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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd. 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


Dridex


Vendor detections: 7


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

SHA256 hash: defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd
SHA3-384 hash: c3fdfed49dddbca349b4bc6811c7919243b9bcf5f1e1f8e6f8d927975111edf6fdd533e77fcbf45bd1ccabe94aca5894
SHA1 hash: 12083f3f5c5e28b5949b74cd09fcb6ed269b0772
MD5 hash: 32cf28db14032003866f66e7d7af29a8
humanhash: vermont-mirror-cat-music
File name:Termination letter-30471.xlsb
Download: download sample
Signature Dridex
Create hunting rule
File size:64'532 bytes
First seen:2021-11-21 17:02:47 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:1Wz0WycApYOvzPqrE3gpMokPF58Ik4kosQFVvSuMMFCeA0:wzbRlEwFkd58IXkOFVvMM4en
TLSH T1F6530207CF4DB899C5FE00BD429EAFF1918F576CDF40E18F35D4920898522A7C78A52A
Reporter cocaman
Tags:Dridex INVOICE xlsb xlsx


Avatar
cocaman
Malicious email (T1566.001)
From: "Tax Preparer <tax.preparer@invoice.zetran.com>" (likely spoofed)
Received: "from postfix-inbound-v2-6.inbound.mailchannels.net (inbound-egress-6.mailchannels.net [199.10.31.238]) "
Date: "Mon, 15 Nov 2021 18:13:20 GMT"
Subject: "Employee termination announcement 30471"
Attachment: "Termination letter-30471.xlsb"

Intelligence

File Origin
# of uploads :
1
# of downloads :
173
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Termination letter-30471.xlsb
Verdict:
No threats detected
Analysis date:
2021-11-21 17:15:22 UTC
Tags:
macros40
Link:
https://app.any.run/tasks/b844e5c6-8d70-48e4-9cf9-906630365e76

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/octet-stream
Has a screenshot:
False
Contains macros:
False
Gathering data
Detection(s):
TwinWave.EvilDoc.XL4SilentYoGotMe.20210520.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MDridexYourStringShilouette.20211115.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MDridexRunningDownTheDream.20211115.UNOFFICIAL
Create hunting rule

securiteinfo.com.xls4.icedid.42146.12007.16787.UNOFFICIAL
Create hunting rule

securiteinfo.com.xls4.icedid.42146.24744.28531.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Excel4Macro
Link:
https://app.docguard.net/defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
mshta
Link:
https://www.filescan.io/uploads/619a7bcadd04e7d00e010d1b/reports/4f272a27-16c5-420d-b731-ae9e369896f7/overview
Result
Threat name:
Hidden Macro 4.0
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/893392
Signature
Contains functionality to create processes via WMI
Creates and opens a fake document (probably a fake document to hide exploiting)
Creates processes via WMI
Document exploit detected (process start blacklist hit)
Found Excel 4.0 Macro with suspicious formulas
Found malicious Excel 4.0 Macro
Found protected and hidden Excel 4.0 Macro sheet
Multi AV Scanner detection for submitted file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 525871 Sample: Termination letter-30471.xlsb Startdate: 21/11/2021 Architecture: WINDOWS Score: 84 23 Multi AV Scanner detection for submitted file 2->23 25 Found malicious Excel 4.0 Macro 2->25 27 Contains functionality to create processes via WMI 2->27 29 5 other signatures 2->29 6 EXCEL.EXE 8 10 2->6         started        10 mshta.exe 9 2->10         started        12 mshta.exe 9 2->12         started        process3 file4 19 C:\Users\...\~$Termination letter-30471.xlsb, data 6->19 dropped 21 C:\ProgramData\fnsfunsfgrgnkjfsgnd.rtf, HTML 6->21 dropped 31 Creates and opens a fake document (probably a fake document to hide exploiting) 6->31 14 WMIC.exe 6->14         started        17 WMIC.exe 6->17         started        signatures5 process6 signatures7 33 Creates processes via WMI 14->33
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd/
Threat name:
Document-Excel.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-11-16 18:08:46 UTC
File Type:
Document
Extracted files:
20
AV detection:
10 of 45 (22.22%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=335ul442jhkxtfd7b55iyp2o54n52tdxsr5e47sivntmz4tz5g6q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro xlm
Link:
https://tria.ge/reports/211121-vkn7eahbe2/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd

File information

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

Malspam

Dridex

Excel file xlsx defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropping
Dridex
Cape
Cape
https://www.capesandbox.com/analysis/207960/

Comments