MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e8bfec50fddb83c5a16f3f1110751cf2e01b359f2f7236f7f42db0451cf12d79. 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: 8

Intelligence 8 IOCs YARA 5 File information Comments

SHA256 hash:	e8bfec50fddb83c5a16f3f1110751cf2e01b359f2f7236f7f42db0451cf12d79
SHA3-384 hash:	06d94d88b5650df85d75783b53f669b8601f8a5636d85a3635f1f9ae2c0b390b473010b1c5669dca7e21bec3f57239ab
SHA1 hash:	5479a2ed9c5c996420d6ce76b5ff7dc6d8351d33
MD5 hash:	639a630c63023a0c459842d6ff773a31
humanhash:	minnesota-johnny-sodium-muppet
File name:	RFQ-Revised P.O DETAIL PRICE PER MTR .exe
Download:	download sample
Signature	NanoCore Create hunting rule
File size:	444'416 bytes
First seen:	2020-08-14 08:40:36 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	6144:3bdgmrYrju1SRXi9cVeeb2F+gDokw/iCBNLG3/WIl3QnES4sUA+ffDjeUCnSdbun:3bdCwylAAg76/weIlgnQ5dSLL
Threatray	1'111 similar samples on MalwareBazaar
TLSH	2694E03E43F2D609C47BF23E9245A08AF1D7AC9B1494C70A699D0CE80E355E79667CF8
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-Revised P.O DETAIL PRICE PER MTR .rar (contains "RFQ-Revised P.O DETAIL PRICE PER MTR .exe")

NanoCore RAT C2:
masterwork.ydns.eu

Intelligence

File Origin

# of uploads :

# of downloads :

117

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/45635/

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/429016

Signature

.NET source code contains potential unpacker

Binary contains a suspicious time stamp

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

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

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:

n/a

Link:

https://mwdb.cert.pl/sample/e8bfec50fddb83c5a16f3f1110751cf2e01b359f2f7236f7f42db0451cf12d79/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-14 08:42:08 UTC

AV detection:

22 of 28 (78.57%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=5c76yuh53ob4lilph4ira5i46lqbwnm7f5zdn57ufwyekhhrfv4q._file

Verdict:

malicious

Label(s):

nanocorerat

NanoCore

1da9ad7dd4d68ace9a56cd237f683b6b0f25af7b28a6123b5659264fca2c7b0c

NanoCore

270f03b20754cf26fb20202bb406bb4ecec144718a0850b7e926d0f25d705829

NanoCore

374da77f56a763236c07c8313f3702534043524af5dda3b5d084e127e0c6450b

NanoCore

9c93fbc5473c25600f4a7489ab89cd46e5bacda862da1b347fad0bdcbd4df50e

NanoCore

e65672cd30a737479893bcee2e0d3842dd61e0bf882e476bdb53b00ff9a02379

NanoCore

e999e044d228cd89941da0c841fdd1a94b896a23cb35961e4a791cefe229760a

NanoCore

ea1b004cfce10e598de477d7fe8426a4eb230794e65951a19632f7fbb557355f

NanoCore

ec34c3db0d2c865486e52760c0d35dab95adcb3544f2e03f5023495d112d64ba

NanoCore

fa4be5c42a5ef8c05dc68b79b35275a896d1d107752b0fd10fd103146f938867

NanoCore

+ 1'101 additional samples on MalwareBazaar

Result

Malware family:

nanocore

Score:

10/10

Tags:

evasion trojan keylogger stealer spyware family:nanocore

Link:

https://tria.ge/reports/200814-evjjt823n2/

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:

0.87

Link:

https://yomi.yoroi.company/submissions/e8bfec50fddb83c5a16f3f1110751cf2e01b359f2f7236f7f42db0451cf12d79

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/