MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5. 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:	dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5
SHA3-384 hash:	9c3d1d35a20d812a17e0db24717c9c6f7e19cc31fe8106bcb534b9b557e09eb9492e3d1058406d3797e71c17b7e5f587
SHA1 hash:	e26c686765d63dfa2c1b7eaab31380e9f624e6f6
MD5 hash:	65da4443b4dcc32160e69cea271a7611
humanhash:	bravo-network-whiskey-gee
File name:	Invoice-Transfer Details 04142022.xlsx
Download:	download sample
Signature	RemcosRAT Alert Create hunting rule
File size:	357'888 bytes
First seen:	2022-04-14 05:41:27 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/encrypted
ssdeep	6144:Cpl1hwwmntaqNfZ6qiVdxtFc/IecnGrCqG8M5BxdjlANpfGuUO0PqHnvVt5y:Cpl1hwDt1AqEdrFHWCqGHOpuuUnPit
TLSH	T1AD74227DB6219F0BF0EA05345E2FC6FBA921DED2868262877196776E91373C1D037068
Reporter	abuse_ch
Tags:	CVE-2018-0802 RemcosRAT 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	351080 bytes	EncryptedPackage
6	224 bytes	EncryptionInfo

Intelligence

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File Origin

# of uploads :

1

# of downloads :

236

Origin country :

n/a

Vendor Threat Intelligence

ANY.RUN remcos

Malware family:

remcos

Alert

Create hunting rule

ID:

1

File name:

Invoice-Transfer Details 04142022.xlsx

Verdict:

Malicious activity

Analysis date:

2022-04-14 05:43:56 UTC

Tags:

encrypted exploit CVE-2017-11882 loader rat remcos

Link:

https://app.any.run/tasks/94cf5297-9224-48d4-a391-ea1bb3133aae

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/263554/

ClamAV Detected

Detection(s):

SecuriteInfo.com.Exploit.CVE-2018-0802.Gen.26376.9271.UNOFFICIAL

Alert

Create hunting rule

PUA.Doc.Packed.EncryptedDoc-6563700-0

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Sending a custom TCP request

Creating a window

Searching for synchronization primitives

Launching a process

Creating a file

Сreating synchronization primitives

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Creating a file in the %temp% directory

Launching the default Windows debugger (dwwin.exe)

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

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

Creating a process from a recently created file

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

OOXML Excel File with Embedding Objects in Encrypted Excel File

Link:

https://app.docguard.net/dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5/results/dashboard

Document image

Image:

Download PNG

FileScan.IO Malicious

Verdict:

Malicious

Threat level:

  10/10

Confidence:

100%

Tags:

embedequation exploit greyware packed shellcode VelvetSweatshop

Link:

https://www.filescan.io/uploads/6257b42eeab80a7a6c10293e/reports/2f5eeebb-c276-4993-8c84-5afe16d63068/overview

inlyse Malware.AI Malicious

Label:

Malicious

Suspicious Score:

6.5/10

Score Malicious:

65%

Score Benign:

35%

Link:

https://www.malware.ai/gui/files/?id=7cf5726f-2050-4b65-9480-8fdf36e0a782

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5

Details

Document With No Content

Document contains little or no semantic information.

Joe Sandbox Remcos

Result

Threat name:

Remcos

Alert

Create hunting rule

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/976645

Signature

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to inject code into remote processes

Contains functionality to register a low level keyboard hook

Contains functionality to steal Chrome passwords or cookies

Contains functionality to steal Firefox passwords or cookies

Contains functionalty to change the wallpaper

Delayed program exit found

Detected unpacking (changes PE section rights)

Detected unpacking (overwrites its own PE header)

Drops PE files to the user root directory

Found malware configuration

Installs a global keyboard hook

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

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)

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

Sigma detected: Parent in Public Folder Suspicious Process

Sigma detected: Suspicious Script Execution From Temp Folder

Sigma detected: WScript or CScript Dropper

Yara detected Remcos RAT

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB remcos

Detection:

remcos

Alert

Create hunting rule

Link:

https://mwdb.cert.pl/sample/dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5/

ReversingLabs TitaniumCloud Document-Office.Exploit.CVE-2018-0802

Threat name:

Document-Office.Exploit.CVE-2018-0802

Alert

Create hunting rule

Status:

Malicious

First seen:

2022-04-14 04:08:43 UTC

File Type:

Document

Extracted files:

63

AV detection:

14 of 41 (34.15%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=3s4lpxid2ifm6y446yx4vwzqt3dmc2ttb2zprkkea2o2m4kgxgsq._file

Hatching Triage remcos

Result

Malware family:

remcos

Alert

Create hunting rule

Score:

  10/10

Tags:

family:remcos botnet:gee2022 persistence rat

Link:

https://tria.ge/reports/220414-gd1pzagffk/

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 use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Adds Run key to start application

Loads dropped DLL

Uses the VBS compiler for execution

Blocklisted process makes network request

Downloads MZ/PE file

Executes dropped EXE

Remcos

Malware Config

C2 Extraction:

davidwongwarzone.zapto.org:2030

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/dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5

File information

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

Malspam

RemcosRAT

xlsx dcb8b7dd03d20acf639cf62fcadb309ec6c16a730eb2f8a944069da67146b9a5

(this sample)

  

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/263554/

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