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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 59e8df76a0e5658a44dd2cc0e08d5cd1de8e961eadb19140f8b4cd18ab94c4a4. 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

SHA256 hash: 59e8df76a0e5658a44dd2cc0e08d5cd1de8e961eadb19140f8b4cd18ab94c4a4
SHA3-384 hash: fe262cf85edd008c8f6702958df0c477b755d7853e4aca87e327b124813967d629a378aa9f33df8a5ec713e499e8ed7a
SHA1 hash: 0566e4986e73d94c48013041940a5148be2fc7fa
MD5 hash: 539bf98cd5516cba6a4b4dc82b213242
humanhash: potato-muppet-beryllium-single
File name:spin.xls
Download: download sample
Signature ZLoader
File size:36'864 bytes
First seen:2022-04-28 05:41:58 UTC
Last seen:2022-04-28 06:33:30 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:9PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJg3eHjXe+hBNl7bO:1ok3hbdlylKsgqopeJBWhZFGkE+cL2N5
TLSH T1E9F272F3B7D5AD15CE48837A48674790A712EC516B6B838B7345F73A3FB1BE08902186
TrID 58.2% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
33.5% (.XLS) Microsoft Excel sheet (32500/1/3)
8.2% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter adm1n_usa32
Tags:xls 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
326845 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 :
2
# of downloads :
287
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Sending a custom TCP request by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
exploit macros macros-on-open zloader
Label:
Malicious
Suspicious Score:
9.9/10
Score Malicious:
1%
Score Benign:
0%
Result
Threat name:
Unknown
Detection:
malicious
Classification:
spre.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
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)
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
Threat name:
Document-Excel.Trojan.ZLoader
Status:
Malicious
First seen:
2020-12-01 03:32:30 UTC
File Type:
Document
Extracted files:
5
AV detection:
22 of 42 (52.38%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro xlm
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Script User-Agent
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Blocklisted process makes network request
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://skill.fashion/wp-data.php
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

ZLoader

Excel file xls 59e8df76a0e5658a44dd2cc0e08d5cd1de8e961eadb19140f8b4cd18ab94c4a4

(this sample)

  
Delivery method
Distributed via web download

Comments