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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f73a9a5efa01d8b8322e142ec0af3f882abc2f6505979a4c4c160c9a2ab48968. 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


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

SHA256 hash: f73a9a5efa01d8b8322e142ec0af3f882abc2f6505979a4c4c160c9a2ab48968
SHA3-384 hash: 1ba5c0a96afc1f04ccb3911e64e827e065888831fc7a14ebe31e0ca2e9ccb04fe42c23fbc5482ca6cc5081bd5c97aa8b
SHA1 hash: d2a476eedf9591810fc0bd0f24fad90353b0089b
MD5 hash: 9a0b6cb8c3752b4a4273ede1e20b1c04
humanhash: montana-zebra-neptune-princess
File name:2770.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:43'008 bytes
First seen:2020-11-23 17:14:14 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:8PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJgsJWNrD86vz7p0XN1q:ook3hbdlylKsgqopeJBWhZFGkE+cL2Nx
TLSH 2913B4E3FA85EC15CE184379086743D8A712EC5267AB938B7345F6393FB07E04A06687
Reporter Anonymous
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
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
333265 bytesWorkbook

Intelligence

File Origin
# of uploads :
1
# of downloads :
228
Origin country :
n/a
Vendor Threat Intelligence
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
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:
Unknown
Detection:
malicious
Classification:
spre.expl.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/545401
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
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 VBS Downloader Generic
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f73a9a5efa01d8b8322e142ec0af3f882abc2f6505979a4c4c160c9a2ab48968/
Threat name:
Document-Excel.Trojan.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2020-11-23 17:15:04 UTC
File Type:
Document
Extracted files:
8
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/201123-fcdc4wnfxs/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
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:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/f73a9a5efa01d8b8322e142ec0af3f882abc2f6505979a4c4c160c9a2ab48968

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.

Comments