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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cdd7f92b94aa50edb4dd46f7a31faa765dcac8bfe641ccb6053851b4ae649f28. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments

SHA256 hash: cdd7f92b94aa50edb4dd46f7a31faa765dcac8bfe641ccb6053851b4ae649f28
SHA3-384 hash: 35c23b3b7d0a6c36c8b079198e457583bfb44aae7b2e4c94e2edb174c7a5b5e79a53c7f1df7a68e744bf8bcb36a483fe
SHA1 hash: 975307366120d48854b4ef3ba3c9fea5b865d8cd
MD5 hash: d5559cc7515ebc4559dc2bd67efa624e
humanhash: football-red-eleven-orange
File name:44307.xlsm
Download: download sample
Signature Dridex
File size:134'592 bytes
First seen:2021-12-01 22:08:31 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 3072:IcZA7q9/F1M16TguaNTLGmtLUGSN/tpA/KAhqf8ZI2d4h:I7+i+kLGmxipuKA0fodW
TLSH T1D5D3022E0BB2E809CF73947C845D0B537363D80A94D26B13F6A5A58C61D3FB322E56D9
Reporter GovCERT_CH
Tags:Dridex xlsm

Intelligence


File Origin
# of uploads :
1
# of downloads :
257
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
44307.xlsm
Verdict:
No threats detected
Analysis date:
2021-12-01 22:12:51 UTC
Tags:
macros40

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.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
False
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Creating a file
Creating a process with a hidden window
Launching a process
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Excel4Macro
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros-on-open mshta stripped
Result
Threat name:
Hidden Macro 4.0 Dridex Downloader
Detection:
malicious
Classification:
troj.expl.evad
Score:
92 / 100
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 obfuscated Excel 4.0 Macro
Found protected and hidden Excel 4.0 Macro sheet
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Suspicious MSHTA Process Patterns
Sigma detected: TA505 Dropper Load Pattern
Yara detected Dridex Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 532276 Sample: 44307.xlsm Startdate: 01/12/2021 Architecture: WINDOWS Score: 92 29 Sigma detected: TA505 Dropper Load Pattern 2->29 31 Yara detected Dridex Downloader 2->31 33 Contains functionality to create processes via WMI 2->33 35 6 other signatures 2->35 7 EXCEL.EXE 26 23 2->7         started        11 WmiPrvSE.exe 2->11         started        process3 file4 21 C:\Users\user\Desktop\~$44307.xlsm, data 7->21 dropped 23 C:\Users\user\Desktop\44307.xlsm (copy), Microsoft 7->23 dropped 25 C:\ProgramData\zZHfqaXLaCkkcT.rtf, HTML 7->25 dropped 37 Creates and opens a fake document (probably a fake document to hide exploiting) 7->37 13 WMIC.exe 1 7->13         started        16 mshta.exe 11->16         started        signatures5 process6 dnsIp7 39 Creates processes via WMI 13->39 19 conhost.exe 13->19         started        27 157.230.250.107, 49808, 8080 DIGITALOCEAN-ASNUS United States 16->27 signatures8 process9
Threat name:
Document-Excel.Downloader.EncDoc
Status:
Malicious
First seen:
2021-12-01 22:09:10 UTC
File Type:
Document
Extracted files:
18
AV detection:
18 of 28 (64.29%)
Threat level:
  3/5
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
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Blocklisted process makes network request
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.

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:BitcoinAddress
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Microsoft_XLSX_with_Macrosheet
Rule name:Microsoft_XLSX_with_Macrosheet

File information


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

Malspam

Dridex

Excel file xlsm cdd7f92b94aa50edb4dd46f7a31faa765dcac8bfe641ccb6053851b4ae649f28

(this sample)

  
Dropped by
Dridex
  
Delivery method
Distributed via e-mail attachment

Comments