MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5. 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: 14


Maldoc score: 10


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5
SHA3-384 hash: 73543a5af56d234da6b403573034f4489bedf4cffc514cf464bea9d299939449cb68d81230ecdb491b8694b16a1df0f8
SHA1 hash: d4eb5a951c3666b24f9c175f0e505f2bfc49e4eb
MD5 hash: 3035cbb811f7a4f35dbb14a1d91f0336
humanhash: triple-alaska-tango-twenty
File name:6914253729658226499_1.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:97'280 bytes
First seen:2022-07-06 08:10:51 UTC
Last seen:2022-07-06 11:04:34 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:PFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgmHuS4hcTO97v7UYdEJmpM:tKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgK
TLSH T1EE934945B759DA5EF621833148E787AA7333FC204F6B47472228B3257FB99A04B0721B
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
386711 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 :
6
# of downloads :
228
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
NOX001428651094607_202207061413.zip
Verdict:
Suspicious activity
Analysis date:
2022-07-06 07:15:17 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/51258fb6-ccfb-48d9-8d0f-f73c6b173313

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:
True
Detection(s):
SecuriteInfo.com.XLM.Trojan.Abracadabra.8.Gen.14039.5043.UNOFFICIAL
Create hunting rule

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
Creating a window
Сreating synchronization primitives
DNS request
Creating a process with a hidden window
Creating a file
Launching a process
Moving a recently created file
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5/results/dashboard
Payload URLs
URL
File name
charliecaper.com
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware macros macros-on-open packed regsvr32
Link:
https://www.filescan.io/uploads/62c5439b11764e36f81a030e/reports/4437e9b2-ccd2-4bc0-a4bd-8aaa87b139be/overview
Label:
Malicious
Suspicious Score:
5.9/10
Score Malicious:
6%
Score Benign:
4%
Link:
https://www.malware.ai/gui/files/?id=e772d4d3-ce49-4038-b5c1-5121dc299c4a
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1025437
Signature
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Found Excel 4.0 Macro with suspicious formulas
Found malicious Excel 4.0 Macro
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)
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-07-06 03:23:02 UTC
File Type:
Document
Extracted files:
11
AV detection:
25 of 40 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=o3dtfib5ilig2vyfvxz2oxy65fqjwwu6htn6t2bxo3lduxjs6tkq._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch4 banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220706-j29c5aaeap/
Behaviour
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
Checks processor information in registry
Enumerates system info in registry
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:
94.23.45.86:4143
209.97.163.214:443
212.24.98.99:8080
103.43.75.120:443
183.111.227.137:8080
197.242.150.244:8080
129.232.188.93:443
159.65.88.10:8080
163.44.196.120:8080
51.161.73.194:443
164.90.222.65:443
159.89.202.34:443
1.234.2.232:8080
150.95.66.124:8080
51.91.76.89:8080
196.218.30.83:443
5.9.116.246:8080
146.59.226.45:443
173.212.193.249:8080
213.241.20.155:443
213.239.212.5:443
207.148.79.14:8080
51.254.140.238:7080
45.235.8.30:8080
147.139.166.154:8080
64.227.100.222:8080
82.165.152.127:8080
172.105.226.75:8080
131.100.24.231:80
206.189.28.199:8080
151.106.112.196:8080
119.193.124.41:7080
45.176.232.124:443
79.137.35.198:8080
186.194.240.217:443
103.70.28.102:8080
159.65.140.115:443
104.168.155.143:8080
45.118.115.99:8080
115.68.227.76:8080
72.15.201.15:8080
144.202.108.116:8080
37.187.115.122:8080
110.232.117.186:8080
209.126.98.206:8080
172.104.251.154:8080
82.223.21.224:8080
101.50.0.91:8080
103.132.242.26:8080
201.94.166.162:443
185.4.135.165:8080
160.16.142.56:8080
107.170.39.149:8080
134.122.66.193:8080
139.59.126.41:443
149.56.131.28:8080
91.207.28.33:8080
164.68.99.3:8080
188.44.20.25:443
103.75.201.2:443
167.172.253.162:8080
158.69.222.101:443
153.126.146.25:7080
146.59.151.250:443
49.231.16.102:8080
162.243.103.246:8080
165.227.166.238:8080
104.248.155.133:443
144.217.88.125:443
161.97.68.105:8080
131.100.24.199:4143
217.79.180.211:8080
104.236.40.81:443
69.63.64.48:8080
34.85.105.209:8080
51.91.142.26:443
34.80.191.247:7080
144.91.92.120:8080
1.234.21.73:8080
201.73.143.120:8080
45.226.53.34:443
136.243.32.168:443
167.172.248.70:8080
45.93.136.110:8080
138.197.68.35:8080
Dropper Extraction:
http://charliecaper.com/wp-includes/Q8IU0ksWg0/
http://che-fare.com/che-fare-media/rPI4ln2WQ7IyznRle/
https://pccurico.cl/wp-admin/9XR3XWZGidfKVYYzW/
http://ftp.yourbankruptcypartner.com/wp-content/HjSaWCEgzhi6CZS/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/76c732a03d42/report/overview.html
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/76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5

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: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 76c732a03d42d06d5705adf3a75f1ee9609b5a9e3cdbe9e83776d63a5d32f4d5

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments