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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5a8cb8dd417375c253bfecc296b2200d7cc2d7f1820a5ec2c55a01977c37369. 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
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SHA256 hash: c5a8cb8dd417375c253bfecc296b2200d7cc2d7f1820a5ec2c55a01977c37369
SHA3-384 hash: 63ac366f842c4a43d8f99b11e8acb5f02a6439e8ff06ff7c0728972928b5508046c5b9b27976b51b7d90683f08e178a9
SHA1 hash: 2b689ee4ae90ec7ee398b582334def80036f1592
MD5 hash: 27c76051e59d101e46ffbda2e7a32588
humanhash: march-four-east-jupiter
File name:tiu4484.xls
Download: download sample
Signature ZLoader
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File size:254'464 bytes
First seen:2020-08-05 17:22:18 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Jk3hbdlylKsgqopeJBWhZFVE+W2NdAKVtmwzVsbOIb5/PXsOD+ywvs:qfm29i5/sU
TLSH FB44EBD3E6834FD6CED798350F5B53E0E346AE3C25268EDE64C07228B65E4A19F0D186
Reporter JAMESWT_WT
Tags:xls ZLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
105
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.Excel4PaperPlanes.20200705.UNOFFICIAL
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TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
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TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL
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TwinWave.EvilDoc.ZloaderMustHaveBeenLoveButItsOverNowConditionallyBasedOnEnv.20200804.UNOFFICIAL
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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
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Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/411742
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/c5a8cb8dd417375c253bfecc296b2200d7cc2d7f1820a5ec2c55a01977c37369/
Threat name:
Document-Word.Trojan.Kryptik
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Status:
Malicious
First seen:
2020-08-05 17:21:18 UTC
File Type:
Document
Extracted files:
3
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ywumxdouc43vyjj373gcs2zcadl4yll7daqkl3bmkwqbs56donuq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200805-zhtc2jr1g2/
Behaviour
Suspicious Office macro
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/c5a8cb8dd417375c253bfecc296b2200d7cc2d7f1820a5ec2c55a01977c37369

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
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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.

  
X
https://twitter.com/DynamicAnalysis/status/1291060958463483907?s=20

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