MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11. 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: 5


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

SHA256 hash: eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11
SHA3-384 hash: ddef993d1c4fc232ad1acf349f07d2fa4850f39d791ff6a11b79f5d48cf9b8ed7a2fc50a76fbeb1f0882cf3d15b5d742
SHA1 hash: 54be68af2b4b0afcbba6e2212f4dc797b68e67bf
MD5 hash: 2e3e9b8786edd8d43f7812ba2af30ba0
humanhash: aspen-quiet-comet-utah
File name:FQ18717278796.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:103'733 bytes
First seen:2022-01-22 18:03:51 UTC
Last seen:2022-01-24 15:32:25 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:n/k3hbdlylKsgqopeJBWhZFGkE+cL2NdAFxe53lGvFTQ3IzxgdrvxpU0OKvMB:/k3hbdlylKsgqopeJBWhZFVE+W2NdAOK
TLSH T1B6A3B0527BC6CA59EA4547710DBB024AA723FC105B7A63473285F3783FB89E08D13A1B
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: 5
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
392200 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)
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
2
# of downloads :
496
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FQ18717278796.xls
Verdict:
Malicious activity
Analysis date:
2022-01-22 19:05:09 UTC
Tags:
macros macros40 loader trojan
Link:
https://app.any.run/tasks/15a2aabf-4dd0-42f6-9259-bfd7e82caa57

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:
n/a
Link:
https://www.capesandbox.com/analysis/221670/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.47707798.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.MSHTA.210816.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP
Create hunting rule

TwinWave.EvilDoc.Emotet46and2.20220119.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd cmd.exe macros macros-on-open mshta mshta.exe stripped
Link:
https://www.filescan.io/uploads/61ec471f0f8c757253da2f63/reports/1e28ba6b-9ecc-44d9-b3d7-86a802dd1df3/overview
Label:
Malicious
Suspicious Score:
5.9/10
Score Malicious:
6%
Score Benign:
4%
Link:
https://www.malware.ai/gui/files/?id=784892b0-1577-44ff-88b4-c85774b78924
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11
Details
Excel 4.0 Macro
Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.
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
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/925708
Signature
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Found Excel 4.0 Macro with suspicious formulas
Hides that the sample has been downloaded from the Internet (zone.identifier)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: MSHTA Spawning Windows Shell
Sigma detected: Suspicious MSHTA Process Patterns
Sigma detected: Suspicious PowerShell Command Line
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)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 558184 Sample: FQ18717278796.xls Startdate: 22/01/2022 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->55 57 Multi AV Scanner detection for domain / URL 2->57 59 Antivirus detection for URL or domain 2->59 61 11 other signatures 2->61 14 EXCEL.EXE 53 12 2->14         started        process3 file4 47 C:\Users\user\Desktop\FQ18717278796.xls, Composite 14->47 dropped 67 Obfuscated command line found 14->67 18 cmd.exe 14->18         started        signatures5 process6 process7 20 mshta.exe 11 18->20         started        dnsIp8 49 185.7.214.7, 49165, 49166, 80 DELUNETDE France 20->49 23 powershell.exe 12 7 20->23         started        process9 dnsIp10 51 clearph.flywheelsites.com 151.101.130.159, 49167, 80 FASTLYUS United States 23->51 45 C:\Users\Public\Documents\ssd.dll, PE32 23->45 dropped 65 Powershell drops PE file 23->65 28 cmd.exe 23->28         started        file11 signatures12 process13 process14 30 rundll32.exe 28->30         started        process15 32 rundll32.exe 2 30->32         started        file16 43 C:\Windows\...\qqdqcfzvjftzlk.zfh (copy), PE32 32->43 dropped 53 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->53 36 rundll32.exe 32->36         started        signatures17 process18 process19 38 rundll32.exe 1 36->38         started        signatures20 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 38->63 41 rundll32.exe 38->41         started        process21
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-01-22 18:04:15 UTC
File Type:
Document
Extracted files:
9
AV detection:
13 of 43 (30.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=53r5odxq5nayezgbab23samelmexff3bgy3yslx3o6xmwi3mlyiq._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/220122-wnlfcscdg8/
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 AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in System32 directory
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
Malware Config
C2 Extraction:
131.100.24.231:80
209.59.138.75:7080
103.8.26.103:8080
51.38.71.0:443
212.237.17.99:8080
79.172.212.216:8080
207.38.84.195:8080
104.168.155.129:8080
178.79.147.66:8080
46.55.222.11:443
103.8.26.102:8080
192.254.71.210:443
45.176.232.124:443
203.114.109.124:443
51.68.175.8:8080
58.227.42.236:80
45.142.114.231:8080
217.182.143.207:443
178.63.25.185:443
45.118.115.99:8080
103.75.201.2:443
104.251.214.46:8080
158.69.222.101:443
81.0.236.90:443
45.118.135.203:7080
176.104.106.96:8080
212.237.56.116:7080
216.158.226.206:443
173.212.193.249:8080
50.116.54.215:443
138.185.72.26:8080
41.76.108.46:8080
212.237.5.209:443
107.182.225.142:8080
195.154.133.20:443
162.214.50.39:7080
110.232.117.186:8080
Dropper Extraction:
http://0xb907d607/fer/fe3.html
http://185.7.214.7/fer/fe3.png
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/eee3d70ef0eb/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/eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11

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: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 eee3d70ef0eb418264c10075b901845b097297613637892efb77aecb236c5e11

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/221670/

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