MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 75b17173c223c1629c86b1ca47aae96bdbad0c65ec06195167dced1aa64e526f. 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: 4


Intelligence 13 IOCs YARA 1 File information Comments

SHA256 hash: 75b17173c223c1629c86b1ca47aae96bdbad0c65ec06195167dced1aa64e526f
SHA3-384 hash: c78da7f47116cfea83caf76089c77092217054e4c70945b6992fcd00e31d0b32eda0158eb22e6a8afaa4cc7612f2c07f
SHA1 hash: 491b1ce00a41214f02e6305bd1a91ccf3f20e666
MD5 hash: b4b067eca2dde355a4da071e2c364465
humanhash: mars-autumn-rugby-network
File name:message 1506.xls
Download: download sample
Signature SilentBuilder
File size:61'952 bytes
First seen:2022-06-15 10:47:30 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:NpKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgUDOJiA6Cv/UGLI36yOAR5N:rKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgo
TLSH T19E533A56BA5AD81DF915C73548D74BAAA323FC314F9B0B832269B3106FFC8A0561714F
TrID 80.2% (.XLS) Microsoft Excel sheet (32500/1/3)
19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter madjack_red
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: 4
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
351826 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
SuspiciousURLDownloadToFileAMay download files from the Internet
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence


File Origin
# of uploads :
1
# of downloads :
313
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Creating a process with a hidden window
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Payload URLs
URL
File name
www.valyval.com
WorkBook
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware macros macros-on-open packed regsvr32
Label:
Benign
Suspicious Score:
2.1/10
Score Malicious:
21%
Score Benign:
79%
Result
Verdict:
MALICIOUS
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
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
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
Behaviour
Behavior Graph:
Threat name:
Document-Excel.Trojan.Abracadabra
Status:
Malicious
First seen:
2022-06-15 10:48:08 UTC
File Type:
Document
Extracted files:
9
AV detection:
18 of 41 (43.90%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:emotet botnet:epoch5 banker macro suricata trojan xlm
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
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:
175.126.176.79:8080
188.225.32.231:4143
64.227.55.231:8080
87.106.97.83:7080
167.86.75.145:443
103.41.204.169:8080
88.217.172.165:8080
178.62.112.199:8080
165.232.185.110:8080
54.37.228.122:443
202.29.239.162:443
37.44.244.177:8080
139.196.72.155:8080
157.245.111.0:8080
36.67.23.59:443
190.145.8.4:443
103.254.12.236:7080
202.134.4.210:7080
190.107.19.179:443
165.22.254.236:8080
198.199.70.22:8080
118.98.72.86:443
78.47.204.80:443
85.25.120.45:8080
128.199.242.164:8080
116.124.128.206:8080
195.77.239.39:8080
54.37.106.167:8080
46.101.98.60:8080
103.71.99.57:8080
93.104.209.107:8080
210.57.209.142:8080
103.56.149.105:8080
103.224.241.74:8080
103.126.216.86:443
85.214.67.203:8080
103.85.95.4:8080
104.248.225.227:8080
157.230.99.206:8080
196.44.98.190:8080
37.187.114.15:8080
68.183.91.111:8080
62.171.178.147:8080
128.199.217.206:443
104.244.79.94:443
202.28.34.99:8080
Dropper Extraction:
http://www.valyval.com/pun/VAYL/
http://cabans.com/CeudWYRQEzZgrHPcI/
http://calzadoyuyin.com/cgj-bin/jZPff/
http://cagranus.com/slide/mcqAFuMhaekn/
Please note that we are no longer able to provide a coverage score for Virus Total.

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

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments