MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a. 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: 4


Intelligence 4 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a
SHA3-384 hash: 9bebc468e9713c6a36a9fcb58be68f508ae4213abd9b1460befefbfca98607d778c56ffd828d144b0477550bf9012d35
SHA1 hash: 163dca73ffd709bf6f8f6c6d893ae3feeb89455f
MD5 hash: 59c3d60a292a143d1e4373eecb08f569
humanhash: oven-sweet-twelve-fillet
File name:SecuriteInfo.com.Variant.Ursu.823174.10596.7660
Download: download sample
Signature NanoCore
Create hunting rule
File size:397'312 bytes
First seen:2020-04-18 18:36:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:UPn9gk6tLl5DSgTQ+SRzoJXrsIYqoISCYY7pl0n5JzM6h5sN1YwNKrgqL1F1B1TP:UPn9gXl5DtQ+ZNCrRzPh5sN2fca7PJg
Threatray 1'138 similar samples on MalwareBazaar
TLSH 0C84CF4163D88A26F6DF2BFDA56801558B7AB382641FE78F1CDCA0F505933909EC6363
Reporter SecuriteInfoCom
Tags:NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Variant.Ursu.823174.10596.7660.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-04-18 16:13:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
25 of 31 (80.65%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ewefn4cydf4jwr7ax3kywhpupglwunk42mfzkozd7hrpluugk6fa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
479dfa7690895205a1215d3edae68443671a448b6c09dc114d617c32f1a3d259
NanoCore
55374abf463b7c308310fc62d2d25da0059234c002669bae24a710cf695be746
NanoCore
7926f37cb45c730b9fa347b9e605d1b8e6a055b97f335bf8f1ea99e953fc94da
NanoCore
84f2cd380b681104f068a5f49d9b4b790a949f042e1f9bea0b793c076489f72e
NanoCore
8caedefa8cf9273522057503dc8c9cabeaea4eb113a612040f1da56f8d85dbbf
NanoCore
a032cd20c067b83f1cab391af7671f7ae669de96dbf995f08580b14d218aeccc
NanoCore
b6bb2781499406a147ead8d31ee99cb7e691908f86354690c8377f8133cacae5
NanoCore
c660d1d93adc735a9a5c59d18eecf6c4124b4e32b3a704bb754e490a2bf5eb35
NanoCore
dca09e669f01dcc5efa9ab9120ce3febd53868b3ba12a6e0b4574b82b3d0e392
NanoCore
+ 1'128 additional samples on MalwareBazaar
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.

Web download

NanoCore

Executable exe 258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/343022/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments