MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca. 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: 13


Maldoc score: 7


Intelligence 13 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca
SHA3-384 hash: dadf82f2472a1a47f655adcc6b87cf058adc9dc5a9967c86f7c755cc231f42ad1df7e32c688137c3840071df8a187fd9
SHA1 hash: 54cd6e0b660083f72ab91c5a8cd08a28d53502fd
MD5 hash: 681b8c459cf468b843ef6c8543aa2f82
humanhash: seventeen-hawaii-red-echo
File name:681b8c459cf468b843ef6c8543aa2f82
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:109'056 bytes
First seen:2022-03-29 20:03:50 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 3072:jsKpbdrHYrMue8q7QPX+5xtekEdi8/dg+tgSmsCpH/KZuAZGsMT:YKpbdrHYrMue8q7QPX+5xtFEdi8/dgwG
TLSH T11EB39D4BB669D459E923477988EB475A7327FC341F9A47836354F3292FB8CE05A0320B
Reporter zbetcheckin
Tags:excel SilentBuilder xlsx

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 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
398511 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
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 :
1
# of downloads :
303
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/259417/
Detection(s):
SecuriteInfo.com.Macro.Downlader-14.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Macro.Downloader-15.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.Araexe.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.Hidehtt.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.EmotetNoticePicturesOfU.MSOLE2.220314.UNOFFICIAL
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

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
Moving a recently created file
Launching a process
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/4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
coinminer emotet macros macros-on-open regsvr32 regsvr32.exe
Link:
https://www.filescan.io/uploads/624366339253b276b79f3fc8/reports/b12e45d9-94c2-4968-8269-09912e2898aa/overview
Label:
Benign
Suspicious Score:
3.8/10
Score Malicious:
39%
Score Benign:
61%
Link:
https://www.malware.ai/gui/files/?id=aeabbe1a-d44b-4e5a-85a9-6e6affbb4892
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca
Details
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
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/967079
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)
Machine Learning detection for dropped file
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
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: 599573 Sample: Uz8aUxz7gB Startdate: 29/03/2022 Architecture: WINDOWS Score: 100 60 129.232.188.93 xneeloZA South Africa 2->60 62 189.232.46.161 UninetSAdeCVMX Mexico 2->62 64 57 other IPs or domains 2->64 78 Multi AV Scanner detection for domain / URL 2->78 80 Found malware configuration 2->80 82 Antivirus detection for URL or domain 2->82 84 14 other signatures 2->84 15 EXCEL.EXE 7 20 2->15         started        20 svchost.exe 2->20         started        signatures3 process4 dnsIp5 66 fccatinsaat.com 204.11.59.91, 49167, 80 PUBLIC-DOMAIN-REGISTRYUS United States 15->66 68 fabulouswebdesign.net 66.63.190.148, 49168, 80 ASN-QUADRANET-GLOBALUS United States 15->68 52 C:\Users\user\nhth.dll, PE32 15->52 dropped 54 aUVIB0sb6YezRs1ZWFyc9QPD1llYLvOSt[1].dll, PE32 15->54 dropped 56 C:\Users\user\Desktop\Uz8aUxz7gB.xls, Composite 15->56 dropped 72 Document exploit detected (creates forbidden files) 15->72 74 Document exploit detected (UrlDownloadToFile) 15->74 22 regsvr32.exe 2 15->22         started        file6 signatures7 process8 file9 58 C:\Windows\SysWOW64\...\parer.clu (copy), PE32 22->58 dropped 90 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->90 26 regsvr32.exe 1 22->26         started        signatures10 process11 signatures12 94 Hides that the sample has been downloaded from the Internet (zone.identifier) 26->94 29 regsvr32.exe 1 26->29         started        process13 signatures14 96 Hides that the sample has been downloaded from the Internet (zone.identifier) 29->96 32 regsvr32.exe 1 29->32         started        process15 signatures16 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->70 35 regsvr32.exe 1 32->35         started        process17 signatures18 86 Hides that the sample has been downloaded from the Internet (zone.identifier) 35->86 38 regsvr32.exe 1 35->38         started        process19 signatures20 88 Hides that the sample has been downloaded from the Internet (zone.identifier) 38->88 41 regsvr32.exe 1 38->41         started        44 dllhost.exe 38->44         started        process21 signatures22 92 Hides that the sample has been downloaded from the Internet (zone.identifier) 41->92 46 regsvr32.exe 1 41->46         started        process23 signatures24 98 Hides that the sample has been downloaded from the Internet (zone.identifier) 46->98 49 regsvr32.exe 1 46->49         started        process25 signatures26 76 Hides that the sample has been downloaded from the Internet (zone.identifier) 49->76
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-03-29 19:46:55 UTC
File Type:
Document
Extracted files:
11
AV detection:
9 of 42 (21.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jkw4zbt637jry6zyqcfqzp2z7f56zyzaztdcjqsojoz2jso767fa._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/220329-ys9d4aegbq/
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
Drops file in System32 directory
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:
45.176.232.125:443
138.197.109.175:8080
187.84.80.182:443
79.143.187.147:443
189.232.46.161:443
103.70.28.102:8080
134.122.66.193:8080
151.106.112.196:8080
160.16.142.56:8080
212.24.98.99:8080
188.44.20.25:443
197.242.150.244:8080
206.189.28.199:8080
172.104.251.154:8080
103.43.46.182:443
203.114.109.124:443
103.75.201.2:443
58.227.42.236:80
201.94.166.162:443
189.126.111.200:7080
185.8.212.130:7080
167.99.115.35:8080
129.232.188.93:443
1.234.2.232:8080
153.126.146.25:7080
185.157.82.211:8080
131.100.24.231:80
1.234.21.73:7080
192.99.251.50:443
119.193.124.41:7080
159.8.59.82:8080
158.69.222.101:443
51.254.140.238:7080
5.9.116.246:8080
45.176.232.124:443
159.65.88.10:8080
101.50.0.91:8080
107.182.225.142:8080
167.172.253.162:8080
79.172.212.216:8080
50.30.40.196:8080
196.218.30.83:443
51.91.7.5:8080
212.237.17.99:8080
72.15.201.15:8080
183.111.227.137:8080
51.91.76.89:8080
209.250.246.206:443
176.104.106.96:8080
46.55.222.11:443
209.126.98.206:8080
164.68.99.3:8080
176.56.128.118:443
103.132.242.26:8080
110.232.117.186:8080
146.59.226.45:443
173.212.193.249:8080
82.165.152.127:8080
45.118.115.99:8080
216.158.226.206:443
Dropper Extraction:
http://fccatinsaat.com/wp-content/Cw3aR6792f/
http://fabulouswebdesign.net/invoice/m/
http://freemanylaluz.com/downloads/8dR9pgNBFtz/
https://freewebsitedirectory.com/wp-includes/v2qFAlMZELRkxbz/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4aadcc867edf/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/4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca

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:Excel_Hidden_Macro_Sheet
Create hunting rule
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.

Web download

SilentBuilder

Excel file xlsx 4aadcc867edfd31c7b38808b0cbf59f97bece320ccc624c24e4bb3a4c9dff7ca

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2120092/
  
URLhaus
https://urlhaus.abuse.ch/url/2120475/
  
URLhaus
https://urlhaus.abuse.ch/url/2119219/
Cape
Cape
https://www.capesandbox.com/analysis/259417/

Comments


Avatar
zbet commented on 2022-03-29 20:03:54 UTC

url : hxxp://dmcinter.com/certs/RwAJJPUWZe5J8Mxb4Fsy9NxxM8S2/?i=1