local\...\tmp36B4.tmp, XML 7->32 dropped 34 C:\Users\...\PO_NO CU-3257743,Pdf.exe.log, ASCII 7->34 dropped 48 Adds a directory exclusion to Windows Defender 7->48 11 PO_NO CU-3257743,Pdf.exe 7->11         started        16 powershell.exe 24 7->16         started        18 powershell.exe 23 7->18         started        20 3 other processes 7->20 signatures5 process6 dnsIp7 38 45.137.22.60, 4023, 49711, 49718 ROOTLAYERNETNL Netherlands 11->38 36 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 11->36 dropped 50 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->50 22 conhost.exe 16->22         started        24 conhost.exe 18->24         started        26 conhost.exe 20->26         started        28 conhost.exe 20->28         started        file8 signatures9 process10
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6b5b9c651ba3c492a4fd59da31ead2f2a788e4ad6f4bece55fb004bbaa87ca64/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2021-06-16 02:04:23 UTC
AV detection:
5 of 46 (10.87%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nnnzyzi3upcjfjh5lhndd2ws6ktyrzfnn5f6zzk7waclxkuhzjsa._file
Verdict:
unknown
Similar samples:
0ed96cf4589be7b6b9b9562a165f4587ecf61e70a4958fb524f75c8b7c0b3fc9
NanoCore
0ff8a0051138905969d6c762ab6bfb707348312de90884d4647c4168a501edbc
NanoCore
4ede93704fe2c1189b94f751273bceb736bf383055f282c074bc7650c80ada0e
NanoCore
6d38e557e684a8e59acb2767457a4bf54ab1942e7edb4438cf14ec74e765d11b
NanoCore
7797da9505bd2ab985d9b1233977b6b11ab9f0e8da31a47b44e0af23c94af807
NanoCore
87af4b4ad9b0ae7a123dcf680c8e5727ed67814a46cfe38eca3fe771daafe112
NanoCore
9d50ad601d3bd5e08d0a7aac1e09dba43330a03ec7c6e253a9afb0eb1138afd0
NanoCore
a41966a9de20c3f4a04ee7f940a3cc8fb4578304a4f1f20c3559aba3df3b5e0f
NanoCore
b3eea3acbb129b3be2fe22a3c4b4cff9663939b9783f41a9931aecdfb318dd7c
NanoCore
e9939c063f5c1cbbaa6401386a2f59c8e4f2d5d4fbb73f73f8b7182d7111c234
NanoCore
+ 434 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210616-sv43g75rge/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
45.137.22.60:4023
127.0.0.1:4023
Unpacked files
SH256 hash:
82fe42ffa7c2160c4ba79b666ba52f6dce210e0be5cbbb1419ddf3058215568b
MD5 hash:
a7c717e07a9e8fc3408914687859cf8a
SHA1 hash:
862f0e3f4f99c7674a540327ba08792e8a6cf5a1
Link:
https://www.unpac.me/results/3d9a64c4-7434-4a17-92a2-ded1c67ee9a5/
SH256 hash:
6b5b9c651ba3c492a4fd59da31ead2f2a788e4ad6f4bece55fb004bbaa87ca64
MD5 hash:
e188a602d29f49e019b6baac888385f1
SHA1 hash:
e6168426ac9a03e9fb466e61b8bdd19e22285263
Link:
https://www.unpac.me/results/3d9a64c4-7434-4a17-92a2-ded1c67ee9a5/
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/6b5b9c651ba3c492a4fd59da31ead2f2a788e4ad6f4bece55fb004bbaa87ca64

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

NanoCore

Executable exe 6b5b9c651ba3c492a4fd59da31ead2f2a788e4ad6f4bece55fb004bbaa87ca64

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments