MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3. 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


SilentBuilder


Vendor detections: 12


Maldoc score: 7


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3
SHA3-384 hash: 3f02155a7602e56521e5e1e896d3aef3c63bf1ed5b0cad3acf4d0402ff1d0d65b2c5751bdab1bea358eac65a8da1db85
SHA1 hash: 22713f4a60918ae692d2748695cf12a155cfb46f
MD5 hash: 345efd07b52c8b30c3d9496fedd278b1
humanhash: lion-undress-lima-three
File name:Fakturierung 2022.25.03_0755.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:237'568 bytes
First seen:2022-03-25 07:01:02 UTC
Last seen:2022-03-25 08:41:19 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:EKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgVeBs8wfvqs2HjzfGsK9YpQ1+3/:7+oi3HGsKmq1+3/
TLSH T16234F188B62EC919E8168B354DD7C7DB7721FC114F1643473286B35E3FFAAA09A07246
Reporter lowmal3
Tags:SilentBuilder 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
Maldoc score: 7
OLE dump

MalwareBazaar was able to identify 13 sections in this file using oledump:

Section IDSection sizeSection name
1103 bytesCompObj
2324 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4219257 bytesWorkbook
5630 bytes_VBA_PROJECT_CUR/PROJECT
6101 bytes_VBA_PROJECT_CUR/PROJECTwm
73538 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
8834 bytes_VBA_PROJECT_CUR/VBA/dir
91938 bytes_VBA_PROJECT_CUR/VBA/1
10998 bytes_VBA_PROJECT_CUR/VBA/2
11998 bytes_VBA_PROJECT_CUR/VBA/3
12998 bytes_VBA_PROJECT_CUR/VBA/4
131002 bytes_VBA_PROJECT_CUR/VBA/
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
AutoExecAuto_OpenRuns when the Excel Workbook is opened
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)
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
2
# of downloads :
194
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/257519/
Detection(s):
TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.BITSADMIN.EXE.200327.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.URLDOWNLOADTOFILE.200415.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTPS
Create hunting rule

TwinWave.EvilDoc.XLSLOLBINHammerToFall.20201218.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20220215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Query of malicious DNS domain
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros macros-on-open regsvr32 regsvr32.exe
Link:
https://www.filescan.io/uploads/623d68cfa19c6494128c2dbb/reports/589fb21b-6d1c-451c-b6e6-d7bec507f4ba/overview
Label:
Malicious
Suspicious Score:
7.3/10
Score Malicious:
73%
Score Benign:
27%
Link:
https://www.malware.ai/gui/files/?id=32d5f7fe-d5ac-4c13-9dbc-683e428af6cb
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0 Emotet
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/964394
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Drops PE files to the user root directory
Found Excel 4.0 Macro with suspicious formulas
Found malicious Excel 4.0 Macro
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
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
Sigma detected: Regsvr32 Command Line Without DLL
Sigma detected: Regsvr32 Network Activity
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Yara detected Emotet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 596872 Sample: Fakturierung 2022.25.03_0755.xls Startdate: 25/03/2022 Architecture: WINDOWS Score: 100 49 129.232.188.93 xneeloZA South Africa 2->49 51 185.8.212.130 UZINFOCOMUZ Uzbekistan 2->51 53 53 other IPs or domains 2->53 67 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->67 69 Multi AV Scanner detection for domain / URL 2->69 71 Found malware configuration 2->71 73 14 other signatures 2->73 13 EXCEL.EXE 147 23 2->13         started        signatures3 process4 dnsIp5 61 colfincas.com 199.201.88.132, 443, 49165 VPSDATACENTERUS United States 13->61 63 www.colfincas.com 13->63 43 C:\Users\user\csei.dll, PE32 13->43 dropped 45 C:\...\YXspklXFrSJBE1S72f9YD94nhQXW[1].dll, PE32 13->45 dropped 47 C:\Users\...\Fakturierung 2022.25.03_0755.xls, Composite 13->47 dropped 85 Document exploit detected (creates forbidden files) 13->85 87 Document exploit detected (UrlDownloadToFile) 13->87 18 regsvr32.exe 2 13->18         started        file6 signatures7 process8 file9 41 C:\Windows\SysWOW64\...\whfewskw.ogu (copy), PE32 18->41 dropped 75 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->75 22 regsvr32.exe 1 18->22         started        signatures10 process11 signatures12 77 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->77 25 regsvr32.exe 1 22->25         started        process13 signatures14 81 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->81 28 regsvr32.exe 1 25->28         started        process15 signatures16 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->83 31 regsvr32.exe 1 28->31         started        process17 signatures18 89 Hides that the sample has been downloaded from the Internet (zone.identifier) 31->89 34 regsvr32.exe 1 31->34         started        process19 signatures20 65 Hides that the sample has been downloaded from the Internet (zone.identifier) 34->65 37 regsvr32.exe 2 34->37         started        process21 dnsIp22 55 70.36.102.35, 443, 49166 PERFECT-INTERNATIONALUS United States 37->55 57 51.91.76.89, 49170, 8080 OVHFR France 37->57 59 92.240.254.110, 8080 LIGHTSTORM-COMMUNICATIONS-SRO-SK-ASPeeringsSK Slovakia (SLOVAK Republic) 37->59 79 System process connects to network (likely due to code injection or exploit) 37->79 signatures23
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3/
Threat name:
Win32.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-03-25 07:02:35 UTC
File Type:
Document
Extracted files:
26
AV detection:
7 of 42 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5mbelxutdvt6dasagz7bx2ebd2q2tmjvjyozimwk4g2qzvced3bq._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch4 banker macro trojan xlm
Link:
https://tria.ge/reports/220325-htazxsfggr/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in System32 directory
Loads dropped DLL
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
Malware Config
C2 Extraction:
70.36.102.35:443
92.240.254.110:8080
51.91.76.89:8080
217.182.25.250:8080
119.193.124.41:7080
45.142.114.231:8080
176.56.128.118:443
51.254.140.238:7080
173.212.193.249:8080
131.100.24.231:80
188.44.20.25:443
1.234.2.232:8080
153.126.146.25:7080
51.91.7.5:8080
151.106.112.196:8080
46.55.222.11:443
107.182.225.142:8080
82.165.152.127:8080
212.237.17.99:8080
195.201.151.129:8080
197.242.150.244:8080
103.43.46.182:443
206.188.212.92:8080
196.218.30.83:443
5.9.116.246:8080
185.157.82.211:8080
176.104.106.96:8080
159.65.88.10:8080
212.24.98.99:8080
209.250.246.206:443
45.118.135.203:7080
50.116.54.215:443
178.79.147.66:8080
72.15.201.15:8080
101.50.0.91:8080
103.75.201.2:443
31.24.158.56:8080
146.59.226.45:443
110.232.117.186:8080
138.185.72.26:8080
45.176.232.124:443
189.126.111.200:7080
129.232.188.93:443
158.69.222.101:443
164.68.99.3:8080
209.126.98.206:8080
58.227.42.236:80
203.114.109.124:443
195.154.133.20:443
192.99.251.50:443
1.234.21.73:7080
50.30.40.196:8080
216.158.226.206:443
185.8.212.130:7080
159.8.59.82:8080
45.118.115.99:8080
167.99.115.35:8080
79.172.212.216:8080
Dropper Extraction:
https://www.colfincas.com/tmp/FvyLs/
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/eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3

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
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Excel_Hidden_Macro_Sheet
Create hunting rule
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:Qbot
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule to Detect Qbot
Rule name:SUSP_Excel4Macro_AutoOpen
Create hunting rule
Author:John Lambert @JohnLaTwC
Description:Detects Excel4 macro use with auto open / close

File information

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

Malspam

SilentBuilder

Excel file xls eb0245de931d67e18240367e1be8811ea1a9b1354e1d9432cae1b50cd4441ec3

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/257519/

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