MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26. 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


Vidar


Vendor detections: 7


Intelligence 7 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26
SHA3-384 hash: ec9a69c5ff8dc30ab9f777e70e901815d092ec4183fb2f51d48d4090a8230f0aad019f973f2eeab16ab9a785780e14d8
SHA1 hash: ef1dda8d2d9d6f352490de4eeb25296655923932
MD5 hash: fac6fb0ffb098f0612c37f8cb5a6755d
humanhash: cola-nuts-double-speaker
File name:f8g8gqwb.zip
Download: download sample
Signature Vidar
Create hunting rule
File size:8'152'608 bytes
First seen:2026-02-04 11:37:29 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 196608:xlZoXOykFvDWNXZqoLdRSfat0J4IzR937QZeb1tQbBtDa:1oX+vDUX/afacrLQkbEba
TLSH T17C86333FDD572A98A13917C4EF7EF0CF0A948C39CAC24A52CD1BD449CA44C5B36C9A96
Magika zip
Reporter burger
Tags:HIjackLoader zip

Intelligence

File Origin
# of uploads :
1
# of downloads :
111
Origin country :
NL NL
File Archive Information

This file archive contains 9 file(s), sorted by their relevance:

File name:MSVCP140.dll
File size:438'120 bytes
SHA256 hash: 9e9b340bba6d47fb15cde3b9d0568c6d296e3299eca0dfcd2bf000637b36fe13
MD5 hash: 3a207bdfaa989abab1cf5f7e86555b87
MIME type:application/x-dosexec
Signature Vidar
File name:Quuskaer.jqc
File size:27'636 bytes
SHA256 hash: a634d0f4c86226d4930b4e58a534fdac46c9278b5b22207310cbbe0f66df92d6
MD5 hash: 0259178ddf8e21e97f7995a579c00665
MIME type:application/octet-stream
Signature Vidar
File name:Quock.ppuz
File size:1'566'062 bytes
SHA256 hash: a05ff388f0fa921b15a388a11c580bfa9c697a365d7e83d31894b149354e12f8
MD5 hash: 94c8c4e38265f8a6f9ceb1b66d4a851b
MIME type:application/octet-stream
Signature Vidar
File name:tier0.dll
File size:145'256 bytes
SHA256 hash: ecb47aceb80a05178d89bc01ba1923c52d4b6e67d37f2a13fc7be299cd05aa2a
MD5 hash: 20e283386181afdf0ca2b7dd3e4d2edd
MIME type:application/x-dosexec
Signature Vidar
File name:Qt5Widgets.dll
File size:4'553'576 bytes
SHA256 hash: 206fd7bb47d7556815074b3f0606055712e23fef8b4ff393c9e0d8ded8e9c140
MD5 hash: 71efc3a554ac91dc24e530e8d530bdff
MIME type:application/x-dosexec
Signature Vidar
File name:Sys_Analyzer.exe
File size:383'336 bytes
SHA256 hash: 350a5f5fb8d76e5088317966694b44aef6d3f3387dc572527f0f412891215e04
MD5 hash: e1fc955b7309ad1ddce0b4a6564a7a44
MIME type:application/x-dosexec
Signature Vidar
File name:Qt5Gui.dll
File size:5'380'456 bytes
SHA256 hash: 4be72d127ac97fa332a9d14dee916e1a198dacd1fcce688ec81155dc72e4f3e2
MD5 hash: 00b2a30beece16c28bdf2b97b06acf1e
MIME type:application/x-dosexec
Signature Vidar
File name:VCRUNTIME140.dll
File size:77'672 bytes
SHA256 hash: b48dc53977477f13ca80e7aa002d23a127b53515c0a45fe82c2a87f35450d1d0
MD5 hash: 30f437cc4598570e7cc661f8131daf2e
MIME type:application/x-dosexec
Signature Vidar
File name:Qt5Core.dll
File size:5'248'360 bytes
SHA256 hash: e3e0cd84ff82900e34273bf9f5163533d67c8b977adad263a9e1f5ad30a1d4c9
MD5 hash: 3c444b7e23b1b808524f0019057b3e61
MIME type:application/x-dosexec
Signature Vidar
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/afdc64d5-31ff-4436-ba88-fc35e9536a3a/
Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69832fa76b1af47db72cc08c
Tags:
n/a
Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26/results/dashboard
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug base64 expired-cert fingerprint keylogger microsoft_visual_cc signed
Link:
https://www.filescan.io/uploads/69832fa6930564ff3c895f65/reports/8004f6e6-407c-42e1-9cbe-2d37a7e71b75/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
File Type:
zip
First seen:
2026-01-31T13:25:00Z UTC
Last seen:
2026-02-01T00:24:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26/results?tab=lookup
Score:
29%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26
Verdict:
inconclusive
YARA:
3 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Zip Archive
Link:
https://app.malva.re/file/fac6fb0ffb098f0612c37f8cb5a6755d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26/
Threat name:
Win32.Trojan.Hijackloader
Create hunting rule
Status:
Suspicious
First seen:
2026-01-31 18:20:42 UTC
File Type:
Binary (Archive)
Extracted files:
42
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=54yjtlqf4dv44hg5onjfhzlhshsv42jurxeq7gakpkjg6lu3z4ta._file
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:hijackloader family:remcos family:vidar botnet:27 discovery loader rat stealer
Link:
https://tria.ge/reports/260204-pkltdsaw5f/
Behaviour
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Malware Config
C2 Extraction:
81.17.24.58:3812
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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_Websites
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects the reference of suspicious sites that might be used to download further malware
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:test_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string

File information

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

Vidar

Microsoft Software Installer (MSI) msi 0c82c872b3a66cb680b2244ec6a8f8ff9c5dc4d49b67ec4e83994bad9deab5c2

Vidar

zip ef3099ae05e0ebce1cdd735253e56791e55e69348dc90f980a7a926f2e9bcf26

(this sample)

Vidar

Executable exe 9ee477d4bb72c410d83d7d8fa755c5eab5b0988736ba3bb68524c4dbb5427f6c

  
Dropped by
SHA256 0c82c872b3a66cb680b2244ec6a8f8ff9c5dc4d49b67ec4e83994bad9deab5c2
  
Dropping
SHA256 9ee477d4bb72c410d83d7d8fa755c5eab5b0988736ba3bb68524c4dbb5427f6c
  
Dropping
MD5 3ce126ecc6dbbac7d8f7a361548c6d1d
  
Dropping
SHA256 ecb47aceb80a05178d89bc01ba1923c52d4b6e67d37f2a13fc7be299cd05aa2a
  
Dropping
MD5 20e283386181afdf0ca2b7dd3e4d2edd
  
Dropped by
MD5 72a8f0efa1ecb4725a9b2f52eda87a07
  
URLhaus
https://urlhaus.abuse.ch/url/3772100/
  
Delivery method
Distributed via web download

Comments