MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 63a2b87a8eb25ec9fda56831145e6d3e76a4b5e98fe99a47a6669fa4dad4c561. 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: 11


Maldoc score: 10


Intelligence 11 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 63a2b87a8eb25ec9fda56831145e6d3e76a4b5e98fe99a47a6669fa4dad4c561
SHA3-384 hash: 1d745ee2f1161ead7fbab2fb22ef9833a80b9c909009073dcaa645ff82af8791dfb461366b697d65275c10d9c0a80789
SHA1 hash: 4bcb6bddfb793af241eba62bee691dbb113591cf
MD5 hash: 14f66a3bd2c0c1a4f614379e6d505315
humanhash: oscar-blue-double-fruit
File name:98219RROF_0407.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:97'280 bytes
First seen:2022-07-04 09:27:04 UTC
Last seen:2022-07-04 11:16:43 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:iFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgYHuS4hcTO97v7UYdEJmFB2:cKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgk
TLSH T16B934A45B65ADA1EF525873148E787A67333FC304F6B47472224B3267FB99A04B0721B
TrID 80.2% (.XLS) Microsoft Excel sheet (32500/1/3)
19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter TeamDreier
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: 10
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
386542 bytesWorkbook
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
Hex StringSegWT5365675754
Hex StringV4cG56346347
Hex StringGgWG47675747
Hex StringgGGE67474745
Hex StringxXWd78585764
Hex StringE64R45363452
SuspiciousWindowsMay enumerate application windows (if combined with Shell.Application object)
SuspiciousURLDownloadToFileAMay download files from the Internet
SuspiciousEXECMay run an executable file or a system
SuspiciousHex StringsHex-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 :
229
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Badmacro.Xls.encdl.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.SHELLEXECUTE.200416.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.SHELLEXECUTE.200524.UNOFFICIAL
Create hunting rule

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

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

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

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.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
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
DNS request
Creating a file
Creating a process with a hidden window
Launching a process
Moving a recently created file
Sending a custom TCP request by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/63a2b87a8eb25ec9fda56831145e6d3e76a4b5e98fe99a47a6669fa4dad4c561/results/dashboard
Payload URLs
URL
File name
educacionsanvicentefundacion.com
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware keylogger macros macros-on-open packed regsvr32
Link:
https://www.filescan.io/uploads/62c2b2dedd037e27032e76d3/reports/c21bdb1a-cabf-401d-b420-4bef4477272e/overview
Label:
Benign
Suspicious Score:
3.6/10
Score Malicious:
36%
Score Benign:
64%
Link:
https://www.malware.ai/gui/files/?id=7502ee34-5cb9-48fc-a509-2dabe1ebbe14
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/63a2b87a8eb25ec9fda56831145e6d3e76a4b5e98fe99a47a6669fa4dad4c561
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/1024046
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
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses ipconfig to lookup or modify the Windows network settings
Yara detected Emotet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 656549 Sample: 98219RROF_0407.xls Startdate: 04/07/2022 Architecture: WINDOWS Score: 100 53 103.224.241.74 WEBWERKS-AS-INWebWerksIndiaPvtLtdIN India 2->53 55 202.29.239.162 UNINET-AS-APUNINET-TH Thailand 2->55 57 44 other IPs or domains 2->57 75 Snort IDS alert for network traffic 2->75 77 Multi AV Scanner detection for domain / URL 2->77 79 Antivirus detection for URL or domain 2->79 81 10 other signatures 2->81 9 EXCEL.EXE 7 22 2->9         started        signatures3 process4 dnsIp5 65 gedebey-tvradio.info 31.22.4.120, 49176, 80 WILDCARD-ASWildcardUKLimitedGB United Kingdom 9->65 67 haircutbar.com 198.98.48.208, 49175, 80 PONYNETUS United States 9->67 69 2 other IPs or domains 9->69 39 C:\Users\user\uoya4.ocx, PE32+ 9->39 dropped 41 C:\Users\user\uoya3.ocx, PE32+ 9->41 dropped 43 C:\Users\user\uoya1.ocx, PE32+ 9->43 dropped 45 4 other malicious files 9->45 dropped 85 Document exploit detected (creates forbidden files) 9->85 87 Document exploit detected (UrlDownloadToFile) 9->87 14 regsvr32.exe 2 9->14         started        18 regsvr32.exe 2 9->18         started        20 regsvr32.exe 2 9->20         started        22 regsvr32.exe 9->22         started        file6 signatures7 process8 file9 47 C:\Windows\...\cvluOTjmoXj.dll (copy), PE32+ 14->47 dropped 89 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->89 24 regsvr32.exe 14 14->24         started        49 C:\Windows\System32\...\tAAAqzK.dll (copy), PE32+ 18->49 dropped 91 Uses ipconfig to lookup or modify the Windows network settings 18->91 28 regsvr32.exe 2 18->28         started        51 C:\Windows\...\lAxmyhclVyu.dll (copy), PE32+ 20->51 dropped 30 regsvr32.exe 20->30         started        signatures10 process11 dnsIp12 59 159.65.163.220, 443, 49182 DIGITALOCEAN-ASNUS United States 24->59 83 System process connects to network (likely due to code injection or exploit) 24->83 32 systeminfo.exe 1 24->32         started        35 ipconfig.exe 24->35         started        37 nltest.exe 24->37         started        61 174.138.33.49, 49177, 49179, 49180 DIGITALOCEAN-ASNUS United States 28->61 63 188.165.79.151, 443, 49183 OVHFR France 30->63 signatures13 process14 signatures15 71 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 32->71 73 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 32->73
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/63a2b87a8eb25ec9fda56831145e6d3e76a4b5e98fe99a47a6669fa4dad4c561/
Threat name:
Document-Office.Trojan.Abracadabra
Create hunting rule
Status:
Malicious
First seen:
2022-07-04 09:28:05 UTC
File Type:
Document
Extracted files:
11
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=morlq6uowjpmt7nfnayrixtnhz3kjnpjr7uzur5gm2p2jwwuyvqq._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch5 banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220704-lfbk3sgahq/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Gathers network information
Gathers system information
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Loads dropped DLL
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
suricata: ET MALWARE W32/Emotet CnC Beacon 3
Malware Config
C2 Extraction:
103.71.99.57:8080
103.224.241.74:8080
157.245.111.0:8080
37.44.244.177:8080
103.41.204.169:8080
64.227.55.231:8080
103.254.12.236:7080
103.85.95.4:8080
157.230.99.206:8080
165.22.254.236:8080
85.214.67.203:8080
54.37.228.122:443
195.77.239.39:8080
128.199.217.206:443
190.145.8.4:443
165.232.185.110:8080
188.165.79.151:443
178.62.112.199:8080
54.37.106.167:8080
104.244.79.94:443
43.129.209.178:443
87.106.97.83:7080
202.134.4.210:7080
178.238.225.252:8080
198.199.70.22:8080
62.171.178.147:8080
175.126.176.79:8080
128.199.242.164:8080
88.217.172.165:8080
104.248.225.227:8080
85.25.120.45:8080
139.196.72.155:8080
188.225.32.231:4143
202.29.239.162:443
103.126.216.86:443
210.57.209.142:8080
93.104.209.107:8080
196.44.98.190:8080
5.253.30.17:7080
46.101.98.60:8080
103.56.149.105:8080
190.107.19.179:443
139.59.80.108:8080
36.67.23.59:443
78.47.204.80:443
83.229.80.93:8080
174.138.33.49:7080
118.98.72.86:443
37.187.114.15:8080
202.28.34.99:8080
198.27.67.35:8080
180.250.21.2:443
62.141.45.103:443
116.125.120.88:443
159.65.163.220:443
165.227.153.100:8080
58.96.74.42:443
203.217.140.239:443
212.98.224.97:8080
198.211.118.165:443
128.199.93.156:7080
134.209.164.181:8080
190.107.19.180:8080
Dropper Extraction:
https://educacionsanvicentefundacion.com/iplookup/wYEInbaN/
https://www.4monkeys.com/wp-admin/dNAuBEKo/
http://haircutbar.com/cgi-bin/dNfEA5F/
http://gedebey-tvradio.info/wp-includes/T0J9THbd5f2/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/63a2b87a8eb2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

SilentBuilder

Excel file xls 63a2b87a8eb25ec9fda56831145e6d3e76a4b5e98fe99a47a6669fa4dad4c561

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments