MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d. 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


Threat unknown


Vendor detections: 11


Maldoc score: 23


Intelligence 11 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d
SHA3-384 hash: eda4bdc93c8599f6eae27a7c5eb44f3ae55e3b9cb0eafd8665aeb45e792cae95ff192644ed2c617ecb37c11acd68dffc
SHA1 hash: 4b5e4b5603019287fa6418755339c8c19cc06e5f
MD5 hash: 92c8fc3f3f5b60c1571c4999126a361c
humanhash: july-oxygen-seven-river
File name:makbuzu.xls
Download: download sample
File size:257'024 bytes
First seen:2023-01-03 16:32:36 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:zxEtjPOtioVjDGUU1qfDlavx+W2QnADGABS4RyEkS4lyDdjcu/Qe9EaV9V/5ljSR:9BSCkS4cpcu/VKajVRQ3hYU
TLSH T18344E1913665F8D0D10837B50CEAC2997B21FC569F2B4B0B3249B76F5EB17E0C903A16
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags: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: 23
OLE dump

MalwareBazaar was able to identify 19 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4225112 bytesWorkbook
5640 bytes_VBA_PROJECT_CUR/PROJECT
6128 bytes_VBA_PROJECT_CUR/PROJECTwm
7960 bytes_VBA_PROJECT_CUR/VBA/Module1
8985 bytes_VBA_PROJECT_CUR/VBA/Sheet1
9985 bytes_VBA_PROJECT_CUR/VBA/Sheet2
10985 bytes_VBA_PROJECT_CUR/VBA/Sheet3
119175 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
126337 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
131532 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
14332 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
1584 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
16104 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
17468 bytes_VBA_PROJECT_CUR/VBA/__SRP_4
18352 bytes_VBA_PROJECT_CUR/VBA/__SRP_5
19612 bytes_VBA_PROJECT_CUR/VBA/dir
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
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
SuspiciousOpenMay open a file
SuspiciousWriteMay write to a file (if combined with Open)
Suspiciousadodb.streamMay create a text file
SuspiciousSaveToFileMay create a text file
SuspiciousShellMay run an executable file or a system command
SuspiciousWScript.ShellMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousShell.ApplicationMay run an application (if combined with CreateObject)
Suspiciousmicrosoft.xmlhttpMay download files from the Internet
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
196
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
makbuzu.xls
Verdict:
Malicious activity
Analysis date:
2023-01-03 16:38:18 UTC
Tags:
macros macros-on-open
Link:
https://app.any.run/tasks/13468440-790f-4953-adaa-96e57cc9b34a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
MiscreantPunch.EvilMacro.DL.170224.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CROAndTheTangerineDream.M1.20200630.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.StatusIsLikeAFriend.20210201.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Office.Macro-13.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Office.Macro-11.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.XlsM.objshell.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ShoulderOfOrion.20220121.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Creating a file in the %AppData% subdirectories
Launching cmd.exe command interpreter
Creating a process with a hidden window
Sending an HTTP GET request
Unauthorized injection to a recently created process
Sending a custom TCP request by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d/results/dashboard
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
evasive macros macros-on-open packed
Link:
https://www.filescan.io/uploads/63b458c140e878e304226a1d/reports/0cc0d277-7c4d-4888-9250-11f312bf797e/overview
Label:
Malicious
Suspicious Score:
9.9/10
Score Malicious:
99%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=0643f859-0a9b-45b7-9f47-40ee47ffb900
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with File System Write
Detected macro logic that can write data to the file system.
Shell.Application Object
Detected the instantiation of Shell Application object within the macro.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1144665
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office process drops PE file
PE file contains section with special chars
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d/
Threat name:
Script-Macro.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2023-01-03 10:03:46 UTC
File Type:
Document
Extracted files:
31
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=na2g2i7tlgrhorfutvxktpjct4ustuoo4blwodjlu42ulqf2ij6q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro macro_on_action
Link:
https://tria.ge/reports/230103-t2hwaaca59/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Office loads VBA resources, possible macro or embedded object present
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/68346d23f359/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/68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB

File information

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

Malspam

Excel file xls 68346d23f359a27744b49d6ea9bd229f2929d1cee057670d2ba73545c0ba427d

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments