MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a. 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


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a
SHA3-384 hash: 33b16c52a1870bf8a540f40f8d79e65c5c2faea766a6622451afa92ff7a626e7a9b8b7c90bc7ae93d955345f35ba7584
SHA1 hash: 91b25cce6d4a8d469508520b67d85e49ecadac60
MD5 hash: 61033b6d9b7e0d6710d903c463d06876
humanhash: eleven-salami-lake-west
File name:IVT-010122 EOEI-240122.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:117'242 bytes
First seen:2022-01-24 14:43:50 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:yW+nBqmsk3hbdlylKsgqopeJBWhZFGkE+cMLxAAIXxe53lGvFTQ3IzxgdrvxpU0S:t+nBqmsk3hbdlylKsgqopeJBWhZFVE+S
TLSH T1A4B3AED767DB0889EF29037A8DB607196763FC615BF363472245B32A6E709C09D03A27
Reporter malware_traffic
Tags:Emotet epoch4 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 dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
3105601 bytesWorkbook

Intelligence

File Origin
# of uploads :
1
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IVT-010122 EOEI-240122.xls
Verdict:
Malicious activity
Analysis date:
2022-01-24 14:00:48 UTC
Tags:
macros macros40 trojan
Link:
https://app.any.run/tasks/4360a3b8-fd20-4232-bd2d-496265fe0035

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/221977/
Detection(s):
SecuriteInfo.com.Heur.20095.29776.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/10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a/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 ping print.exe stripped timeout
Link:
https://www.filescan.io/uploads/61eebb390f8c757253e25e77/reports/5d91668f-0008-4ad2-b144-c34b362d01e5/overview
Label:
Benign
Suspicious Score:
3.9/10
Score Malicious:
39%
Score Benign:
61%
Link:
https://www.malware.ai/gui/files/?id=91672df0-11fd-4024-aca1-c8ada182201f
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-01-24 13:14:31 UTC
File Type:
Document
Extracted files:
8
AV detection:
21 of 43 (48.84%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cdfxz3l6wdzextxn6qrvkn32kmn4ebjowlrocnqut7xj4qkzlnfa._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/220124-r36ydsfae9/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Runs ping.exe
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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/fe5.html
http://185.7.214.7/fer/fe5.png
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/10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a

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.

Malspam

SilentBuilder

Excel file xls 10cb7ced7eb0f24bceedf42355377a531bc2052eb2e2e136149fee9e41595b4a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/221977/

Comments