MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 27ec98afe8ece1ca5895c72cb758e934919518e794cb14335dfe40005c69ce52. 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: 6


Intelligence 6 IOCs 1 YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 27ec98afe8ece1ca5895c72cb758e934919518e794cb14335dfe40005c69ce52
SHA3-384 hash: d97c8c82ceececb5318b5e7fbdb3ec3917302e4100788ff228f63dabd06113af5341dd3cc89d80d16229d5c7d70dcbd8
SHA1 hash: 14604fd58cc224d6f1ff72c168637c045cdaadbc
MD5 hash: 6391047eda9aaa6a0e83c153a6b5d711
humanhash: stairway-berlin-march-florida
File name:Signed Proposal.z
Download: download sample
Signature NanoCore
Create hunting rule
File size:329'235 bytes
First seen:2023-05-02 07:02:49 UTC
Last seen:Never
File type: z
MIME type:application/x-rar
ssdeep 6144:UA2F+ZBF3mEmc924YHLx6TqlPFIJhtJR2AU4j0Nz42g7OzRIiTA65d:32F+Zf3rmn4mt6Tq1aLn5fI4t7OzRIiN
TLSH T16C6423B5A1F212BA6508D9BCB749D3E423CF017528311E86EB1B642F513AF870D85FA7
TrID 58.3% (.RAR) RAR compressed archive (v-4.x) (7000/1)
41.6% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:NanoCore z


Avatar
cocaman
Malicious email (T1566.001)
From: "Haytham <info@gir-group.com>" (likely spoofed)
Received: "from power.cos.net (unknown [80.85.152.5]) "
Date: "1 May 2023 05:02:29 -0700"
Subject: "Siged Proposal"
Attachment: "Signed Proposal.z"

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
107.182.128.9:7727 https://threatfox.abuse.ch/ioc/1109433/

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Signed Proposal.exe
File size:344'896 bytes
SHA256 hash: 62ac819f738f75c7840ae6c91a53ecabb0c711b37ed6cf022f9d1a605a523460
MD5 hash: c98de529cef3f418de14bccdff7503f9
MIME type:application/x-dosexec
Signature NanoCore
Vendor Threat Intelligence
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/6450b5a95642c9c405e23bc3/reports/51c030d1-db97-4eb0-aa66-ee3e28d883bb/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/27ec98afe8ece1ca5895c72cb758e934919518e794cb14335dfe40005c69ce52
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/27ec98afe8ece1ca5895c72cb758e934919518e794cb14335dfe40005c69ce52/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-05-01 10:35:59 UTC
File Type:
Binary (Archive)
Extracted files:
5
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=e7wjrl7i5tq4uwevy4wlowhjgsizkghhstfrim257zaaaxdjzzja._file
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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:malware_Nanocore_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:MALWARE_Win_NanoCore
Create hunting rule
Author:ditekSHen
Description:Detects NanoCore
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Feb18_1_RID2DF1
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 (Nextron Systems)
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:Nanocore_RAT_Gen_2_RID2D96
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:pe_imphash
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Nanocore_d8c4e3c5
Create hunting rule
Author:Elastic Security
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 27ec98afe8ece1ca5895c72cb758e934919518e794cb14335dfe40005c69ce52

(this sample)

NanoCore

Executable exe 62ac819f738f75c7840ae6c91a53ecabb0c711b37ed6cf022f9d1a605a523460

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 62ac819f738f75c7840ae6c91a53ecabb0c711b37ed6cf022f9d1a605a523460
  
Dropping
NanoCore

Comments