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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b63c2632e61ca6f922860afc6f451cea59941553482d75facdb6730e2fbd82f. 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: 4


Maldoc score: 4


Intelligence 4 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b63c2632e61ca6f922860afc6f451cea59941553482d75facdb6730e2fbd82f
SHA3-384 hash: ba7f831db3e60d4f069604c321b95eea181d85b077519b90457b75a894e5f4ad7fb84a1f372b1dedc07b9194eb1d14b7
SHA1 hash: 7e198b623883ed7b2e162e3b7c51894e7f393d05
MD5 hash: 3f9657c9a8550cf48b010bb2d3dae618
humanhash: oklahoma-table-black-solar
File name:doc.1558.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:33'280 bytes
First seen:2020-12-14 10:40:30 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:4Puk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJY53sWN3dX12Q:0uk3hbdlylKsgqopeJBWhZFGkE+cL2N/
TLSH 1AE23EA7B3D5AC86C99903B549A783A07B23FC111B57838B3385F72A2F71A908E43557
Reporter JoulK
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: 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
323487 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 :
1
# of downloads :
168
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
doc.1558.xls
Verdict:
No threats detected
Analysis date:
2020-12-14 10:37:43 UTC
Tags:
macros macros40
Link:
https://app.any.run/tasks/06def8b0-9d5a-4bcc-af28-d9df62cac0e4

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.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/8b63c2632e61ca6f922860afc6f451cea59941553482d75facdb6730e2fbd82f/results/dashboard
Result
Threat name:
Unknown
Detection:
clean
Classification:
n/a
Score:
1 / 100
Link:
https://www.joesandbox.com/analysis/562050
Behaviour
Behavior Graph:
n/a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b63c2632e61ca6f922860afc6f451cea59941553482d75facdb6730e2fbd82f/
Threat name:
Document-Office.Downloader.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2020-12-14 10:41:04 UTC
AV detection:
5 of 48 (10.42%)
Threat level:
  3/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/201214-d7lfn5t11a/
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:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/8b63c2632e61ca6f922860afc6f451cea59941553482d75facdb6730e2fbd82f

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Malspam

ZLoader

Excel file xls 8b63c2632e61ca6f922860afc6f451cea59941553482d75facdb6730e2fbd82f

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments