MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43a263188928226e26bb33107f33d548de8d8a77ed5796d1e9d31695843d2dc3. 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: 31

Intelligence 11 IOCs YARA 4 File information Comments

SHA256 hash:	43a263188928226e26bb33107f33d548de8d8a77ed5796d1e9d31695843d2dc3
SHA3-384 hash:	4b98e0cc3b27bd2ce6b16f0a8202dab8bcb0ffcd14a9419f59b88d697a81d2f25368292d676f30e33f9f22540322710c
SHA1 hash:	c9db1ee29f3bf55a3980a83b37c61a9422410af6
MD5 hash:	3f44f7070c2e944e01fc1687c4412574
humanhash:	lemon-kansas-georgia-video
File name:	3f44f7070c2e944e01fc1687c4412574.doc
Download:	download sample
File size:	94'240 bytes
First seen:	2022-04-15 06:53:48 UTC
Last seen:	Never
File type:	doc
MIME type:	application/msword
ssdeep	1536:Hks7KRNl3ArCf0p36lYZi1hjlGWs1vRpjdUHZo:H7Al3KCsKKZi1hjXEppdUHZo
TLSH	T1E4931D03BD48CA57E14487B8BE97CEF92B297E09DC4277EB30657F9E2E302148D46619
TrID	52.6% (.DOC) Microsoft Word document (30000/1/2) 33.3% (.DOC) Microsoft Word document (old ver.) (19000/1/2) 14.0% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter	abuse_ch
Tags:	doc

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: 31

OLE dump

MalwareBazaar was able to identify 26 sections in this file using oledump:

Section ID	Section size	Section name
1	114 bytes	CompObj
2	4096 bytes	DocumentSummaryInformation
3	4096 bytes	SummaryInformation
4	9934 bytes	1Table
5	22116 bytes	Data
6	97 bytes	Macros/LocalBrowser/CompObj
7	297 bytes	Macros/LocalBrowser/VBFrame
8	623 bytes	Macros/LocalBrowser/f
9	640 bytes	Macros/LocalBrowser/o
10	834 bytes	Macros/PROJECT
11	212 bytes	Macros/PROJECTwm
12	2715 bytes	Macros/VBA/Class1
13	1164 bytes	Macros/VBA/LocalBrowser
14	2002 bytes	Macros/VBA/Locl
15	730 bytes	Macros/VBA/Module1
16	3276 bytes	Macros/VBA/Module2
17	13090 bytes	Macros/VBA/Module3
18	2870 bytes	Macros/VBA/Module4
19	1589 bytes	Macros/VBA/ThisDocument
20	6745 bytes	Macros/VBA/_VBA_PROJECT
21	1837 bytes	Macros/VBA/__SRP_0
22	130 bytes	Macros/VBA/__SRP_1
23	376 bytes	Macros/VBA/__SRP_2
24	140 bytes	Macros/VBA/__SRP_3
25	1016 bytes	Macros/VBA/dir
26	4096 bytes	WordDocument

OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

Type	Keyword	Description
AutoExec	autoopen	Runs when the Word document is opened
AutoExec	Document_Open	Runs when the Word or Publisher document is opened
AutoExec	SaveDataCSVToolStrip	Runs when the file is opened and ActiveX objects trigger events
IOC	objMember.Class	Executable file name
IOC	rundll32.exe	Executable file name
Suspicious	Environment	May read system environment variables
Suspicious	Open	May open a file
Suspicious	Write	May write to a file (if combined with Open)
Suspicious	Put	May write to a file (if combined with Open)
Suspicious	Binary	May read or write a binary file (if combined with Open)
Suspicious	Command	May run PowerShell commands
Suspicious	CreateObject	May create an OLE object
Suspicious	GetObject	May get an OLE object with a running instance
Suspicious	Windows	May enumerate application windows (if combined with Shell.Application object)
Suspicious	User-Agent	May download files from the Internet
Suspicious	CallByName	May attempt to obfuscate malicious function calls
Suspicious	sample	May detect Anubis Sandbox
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
Suspicious	Base64 Strings	Base64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin

# of uploads :

# of downloads :

376

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

3f44f7070c2e944e01fc1687c4412574.doc

Verdict:

Malicious activity

Analysis date:

2022-04-15 07:50:55 UTC

Tags:

macros macros-on-open generated-doc trojan

Link:

https://app.any.run/tasks/93139715-2079-447e-a5ca-bd0edb0ce75c

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Verdict:

Malicious

File type:

application/msword

Has a screenshot:

False

Contains macros:

True

Detection(s):

MiscreantPunch.EvilMacro.WSDL.170609.UNOFFICIAL

TwinWave.EvilDoc.TKSDaftPunkRobotRock.20210224.UNOFFICIAL

TwinWave.EvilDoc.CROMiscreantNeuralLinkTerra.20210721.UNOFFICIAL

TwinWave.EvilDoc.CBNStringBuilderHidingPlacesPapaDontTakeNoMess.20200916.UNOFFICIAL

SecuriteInfo.com.Office.Macro-12.UNOFFICIAL

SecuriteInfo.com.W97M.Downloader.Gen.UNOFFICIAL

Sanesecurity.Badmacro.Doc.cu1.UNOFFICIAL

Sanesecurity.Badmacro.Doc.blankautoopen.UNOFFICIAL

Sanesecurity.Badmacro.Doc.blankopen.UNOFFICIAL

Sanesecurity.Badmacro.Doc.poker.UNOFFICIAL

Sanesecurity.Badmacro.Doc.stf.UNOFFICIAL

Sanesecurity.Badmacro.Doc.xmlht2.UNOFFICIAL

Sanesecurity.Badmacro.Doc.httpobj.UNOFFICIAL

Sanesecurity.Badmacro.Doc.xmlht.UNOFFICIAL

Sanesecurity.Badmacro.Doc.ramf.UNOFFICIAL

Sanesecurity.Malware.24945.MacroHeurGen.R1.UNOFFICIAL

Sanesecurity.Badmacro.24945.MacroHeurGen.R1.UNOFFICIAL

Sanesecurity.Malware.24787.MacroHeurGen.Bp.UNOFFICIAL

Sanesecurity.Badmacro.24787.MacroHeurGen.Bp.UNOFFICIAL

Sanesecurity.Badmacro.BadDoc.Fmt.ShellA.UNOFFICIAL

MiscreantPunch.EvilMacro.FStore.UNOFFICIAL

MiscreantPunch.EvilMacro.AODBWSRBMS.UNOFFICIAL

Doc.Downloader.Jaff-6329915-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Searching for synchronization primitives

Creating a file in the %temp% directory

Changing an executable file

Query of malicious DNS domain

Sending an HTTP GET request to an infection source by exploiting the app vulnerability

Infecting executable files

Result

Verdict:

Malicious

File Type:

Legacy Word File with Macro

Link:

https://app.docguard.net/43a263188928226e26bb33107f33d548de8d8a77ed5796d1e9d31695843d2dc3/results/dashboard

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

hacktool macros macros-on-open rundll32.exe

Link:

https://www.filescan.io/uploads/62591705ffe27d5119d75e3d/reports/2ad281f4-df30-48c5-a786-e85fea378d7a/overview

Label:

Malicious

Suspicious Score:

9.2/10

Score Malicious:

93%

Score Benign:

Link:

https://www.malware.ai/gui/files/?id=98261d2a-c6d8-4304-9592-09d419909b79

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/43a263188928226e26bb33107f33d548de8d8a77ed5796d1e9d31695843d2dc3

Details

Macro with Startup Hook

Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.

Document With Few Pages

Document contains between one and three pages of content. Most malicious documents are sparse in page count.

Macro Execution Coercion

Detected a document that appears to social engineer the user into activating embedded logic.

Macro Contains Suspicious String

Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...

Result

Threat name:

Unknown

Detection:

malicious

Classification:

expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/977333

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Document contains an embedded macro with GUI obfuscation

Document contains an embedded VBA macro with suspicious strings

Document contains an embedded VBA with base64 encoded strings

Document contains an embedded VBA with functions possibly related to ADO stream file operations

Document contains OLE streams with names of living off the land binaries

Document exploit detected (creates forbidden files)

Machine Learning detection for sample

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)

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/43a263188928226e26bb33107f33d548de8d8a77ed5796d1e9d31695843d2dc3/

Threat name:

Document-Word.Downloader.Bartallex

Status:

Malicious

First seen:

2022-04-13 10:42:11 UTC

File Type:

Document

Extracted files:

AV detection:

32 of 41 (78.05%)

Threat level:

3/5

Result

Malware family:

n/a

Score:

10/10

Tags:

macro macro_on_action suricata

Link:

https://tria.ge/reports/220415-hn73gaaegq/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Drops file in Windows directory

suricata: ET MALWARE Known Malicious Doc Downloading Payload Dec 06 2016

suricata: ET MALWARE MalDoc Retrieving Payload May 23 2017 2

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/43a263188928226e26bb33107f33d548de8d8a77ed5796d1e9d31695843d2dc3

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:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	SUSP_VBA_FileSystem_Access Create hunting rule
Author:	Florian Roth
Description:	Detects suspicious VBA that writes to disk and is activated on document open
Reference:	Internal Research

Rule name:	SUSP_VBA_FileSystem_Access_RID30A9 Create hunting rule
Author:	Florian Roth
Description:	Detects suspicious VBA that writes to disk and is activated on document open
Reference:	Internal Research

File information

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

No further information available

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