MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f4906997a52eb2fd4ee5341cc7acadbb66397a2edd75d2781770ede1e14dbef. 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: 5


Intelligence 5 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f4906997a52eb2fd4ee5341cc7acadbb66397a2edd75d2781770ede1e14dbef
SHA3-384 hash: 1ac87fa0c64349b730afe4ec44fb53af1a7308d386ddc303f4d165ffa489c4f951ef66ab6221721e6ea09baebc46e0f9
SHA1 hash: f24f7f1cb2c5691aa8880ebd2179e13f00249c19
MD5 hash: d84cf4b2fc4fdd54ffb97cb1334b0947
humanhash: angel-mobile-nuts-blue
File name:xpess.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:561'152 bytes
First seen:2020-05-06 19:18:51 UTC
Last seen:2020-05-06 20:21:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:4Ap/XL84Ew/BBww/aQC73zF4+hysYByZ4n:4m/I4hBwwA7DFdysYBM4
Threatray 1'192 similar samples on MalwareBazaar
TLSH 09C4B31DBB1EEEB4F4AEB57C60C511518013BB9119C3A236AB8CF646DB31D8409F6E4B
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
NanoCore RAT payload URL:
http://rosolli.fi/xpess.exe

NanoCore RAT C2:
bright1.awsmppl.com:4777

Pointing to nVpn:

% Information related to '79.134.225.64 - 79.134.225.127'

% Abuse contact for '79.134.225.64 - 79.134.225.127' is 'abuse@your-vpn.network'

inetnum: 79.134.225.64 - 79.134.225.127
netname: YOUR_VPN_NETWORK
country: DE
remarks: ****************************************************
remarks: This subnet belongs to a VPN service provider.
remarks: We protect the right to privacy, which means
remarks: we don't log the activities of our users.
remarks: ****************************************************
admin-c: EH4074-RIPE
tech-c: YVN10-RIPE
status: ASSIGNED PA
abuse-c: YVN10-RIPE
org: ORG-YVN1-RIPE
mnt-by: AF15-MNT
created: 2019-07-19T18:26:38Z
last-modified: 2019-07-19T18:51:28Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
88
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.MSIL.Packed.SmartAssembly.AY.18560.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-05-06 19:37:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
49
AV detection:
27 of 30 (90.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h5eqngl2klvs7vhokna4y6wk3o3ghf5c5xlv2j4bo4hn4hqu3pxq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
23143dfb44c72eeec3b05a6d3dde2c4245adcb7db200c00f7700257830b4bcc4
NanoCore
394674b4e655b4c844746da331510aecd02162402ee5a267eda539753eebd5e9
NanoCore
5c0f2a6b96505881c5cdb0c3c931ace0d2de9725e3094246973291ad5ca9d0e4
NanoCore
6cef6b24f9c34ef5503ed6ba52ded7847882e7599bd39954ff9d3409042eeb74
NanoCore
8ee9784e9c874e7b40e667115655e0965420c5233238ca1499cdd7c25c79dc6c
NanoCore
93bf34f3e42fb55786de7c65c2aa7f8340194e12708170e7f9a0bf0c42c2a72f
NanoCore
b87295a4b2fb2d2f4df9d502d52e2f50a5e9b3ba9f56b17e252fa0f3022ae6f4
NanoCore
bd969441be871b85681f3e4e9b933c311ab6d9a9360822f6411c1d2edbae4f26
NanoCore
ed6ea055c622adab41b5eba73b4d556c4c843b9e77e21933297ca0ce972ce5c4
NanoCore
ef5b4a828d4322e2ca5681423488e03e9991191809fc068d80ce0bbeba792984
NanoCore
+ 1'182 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/201109-xpfgfsgymj/
Behaviour
Delays execution with timeout.exe
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Drops startup file
Loads dropped DLL
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
bright1.awsmppl.com:4777
ml.warzonedns.com:4777
Please note that we are no longer able to provide a coverage score for Virus Total.

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

Word file doc 8ee9784e9c874e7b40e667115655e0965420c5233238ca1499cdd7c25c79dc6c

NanoCore

Executable exe 3f4906997a52eb2fd4ee5341cc7acadbb66397a2edd75d2781770ede1e14dbef

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/359046/
  
Dropped by
MD5 8a74e661dcabd3d976a816d252219c30
  
Dropped by
SHA256 8ee9784e9c874e7b40e667115655e0965420c5233238ca1499cdd7c25c79dc6c
  
Delivery method
Distributed via web download

Comments