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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 440496a116ae475c19a8a00af2b51c05c6a62040c4ec556fc7e7788682962be6. 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: 7


Intelligence 7 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 440496a116ae475c19a8a00af2b51c05c6a62040c4ec556fc7e7788682962be6
SHA3-384 hash: f91b2ca5f5778e6a25bde313cfe82f2108cb714591dc4b1d3831756a654da1da4aa4d177fef35a09fe1f3e49edf48163
SHA1 hash: cb22de552873492e9925853b3cb7ad2ad5a00e8c
MD5 hash: cab7720d67d7700d40b24fee321734ce
humanhash: steak-finch-batman-april
File name:case (2553).xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:156'700 bytes
First seen:2021-01-26 20:25:44 UTC
Last seen:2021-01-26 21:53:17 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:5Vlwd1Rd+d6sdbdu9tnZ8hDwjHYDC0+v3:5VyVsUs9atZZusf
TLSH 35E329734802D125C6D9EEF9AE08EC24359215AD8E3BD9DAD1D23ABB3052F4CB710F95
Reporter cocaman
Tags:xls ZLoader


Avatar
cocaman
Malicious email (T1566.001)
From: ""Katie T. Carpenter" <centralnotification@velvetwinter.com>" (likely spoofed)
Received: "from velvetwinter.com (unknown [89.163.252.165]) "
Date: "Tue, 26 Jan 2021 17:49:54 +0000"
Subject: "Agreement information956479"
Attachment: "case (2553).xls"

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
Office document is in encrypted
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
3145766 bytesBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
227
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
case (2553).xls
Verdict:
Malicious activity
Analysis date:
2021-01-26 20:31:59 UTC
Tags:
macros loader zloader
Link:
https://app.any.run/tasks/811dbe42-5ab9-464b-a556-76ae23af3732

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection(s):
Twinwave.EvilDoc.Excel4Biff5PassProtectedBookBurnInHell.20201202.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
File Type:
Legacy Office File
Link:
https://app.docguard.net/440496a116ae475c19a8a00af2b51c05c6a62040c4ec556fc7e7788682962be6/results/dashboard
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/591246
Signature
Contains functionality to inject code into remote processes
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 344668 Sample: case (2553).xls Startdate: 26/01/2021 Architecture: WINDOWS Score: 84 36 Document exploit detected (drops PE files) 2->36 38 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->38 40 Sigma detected: Microsoft Office Product Spawning Windows Shell 2->40 42 Office process drops PE file 2->42 8 EXCEL.EXE 91 48 2->8         started        process3 dnsIp4 34 coopacaustro.com 172.67.168.245, 443, 49165, 49166 CLOUDFLARENETUS United States 8->34 24 C:\Users\user\AppData\Local\...\scfrd[1].dll, PE32 8->24 dropped 26 C:\ProgramData\formnet.dll, PE32 8->26 dropped 44 Document exploit detected (creates forbidden files) 8->44 46 Document exploit detected (process start blacklist hit) 8->46 48 Document exploit detected (UrlDownloadToFile) 8->48 13 rundll32.exe 8->13         started        file5 signatures6 process7 process8 15 rundll32.exe 13->15         started        signatures9 50 Contains functionality to inject code into remote processes 15->50 18 msiexec.exe 2 33 15->18         started        process10 dnsIp11 28 gadgetswolf.com 104.21.44.135, 443, 49167 CLOUDFLARENETUS United States 18->28 30 homesoapmolds.com 104.21.60.169, 443, 49168 CLOUDFLARENETUS United States 18->30 32 govemedico.tk 172.67.158.184, 443, 49169 CLOUDFLARENETUS United States 18->32 22 C:\Users\user\AppData\Roaming\...\koav.dll, PE32 18->22 dropped file12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/440496a116ae475c19a8a00af2b51c05c6a62040c4ec556fc7e7788682962be6/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iqcjniiwvzdvygniuafpfni4axdkmicaytwfk36h454inauwfpta._file
Result
Malware family:
zloader
Create hunting rule
Score:
  10/10
Tags:
family:zloader botnet:kev campaign:26/01 botnet ransomware trojan
Link:
https://tria.ge/reports/210126-7d9znww1ts/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious use of FindShellTrayWindow
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Process spawned unexpected child process
Zloader, Terdot, DELoader, ZeusSphinx
Malware Config
C2 Extraction:
https://gadgetswolf.com/post.php
https://homesoapmolds.com/post.php
https://govemedico.tk/post.php
Dropper Extraction:
https://coopacaustro.com/kev/scfrd.dll
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/440496a116ae475c19a8a00af2b51c05c6a62040c4ec556fc7e7788682962be6

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
Rule name:win_zloader_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

ZLoader

Excel file xls 440496a116ae475c19a8a00af2b51c05c6a62040c4ec556fc7e7788682962be6

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments