MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e1c41059745f8362c945dc9254343f21c1da8766b021911ea04db73f27c2377e. 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: 9


Maldoc score: 7


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e1c41059745f8362c945dc9254343f21c1da8766b021911ea04db73f27c2377e
SHA3-384 hash: c05359f43f6424a2a1fbd572e797b9cf2eb4de44072a2c7cfe009b8dbf0e3067a4a71baa7695df96a15b61e27d155861
SHA1 hash: ec1277331023c466eb4bbc2069af50d40bf2d73c
MD5 hash: 78b93b51616dff957f8f99ba96e310a3
humanhash: oranges-romeo-two-sixteen
File name:Untitled_79644090438.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:76'288 bytes
First seen:2022-03-25 15:52:00 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:1jKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEJvhqkCGKL9l7FNc5eQpzWUepUNUDpK:xKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg4
TLSH T188734C46F799D899E525C7310DAB87B87662EC244B5B07C73206F7B87FB44E06B0321A
Reporter pr0xylife
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 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
365606 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 :
222
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/257746/
Detection(s):
TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.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.XLSLOLBINHammerToFall.20201218.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.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
Sending an HTTP GET request
Sending a custom TCP request by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/e1c41059745f8362c945dc9254343f21c1da8766b021911ea04db73f27c2377e/results/dashboard
Payload URLs
URL
File name
https://cl
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros macros-on-open regsvr32 regsvr32.exe
Link:
https://www.filescan.io/uploads/623de52b9253b276b76df9c7/reports/e0b7d964-d4b6-46eb-bf70-85a2ea46df2c/overview
Label:
Malicious
Suspicious Score:
5.7/10
Score Malicious:
58%
Score Benign:
42%
Link:
https://www.malware.ai/gui/files/?id=d3b8b5d0-1227-442b-8a75-66403ce20845
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/e1c41059745f8362c945dc9254343f21c1da8766b021911ea04db73f27c2377e
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e1c41059745f8362c945dc9254343f21c1da8766b021911ea04db73f27c2377e/
Threat name:
Win32.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-03-25 15:52:15 UTC
File Type:
Document
Extracted files:
10
AV detection:
8 of 41 (19.51%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4hcbawlul6bwfskf3sjfinb7eha5vb3gwaqzchvajw3t6j6cg57a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro xlm
Link:
https://tria.ge/reports/220325-ta4nnshgb7/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Malware Config
Dropper Extraction:
https://cliniquepourenfants.com/css/VHvHW6TUoN/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.46
Link:
https://yomi.yoroi.company/submissions/e1c41059745f8362c945dc9254343f21c1da8766b021911ea04db73f27c2377e

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.

Cape
Cape
https://www.capesandbox.com/analysis/257746/

Comments