MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 667414175815fc56a727cdf725c77dd45d946ee906ebceff6797f3c766f3121d. 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: 8


Maldoc score: 3


Intelligence 8 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 667414175815fc56a727cdf725c77dd45d946ee906ebceff6797f3c766f3121d
SHA3-384 hash: ffe8a20881fbe91716d0e6c3037a267938faa63efa0c29f7c6f5a3ce52caca57ffd579724f85de91943cbe7b892c2efa
SHA1 hash: 988fe9a643e5725db4a7857220f1d57a5c88d93e
MD5 hash: ac0af00709beac4a9846733d5a40f8a6
humanhash: winner-washington-montana-hot
File name:SecuriteInfo.com.Mal.Generic-S.3532.3266
Download: download sample
Signature ZLoader
Create hunting rule
File size:37'376 bytes
First seen:2020-12-01 04:04:03 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 768:kPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJeHcjjvSoofMPdiNgDET:Aok3hbdlylKsgqopeJBWhZFGkE+cL2NJ
TLSH 91F284E3B7D5DD55CE48833548A74251AB06EC916B6B838B3388F7393FB1BE08A06547
Reporter SecuriteInfoCom
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: 3
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
327509 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
AutoExecAuto_OpenRuns when the Excel Workbook is opened
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
110
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Mal.Generic-S.3532.3266.UNOFFICIAL
Create hunting rule

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

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

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.20201116.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.M2.20201116.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a process with a hidden window
DNS request
Sending a custom TCP request
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
Verdict:
Malicious
File Type:
Legacy Office File
Link:
https://app.docguard.net/667414175815fc56a727cdf725c77dd45d946ee906ebceff6797f3c766f3121d/results/dashboard
Result
Verdict:
MALICIOUS
Details
Excel 4.0 Macro
Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
ZLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/552701
Signature
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Injects code into the Windows Explorer (explorer.exe)
Microsoft Office drops suspicious files
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (has network functionality)
Potential malicious VBS script found (suspicious strings)
System process connects to network (likely due to code injection or exploit)
Yara detected ZLoader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/667414175815fc56a727cdf725c77dd45d946ee906ebceff6797f3c766f3121d/
Threat name:
Document-Excel.Trojan.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2020-11-29 23:38:45 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mz2bif2ycx6fnjzhzx3slr352rozi3xja3v4573hs7z4ozxtcioq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/201201-25en57vvb6/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Enumerates system info in registry
Modifies Internet Explorer settings
JavaScript code in executable
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/667414175815fc56a727cdf725c77dd45d946ee906ebceff6797f3c766f3121d

File information

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

Web download

ZLoader

Excel file xlsx 667414175815fc56a727cdf725c77dd45d946ee906ebceff6797f3c766f3121d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/875867/
  
Delivery method
Distributed via web download

Comments