🤲🏼 NEW | abuse.ch Community Hub! Earn recognition 🏅 for the malware intelligence you share, climb the leaderboards 📈, and connect with like-minded contributors who share your hunting focus 🤝. Ready to unlock your profile? Go to the Community Hub →

MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a9a99975ff8d34939bd045ff75bd184d370532c7418fffcfaa139d376fd0bca. 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


ZLoader


Vendor detections: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a9a99975ff8d34939bd045ff75bd184d370532c7418fffcfaa139d376fd0bca
SHA3-384 hash: dbf6064af339b7f9ce0f7fbf5559f09fd2cc400846976f0c908774c18fb24ae5e6a41d46cf23efd4ccfb3a2bbad13ba8
SHA1 hash: 91e656e21b8ece242eecb0c928257c436059bf92
MD5 hash: 7952af6620c1ba0d2885afc497ae7f11
humanhash: seventeen-chicken-princess-xray
File name:doc 5135.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:257'024 bytes
First seen:2020-08-05 16:30:59 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Kk3hbdlylKsgqopeJBWhZFVE+W2NdAdEFn6NRiSlBQ4PMYZXm6:A0n8R2sd26
TLSH F244D8E1DE414F64FED3D87A478B57DA5342AD3D260D8F8EA1C0B260B6CD1AD5B0C0A6
Reporter Anonymous
Tags:ZLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.Excel4PaperPlanes.20200705.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderMustHaveBeenLoveButItsOverNowConditionallyBasedOnEnv.20200804.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process with a hidden window
Deleting a recently created file
Possible injection to a system process
Launching a process by exploiting the app vulnerability
Creating a process from a recently created file
Result
Threat name:
Hidden Macro 4.0
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/411677
Signature
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Found abnormal large hidden Excel 4.0 Macro sheet
Found Excel 4.0 Macro with suspicious formulas
Injects code into the Windows Explorer (explorer.exe)
Microsoft Office drops suspicious files
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Execute DLL with spoofed extension
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Office product drops script at suspicious location
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6a9a99975ff8d34939bd045ff75bd184d370532c7418fffcfaa139d376fd0bca/
Threat name:
Document-Word.Downloader.EncDoc
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 16:31:07 UTC
File Type:
Document
Extracted files:
3
AV detection:
16 of 29 (55.17%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nknjtf277djuson5arp7ow6rqtjxauzmoqmp77h2ue45g5x5bpfa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200805-6lkxv6khlj/
Behaviour
Suspicious Office macro
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
ZLoader
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6a9a99975ff8d34939bd045ff75bd184d370532c7418fffcfaa139d376fd0bca

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_ZLoader_xls_20200804
Create hunting rule
Author:abuse.ch
Description:Detects ZLoader XLS
Rule name:msxls_zloader_anti_sandbox_biff_formula
Create hunting rule
Description:Finding XLS2003 documents with a specific anti-sandbox expression
Rule name:msxls_zloader_formula_ptg_ref_num_add_count
Create hunting rule
Description:Finding XLS2003 documents with a large number of PtgRef->PtgAdd->PtgNum entries
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples

File information

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

Malspam

ZLoader

Excel file xls 6a9a99975ff8d34939bd045ff75bd184d370532c7418fffcfaa139d376fd0bca

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments