MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f6317e6ed0e855867288e906a7cae696ae91d512ff71afbbbb6736123243329c. 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


Maldoc score: 7


Intelligence 12 IOCs YARA 3 File information Comments

SHA256 hash: f6317e6ed0e855867288e906a7cae696ae91d512ff71afbbbb6736123243329c
SHA3-384 hash: 6645a328a51d8486958e5f614971a19907c9b8c88dfdb43814c7240e2537797598959029c98f60a764ea43e128c75bd5
SHA1 hash: 30c78e3224170bbfd3ac9f5ad35287ce20184599
MD5 hash: 44f6691879f1ffcd05fa124fa164acba
humanhash: eighteen-arizona-illinois-coffee
File name:pack_2008257343.xls
Download: download sample
Signature SilentBuilder
File size:112'230 bytes
First seen:2022-01-24 14:42:58 UTC
Last seen:2022-01-24 16:55:50 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:OB+nBqmpk3hbdlylKsgqopeJBWhZFGkE+cMLxAAInxe53lGvFTQ3IzxgdrvxpU0O:W+nBqmpk3hbdlylKsgqopeJBWhZFVE+K
TLSH T123B38CD766CB4C8AEE2903768DB60619E763FC715FE353472245B316AE70AC09D03A17
Reporter malware_traffic
Tags:Emotet epoch5 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
3100545 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
SuspiciousEXECMay run an executable file or a system
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 :
259
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
pack_2008257343.xls
Verdict:
Malicious activity
Analysis date:
2022-01-24 14:28:02 UTC
Tags:
macros macros40 trojan loader

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
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Changing an executable file
Launching a process
Running batch commands
Running batch commands by exploiting the app vulnerability
Infecting executable files
Sending an HTTP GET request to an infection source
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Document image
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
Label:
Malicious
Suspicious Score:
7.5/10
Score Malicious:
76%
Score Benign:
24%
Result
Verdict:
MALICIOUS
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.
Threat name:
Document-Excel.Trojan.Phonzy
Status:
Malicious
First seen:
2022-01-24 14:43:09 UTC
File Type:
Document
Extracted files:
9
AV detection:
6 of 43 (13.95%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:emotet botnet:epoch5 banker macro trojan xlm
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 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:
45.138.98.34:80
69.16.218.101:8080
51.210.242.234:8080
185.148.168.220:8080
142.4.219.173:8080
54.38.242.185:443
191.252.103.16:80
104.131.62.48:8080
62.171.178.147:8080
217.182.143.207:443
168.197.250.14:80
37.44.244.177:8080
66.42.57.149:443
210.57.209.142:8080
159.69.237.188:443
116.124.128.206:8080
128.199.192.135:8080
195.154.146.35:443
185.148.168.15:8080
195.77.239.39:8080
207.148.81.119:8080
85.214.67.203:8080
190.90.233.66:443
78.46.73.125:443
78.47.204.80:443
37.59.209.141:8080
54.37.228.122:443
Dropper Extraction:
http://0x5cff39c3/sec/se3.html
http://92.255.57.195/sec/se3.png
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
Rule name:Qbot
Author:Dhanunjaya
Description:Yara Rule to Detect Qbot
Rule name:SUSP_Excel4Macro_AutoOpen
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 f6317e6ed0e855867288e906a7cae696ae91d512ff71afbbbb6736123243329c

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments