MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139. 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

SHA256 hash:	a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139
SHA3-384 hash:	6d074994e6b6d7b0fcdcf3913642d0377fb9638c5c30675a1f0387cb6d06d95110d10904d9f7196e082ee43263c0f697
SHA1 hash:	85faa30ee8592ea8ecf17a422124271d9ca76d6e
MD5 hash:	88e803a686a9b635708dc2775c387a6b
humanhash:	music-uniform-fourteen-fanta
File name:	Statement Accts-Ma.xlsx
Download:	download sample
Signature	Formbook Alert Create hunting rule
File size:	351'232 bytes
First seen:	2022-04-14 05:41:10 UTC
Last seen:	2022-04-14 06:03:36 UTC
File type:	xlsx
MIME type:	application/encrypted
ssdeep	6144:mlBGZ8RW5WqiY+/Mgm/pRKCZYzM5iA9vOTrQSa0S7T2u46Z2JIQVHPnSz7rwX8GA:s6L5FGM/nqM5igv1Sa0SrMKQNC+Uhqw
TLSH	T169741224B96F5EC7D07313B988280B5A023CDEC51B6192E679707B53C6BDFEC026AE54
Reporter	abuse_ch
Tags:	CVE-2018-0798 FormBook VelvetSweatshop xlsx

Office OLE Information

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This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

Detection: VelvetSweatshop

MalwareBazaar was able to identify 6 sections in this file using oledump:

Section ID	Section size	Section name
1	64 bytes	DataSpaces/DataSpaceInfo/StrongEncryptionDataSpace
2	112 bytes	DataSpaces/DataSpaceMap
3	208 bytes	DataSpaces/TransformInfo/StrongEncryptionTransform/Primary
4	76 bytes	DataSpaces/Version
5	344216 bytes	EncryptedPackage
6	224 bytes	EncryptionInfo

Intelligence

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File Origin

# of uploads :

2

# of downloads :

228

Origin country :

n/a

Vendor Threat Intelligence

ANY.RUN formbook

Malware family:

formbook

Alert

Create hunting rule

ID:

1

File name:

Statement Accts-Ma.xlsx

Verdict:

Malicious activity

Analysis date:

2022-04-14 05:46:31 UTC

Tags:

encrypted trojan opendir exploit CVE-2017-11882 loader formbook stealer

Link:

https://app.any.run/tasks/1ce1bfe6-bdc8-4236-9d73-325bf4a49af0

Note:

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

BitDam Malicious

Verdict:

Malicious

File type:

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Has a screenshot:

False

Contains macros:

False

CAPE Sandbox

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/263551/

ClamAV Detected

Detection(s):

PUA.Doc.Packed.EncryptedDoc-6563700-0

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Searching for synchronization primitives

Launching a process

Creating a file

Сreating synchronization primitives

Creating a file in the %temp% directory

Launching cmd.exe command interpreter

Unauthorized injection to a recently created process by context flags manipulation

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

Creating a process from a recently created file

Unauthorized injection to a system process

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

OOXML Excel File with Embedding Objects in Encrypted Excel File

Link:

https://app.docguard.net/a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139/results/dashboard

Document image

Image:

Download PNG

FileScan.IO Malicious

Verdict:

Malicious

Threat level:

  10/10

Confidence:

100%

Tags:

control.exe embedequation exploit shell32.dll shellcode VelvetSweatshop

Link:

https://www.filescan.io/uploads/6257b42b482f2f41caabf0cd/reports/1aa98cdf-4d41-4c83-9af6-257f39b2f9ca/overview

inlyse Malware.AI Malicious

Label:

Malicious

Suspicious Score:

6.6/10

Score Malicious:

66%

Score Benign:

34%

Link:

https://www.malware.ai/gui/files/?id=5e90c0d6-42af-4243-abf9-a999fb2be19e

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139

Details

Document With No Content

Document contains little or no semantic information.

Joe Sandbox FormBook

Result

Threat name:

FormBook

Alert

Create hunting rule

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/976651

Signature

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Drops PE files to the user root directory

Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)

Found malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Modifies the context of a thread in another process (thread injection)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Office equation editor drops PE file

Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: Droppers Exploiting CVE-2017-11882

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: Execution from Suspicious Folder

Sigma detected: File Dropped By EQNEDT32EXE

Tries to detect virtualization through RDTSC time measurements

Uses netstat to query active network connections and open ports

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB formbook

Detection:

formbook

Alert

Create hunting rule

Link:

https://mwdb.cert.pl/sample/a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139/

ReversingLabs TitaniumCloud Document-OLE.Exploit.CVE-2018-0798

Threat name:

Document-OLE.Exploit.CVE-2018-0798

Alert

Create hunting rule

Status:

Malicious

First seen:

2022-04-13 12:21:46 UTC

File Type:

Document

Extracted files:

59

AV detection:

12 of 26 (46.15%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ufz5dipzvahwuwuar7fh5k2v7ccrmjz6a27a64deix6swi362e4q._file

Hatching Triage xloader

Result

Malware family:

xloader

Alert

Create hunting rule

Score:

  10/10

Tags:

family:xloader campaign:hpe8 loader rat suricata

Link:

https://tria.ge/reports/220414-gd1d7sgfer/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

NSIS installer

Enumerates physical storage devices

Suspicious use of SetThreadContext

Loads dropped DLL

Uses the VBS compiler for execution

Blocklisted process makes network request

Downloads MZ/PE file

Executes dropped EXE

Xloader Payload

Xloader

suricata: ET MALWARE FormBook CnC Checkin (GET)

suricata: ET MALWARE MSIL/GenKryptik.FQRH Download Request

suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

VirusTotal

Please note that we are no longer able to provide a coverage score for Virus Total.

YOROI YOMI Legit

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139

File information

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

Malspam

Formbook

xlsx a173d1a1f9a80f6a5a808fca7eab55f88516273e06be0f706445fd2b237ed139

(this sample)

  

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/263551/

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