MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a
SHA3-384 hash: 7e80d05736169e5ac30413e74c5ebd801111f3b917574bb7c8c88f6e202f3cee2077c6500bbd4a559044607143d78b19
SHA1 hash: 4ff71d7cc50db04b3530059ffe9fab99dc1456ef
MD5 hash: f7e052b5bdc7acba61a7da451888278d
humanhash: washington-jig-edward-juliet
File name:Vietnam Order.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:662'528 bytes
First seen:2021-02-04 09:38:03 UTC
Last seen:2021-02-04 11:43:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:o6Mylpi0bEMHfM39CCId4taTeIATGbErTGW8B0vUK:o6MQb7r4taTeDGSO2
Threatray 1'513 similar samples on MalwareBazaar
TLSH C1E4BE2563D4AB67E17EA77490211010A3F1BC77E329D74E7EE520DD19B6F40CBA2E22
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: smarthost-vip.orion.rs
Sending IP: 77.105.0.121
From: Cojocaru Oleg MDKI <oleg.cojocaru@syngenta.com>
Reply-To: oleg.cojocaru@snakebite.com
Subject: Vietnam Order
Attachment: Vietnam Order.rar (contains "Vietnam Order.exe")

NanoCore RAT C2:
abidejeks.hopto.org:8989 (185.140.53.131)

Pointing to nVpn:

% Information related to '185.140.53.0 - 185.140.53.255'

% Abuse contact for '185.140.53.0 - 185.140.53.255' is 'abuse@privacyfirst.sh'

inetnum: 185.140.53.0 - 185.140.53.255
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.
netname: PRIVACYFIRST-EU
country: EU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2016-10-17T23:24:00Z
last-modified: 2020-11-06T23:02:44Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
130
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Vietnam Order.exe
Verdict:
Malicious activity
Analysis date:
2021-02-04 09:43:46 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/ac5b32fd-2009-4dc6-9926-a3f373777b62

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/115529/
Detection(s):
SecuriteInfo.com.ArtemisF7E052B5BDC7.7353.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/599375
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Binary contains a suspicious time stamp
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted 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
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: 348713 Sample: Vietnam Order.exe Startdate: 04/02/2021 Architecture: WINDOWS Score: 100 59 Malicious sample detected (through community Yara rule) 2->59 61 Multi AV Scanner detection for dropped file 2->61 63 Sigma detected: Scheduled temp file as task from temp location 2->63 65 10 other signatures 2->65 8 Vietnam Order.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\...\CZcRCYUwFjDWb.exe, PE32 8->47 dropped 49 C:\Users\user\AppData\Local\...\tmp1FA9.tmp, XML 8->49 dropped 51 C:\Users\user\...\Vietnam Order.exe.log, ASCII 8->51 dropped 69 Writes to foreign memory regions 8->69 71 Allocates memory in foreign processes 8->71 73 Injects a PE file into a foreign processes 8->73 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 53 abidejeks.hopto.org 185.140.53.222, 49700, 49708, 49711 DAVID_CRAIGGG Sweden 18->53 55 127.0.0.1 unknown unknown 18->55 57 192.168.2.1 unknown unknown 18->57 43 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 18->43 dropped 45 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->45 dropped 67 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->67 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:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-04 09:38:16 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cxykvqy5k7h7ql3g64pal2fbqz2sxdmt76kmbuphzcgrd4gawvna._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a
NanoCore
2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d
NanoCore
4f0035201ba7a3a536727862b8ac8dbf389038c5af1674ff7a982190fed1e30b
NanoCore
644a0403a3c8254a3846b8c07aa7fdeb2cfe21aa5630ca3100949869f60ae407
NanoCore
6a4ecef563225ed9892ff403374d704be5e3b4242ae9f08d624325e83fd22276
NanoCore
db591a08743176655e567ddffcbbd79b9e2e31feadc1feb54a0200296a93d53d
NanoCore
dca09e669f01dcc5efa9ab9120ce3febd53868b3ba12a6e0b4574b82b3d0e392
NanoCore
e26e07749118e8284c28e50553c62bdbe327234b801ffdf2eedb8663444aa459
NanoCore
ee0d34b4e09bd177ff94fcc70278b8b6eb95516d20ca22eed1682dc0a4bb03ff
NanoCore
f4bf592fde78af7ed0b06166ac8265d7b65a2457b9a61f12c2e3a4fad641ac19
NanoCore
+ 1'503 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore keylogger persistence ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210204-kn5vn24e8j/
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
NanoCore
Malware Config
C2 Extraction:
abidejeks.hopto.org:8989
127.0.0.1:8989
Unpacked files
SH256 hash:
5d8fc8cb0f857abdeafb1e6504aadfefa4e050fdc9c8005f454d278468059dc2
MD5 hash:
2901b2d4fc9c13ae0f2303572ba295de
SHA1 hash:
025185074bdb0c9820a317936e3d25d4040bfb22
Link:
https://www.unpac.me/results/f04b9809-9ed4-4612-be3d-77eb8a8cb65a/
SH256 hash:
15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a
MD5 hash:
f7e052b5bdc7acba61a7da451888278d
SHA1 hash:
4ff71d7cc50db04b3530059ffe9fab99dc1456ef
Link:
https://www.unpac.me/results/f04b9809-9ed4-4612-be3d-77eb8a8cb65a/
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/15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
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

rar fd377058509542d962b269490b434b07bcde2a00e17a5601ed01ef1763ebc4c9

NanoCore

Executable exe 15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a

(this sample)

  
Dropped by
MD5 1345133055cf68c97b69b80f8e900f2d
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/115529/
  
Dropped by
SHA256 fd377058509542d962b269490b434b07bcde2a00e17a5601ed01ef1763ebc4c9

Comments