MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fe72699119a25e2d936a92d07abce418b9a0b91d742de5e21b005ffa82bba2b. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4fe72699119a25e2d936a92d07abce418b9a0b91d742de5e21b005ffa82bba2b
SHA3-384 hash: 72d1a8a005a70087ef8e07979bee4b1b6f211eccf4d6cb1aec6843ce423e9ce8af287fa63a523067473dd8dceb944cc6
SHA1 hash: ed8d63bccc174e25e1fc2387d1fa3a5727d31e0d
MD5 hash: c4d40c5a943aa69ffc8b4b10877e895c
humanhash: hawaii-fix-north-lima
File name:eQUEh2i4S3cEHe9.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:753'152 bytes
First seen:2020-08-28 06:31:11 UTC
Last seen:2021-03-12 15:21:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:Qe+gn2/YaUct5Whgmt5EjewkikxR7px4hW+0EcC:/+YWUcehHckjxRkat
TLSH FDF48CC3F445258DF8DE827BB5DA8E26E1D51D4A0D43190192B13F90BFEEAC297C0A6D
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: pro12.emailserver.vn
Sending IP: 103.15.48.232
From: vinh.nguyen@tiennamphat.com
Subject: PAYMENT COPY
Attachment: 09876678903987629.PDF.Z (contains "eQUEh2i4S3cEHe9.exe")

NanoCore RAT C2:
xinpincompany.hopto.org:7405 (79.134.225.72)

Pointing to nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
191
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/52197/
Detection(s):
Win.Malware.Cnar-7194164-0
Create hunting rule

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
Creating a file in the Program Files subdirectories
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Enabling autorun by creating a file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/453285
Signature
.NET source code contains potential unpacker
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 279012 Sample: eQUEh2i4S3cEHe9.exe Startdate: 28/08/2020 Architecture: WINDOWS Score: 100 71 Found malware configuration 2->71 73 Malicious sample detected (through community Yara rule) 2->73 75 Multi AV Scanner detection for dropped file 2->75 77 10 other signatures 2->77 8 eQUEh2i4S3cEHe9.exe 7 2->8         started        12 dhcpmon.exe 5 2->12         started        14 eQUEh2i4S3cEHe9.exe 4 2->14         started        16 dhcpmon.exe 2->16         started        process3 file4 61 C:\Users\user\AppData\Roaming\rUdgmvSdV.exe, PE32 8->61 dropped 63 C:\Users\...\rUdgmvSdV.exe:Zone.Identifier, ASCII 8->63 dropped 65 C:\Users\user\AppData\Local\...\tmp90FA.tmp, XML 8->65 dropped 67 C:\Users\user\...\eQUEh2i4S3cEHe9.exe.log, ASCII 8->67 dropped 81 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 8->81 18 eQUEh2i4S3cEHe9.exe 1 15 8->18         started        23 schtasks.exe 1 8->23         started        35 3 other processes 8->35 83 Injects a PE file into a foreign processes 12->83 25 schtasks.exe 12->25         started        37 2 other processes 12->37 27 schtasks.exe 14->27         started        29 eQUEh2i4S3cEHe9.exe 14->29         started        31 schtasks.exe 16->31         started        33 dhcpmon.exe 16->33         started        signatures5 process6 dnsIp7 69 xinpincompany.hopto.org 79.134.225.72, 49732, 7405 FINK-TELECOM-SERVICESCH Switzerland 18->69 55 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->55 dropped 57 C:\Users\user\AppData\Roaming\...\run.dat, International 18->57 dropped 59 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->59 dropped 79 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->79 39 schtasks.exe 1 18->39         started        41 schtasks.exe 1 18->41         started        43 conhost.exe 23->43         started        45 conhost.exe 25->45         started        47 conhost.exe 27->47         started        49 conhost.exe 31->49         started        file8 signatures9 process10 process11 51 conhost.exe 39->51         started        53 conhost.exe 41->53         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4fe72699119a25e2d936a92d07abce418b9a0b91d742de5e21b005ffa82bba2b/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-28 06:33:06 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=j7tsngirtis6fwjwvewqpk6oigfzuc4r25bn4xrbwac77kblxivq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
persistence evasion trojan keylogger stealer spyware family:nanocore
Link:
https://tria.ge/reports/200828-qre26jnc7e/
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
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
xinpincompany.hopto.org:7405
79.134.225.72:7405
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.75
Link:
https://yomi.yoroi.company/submissions/4fe72699119a25e2d936a92d07abce418b9a0b91d742de5e21b005ffa82bba2b

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

z e08d25fb94c5519cae8b498a76a92d8fee3a331da36039257d5e95c20eb8870e

NanoCore

Executable exe 4fe72699119a25e2d936a92d07abce418b9a0b91d742de5e21b005ffa82bba2b

(this sample)

  
Dropped by
MD5 12c74b8d9fd75d08c1d716f330e0d31e
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/52197/
  
Dropped by
SHA256 e08d25fb94c5519cae8b498a76a92d8fee3a331da36039257d5e95c20eb8870e

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