MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a5a50f2ed013719d08a9eb60588a626aa6e0e58762ce7721dfbdc56e968c63c. 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

SHA256 hash:	1a5a50f2ed013719d08a9eb60588a626aa6e0e58762ce7721dfbdc56e968c63c
SHA3-384 hash:	f8142cbe4af49a2d1c00f11a2dc80d3bacd907b006f50b5f6bf9fff6c6b2d1bd89383c6d5048a5b071200e41a1beb2df
SHA1 hash:	1843f9ff9786732c2b7b50864f848124c1d95e34
MD5 hash:	5ef25cdfe80cee4665368d6465f4d73f
humanhash:	cardinal-magazine-high-blossom
File name:	RFQ-P.O DETAIL PRICE PER MTR .exe
Download:	download sample
Signature	NanoCore Create hunting rule
File size:	573'440 bytes
First seen:	2020-08-13 06:36:23 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	12288:x4rK+djF+j4VBC6uRBsRnYEF01RWyLVX4YTc2Z3o5FY60qaxQg:mjIYNuTs2SqLVX9TQg6L
Threatray	1'064 similar samples on MalwareBazaar
TLSH	B5C4F17037EAAA50C36D0EB1556310806B7A351BBF69C70E2D8932ED1879B797381F4B
Reporter	abuse_ch
Tags:	exe NanoCore RAT

abuse_ch

Malspam distributing NanoCore:

HELO: gmail.com
Sending IP: 81.171.9.143
From: Ramya <chomi0605@panpacific.co.kr>
Reply-To: Ramya <surnit9041@gmail.com>
Subject: RFQ-P.O DETAIL PRICE PER MTR
Attachment: RFQ-P.O DETAIL PRICE PER MTR .rar (contains "RFQ-P.O DETAIL PRICE PER MTR .exe")

Intelligence

File Origin

# of uploads :

# of downloads :

117

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/44871/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

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

Unauthorized injection to a recently created process

Creating a file

Creating a file in the %AppData% subdirectories

DNS request

Connection attempt to an infection source

Enabling autorun by creating a file

Result

Threat name:

Nanocore

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/425217

Signature

.NET source code contains potential unpacker

Detected Nanocore Rat

Found malware configuration

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

Machine Learning detection for sample

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

Yara detected AntiVM_3

Yara detected Nanocore RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

nanocore

Link:

https://mwdb.cert.pl/sample/1a5a50f2ed013719d08a9eb60588a626aa6e0e58762ce7721dfbdc56e968c63c/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-13 06:38:07 UTC

AV detection:

25 of 29 (86.21%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=djnfb4xnae3rtuekt23alcfge2vg4dsyoywoo4q57pofn2liyy6a._file

Verdict:

malicious

Label(s):

nanocorerat

NanoCore

3425b3af968c358eb243c6a14a34e3019b9fac1261a3ceab452392e606189205

NanoCore

38814f6587d098be00d461dae2dfeb01b50e2a697d86bfc02e334024133bfed8

NanoCore

88ae38556e157d0f34780d0764240a8f5be7c503b4c4c173403cd2be59cd2916

NanoCore

a032cd20c067b83f1cab391af7671f7ae669de96dbf995f08580b14d218aeccc

NanoCore

d8021d01301e057b4f51017952545673b0892e07d5546745fc1159d740716fbf

NanoCore

e33ef485c574d639eae34cd252d97aa78c17718190c98a92f7b6dc5a5fc0cd69

NanoCore

e7fa1cf008969a70a894b2947737b69c26abb63378d9d4305b698b223793029f

NanoCore

e8bfec50fddb83c5a16f3f1110751cf2e01b359f2f7236f7f42db0451cf12d79

NanoCore

ed6ea055c622adab41b5eba73b4d556c4c843b9e77e21933297ca0ce972ce5c4

NanoCore

+ 1'054 additional samples on MalwareBazaar

Result

Malware family:

nanocore

Score:

10/10

Tags:

keylogger trojan stealer spyware family:nanocore evasion

Link:

https://tria.ge/reports/200813-3pyqzhs41j/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Checks whether UAC is enabled

NanoCore

Malware Config

C2 Extraction:

masterwork.ydns.eu:2310

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/1a5a50f2ed013719d08a9eb60588a626aa6e0e58762ce7721dfbdc56e968c63c

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/