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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5dfd308c1b2a8967e38d380dcff4de930185b7f560feef786a6378fa998b06d. 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: 5


Maldoc score: 4


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

SHA256 hash: b5dfd308c1b2a8967e38d380dcff4de930185b7f560feef786a6378fa998b06d
SHA3-384 hash: cfb8fb922a754b92a320f474987dddcd5a4d46ab28dc4430b2deef475235a2d9dd20bc9896e863e0c6969db1e3156ddd
SHA1 hash: b69978d63c68b096be7fbdd3b0583c48183eaf16
MD5 hash: daec5f6a115a50bb689a9784113d54ab
humanhash: yankee-montana-four-lactose
File name:invoice_2305.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:33'280 bytes
First seen:2020-12-18 11:28:43 UTC
Last seen:2020-12-18 13:36:54 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:QPwk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJz/aR7WNkx4DD:8wk3hbdlylKsgqopeJBWhZFGkE+cL2N0
TLSH D7E25FE7F3C5AC46CD5A077908AB83A07723EC611B57938B3395F7252FB1A80894356B
Reporter LiamCommon
Tags:ZLoader

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 4
Application name is Microsoft Excel
Office document is in OLE format
OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
323340 bytesWorkbook
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
4
# of downloads :
198
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoice_2305.xls
Verdict:
No threats detected
Analysis date:
2020-12-18 11:29:05 UTC
Tags:
macros macros40
Link:
https://app.any.run/tasks/a17a6adc-0a57-4c47-b3b4-8a07d8771aa1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Detection(s):
TwinWave.EvilDoc.Zloader.ComfortablyNumb.M2.20201208.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Zloader.ComfortablyNumb.M3.20201208.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Zloader.ComfortablyNumb.M4.20201208.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4.BlackSubmarines.2020.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Result
Verdict:
Malicious
File Type:
Legacy Office File
Link:
https://app.docguard.net/b5dfd308c1b2a8967e38d380dcff4de930185b7f560feef786a6378fa998b06d/results/dashboard
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/566264
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5dfd308c1b2a8967e38d380dcff4de930185b7f560feef786a6378fa998b06d/
Threat name:
Document-Word.Downloader.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2020-12-18 11:29:05 UTC
AV detection:
12 of 48 (25.00%)
Threat level:
  3/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/201218-m7emw2vk9x/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Checks processor information in registry
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/b5dfd308c1b2a8967e38d380dcff4de930185b7f560feef786a6378fa998b06d

File information

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

Malspam

ZLoader

Excel file xls b5dfd308c1b2a8967e38d380dcff4de930185b7f560feef786a6378fa998b06d

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments