MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4. 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


Nokoyawa


Vendor detections: 7


Intelligence 7 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4
SHA3-384 hash: f15d2b22e92ce614523883962a2556936f38342417c11664c27cb2d2b6446666a9422bd8b8302bbead7c3c2c64fa18d2
SHA1 hash: eda84fdb6fab3592df696fe57d52045d8f664bf7
MD5 hash: 2dab3c06cafa0877ed841eb72beae0ae
humanhash: seventeen-diet-uniform-helium
File name:259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4
Download: download sample
Signature Nokoyawa
Create hunting rule
File size:455'168 bytes
First seen:2022-12-20 21:20:34 UTC
Last seen:2022-12-27 05:15:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fd93c615e10c26bda651551a69e41a8d (1 x Nokoyawa, 1 x Heodo)
ssdeep 6144:+zEXUXIsN2vGdSw0ld6Avhrjpjryd6O9mrmcFS8AKDbAw:+zEXv2xSwa62hvUf9mCccSAw
Threatray 5 similar samples on MalwareBazaar
TLSH T154A45C16B79559FDD06AC07482464521BA327C9A0B35FEFF1698B2352E36AF02F3CB14
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter Arkbird_SOLG
Tags:exe nokoyawa Ransomware

Intelligence

File Origin
# of uploads :
4
# of downloads :
536
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4
Verdict:
No threats detected
Analysis date:
2022-12-20 21:21:45 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/fcaf709b-8365-4ef5-8a6f-d5e67ed09fd5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/348520/
Detection(s):
SecuriteInfo.com.Trojan.Ransom.Nokoyawa.A.10440.3236.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Verdict:
No Threat
Threat level:
  2/10
Confidence:
60%
Tags:
anti-debug greyware
Link:
https://www.filescan.io/uploads/63a2273fe10f7185fe72d49a/reports/a9528ac4-db76-4dd1-a689-7523ce8b794e/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0fe1f5fc-af4d-4460-a220-91068653670e
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/1138247
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 770977 Sample: 6lfMKLPIbJ.exe Startdate: 20/12/2022 Architecture: WINDOWS Score: 48 10 Multi AV Scanner detection for submitted file 2->10 6 6lfMKLPIbJ.exe 1 2->6         started        process3 process4 8 conhost.exe 6->8         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4/
Threat name:
Win64.Ransomware.Nokoyawa
Create hunting rule
Status:
Malicious
First seen:
2022-10-05 15:53:31 UTC
File Type:
PE+ (Exe)
AV detection:
11 of 41 (26.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ewpz5qigijccmz5ebp3y6a5pf7dnmu2ehthhaytdn23vamywk7ca._file
Verdict:
malicious
Similar samples:
30588ffce8a0e42ed5a0a866bff68f0fe4405923b14edd62024f1b70918c5c5b
Nokoyawa
47c00ac29bbaee921496ef957adaf5f8b031121ef0607937b003b6ab2a895a12
Nokoyawa
558607b112f50fbc472d9d72f0d5179b931a461aa473274badd4e064ee432f2a
Nokoyawa
92174d06ee7624fa42fb9f8edd97bfae7a5a627025dfe6d2493f7bf9fad57f35
Nokoyawa
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/221220-z7a1hsbb43/
Unpacked files
SH256 hash:
259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4
MD5 hash:
2dab3c06cafa0877ed841eb72beae0ae
SHA1 hash:
eda84fdb6fab3592df696fe57d52045d8f664bf7
Link:
https://www.unpac.me/results/226c136a-9dba-453a-abcd-c0494a74f7cb/
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/259f9ec10642442667a40bf78f03af2fc6d653443cce7062636eb750331657c4

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:Emotet
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule To Detect Emotet
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:Rustyloader_mem_loose
Create hunting rule
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Link
https://www.zscaler.com/blogs/security-research/nokoyawa-ransomware-rust-or-bust
Cape
Cape
https://www.capesandbox.com/analysis/348520/

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