MalwareBazaar Database

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

OLE dump

MalwareBazaar was able to identify 7 sections in this file using oledump:

OLE vba

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

Intelligence

File Origin

Vendor Threat Intelligence

ANY.RUN Malicious

Malware family:

n/a

ID:

1

File name:

BitMiningPool-Payments-Inv174765.doc

Verdict:

Malicious activity

Analysis date:

2021-01-04 05:52:32 UTC

Tags:

macros macros-on-open

Link:

https://app.any.run/tasks/895c9702-4162-4dee-aa6a-e8f73d0a40a1

Note:

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

BitDam Legit

Verdict:

Legit

File type:

application/msword

Has a screenshot:

False

Contains macros:

True

ClamAV Detected

Detection(s):

TwinWave.EvilDoc.DOCXRSTRGOOD.WCRIPTSHELL.GUID.201217.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a process with a hidden window

DNS request

Sending a custom TCP request

Launching a process by exploiting the app vulnerability

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

Word File with Macro

Link:

https://app.docguard.net/94b3ff23f3e9d87bf65c0bfd30764921b7d2c4778001b8b559495e2db21ec235/results/dashboard

Document image

Image:

Download PNG

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Details

Macro with Startup Hook

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

Macro with DLL Reference

Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).

Suspicious Document Variables

Detected a macro that references a suspicious number of tersely named variables.

Joe Sandbox malicious

Result

Threat name:

Unknown

Detection:

malicious

Classification:

expl.evad

Score:

68 / 100

Link:

https://www.joesandbox.com/analysis/573176

Signature

Document contains an embedded VBA macro with suspicious strings

Document contains an embedded VBA with many randomly named variables

Document exploit detected (process start blacklist hit)

Multi AV Scanner detection for submitted file

Obfuscated command line found

Sigma detected: Microsoft Office Product Spawning Windows Shell

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/94b3ff23f3e9d87bf65c0bfd30764921b7d2c4778001b8b559495e2db21ec235/

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ssz76i7t5hmhx5s4bp6ta5sjeg35frdxqaa3rnkzjfpc3mq6yi2q._file

Hatching Triage vidar

Result

Malware family:

vidar

Alert

Create hunting rule

Score:

  10/10

Tags:

family:vidar discovery spyware stealer upx

Link:

https://tria.ge/reports/210104-n6mr5sn1ve/

Behaviour

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Kills process with taskkill

Office loads VBA resources, possible macro or embedded object present

Drops file in Windows directory

Legitimate hosting services abused for malware hosting/C2

Accesses 2FA software files, possible credential harvesting

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

JavaScript code in executable

Looks up external IP address via web service

Loads dropped DLL

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Blocklisted process makes network request

Executes dropped EXE

UPX packed file

Process spawned unexpected child process

Vidar

Malware Config

Dropper Extraction:

https://bitbucket.org/cryptexxx/files/downloads/update_2021-01-02_17-23.exe

VirusTotal

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

YOROI YOMI Dropper

Threat name:

Dropper

Score:

0.80

Link:

https://yomi.yoroi.company/submissions/94b3ff23f3e9d87bf65c0bfd30764921b7d2c4778001b8b559495e2db21ec235

File information

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

  

Delivery method

Distributed via e-mail attachment

any.run

https://app.any.run/tasks/895c9702-4162-4dee-aa6a-e8f73d0a40a1

  

Dropping

SHA256 e2c6852826bbdcbf36f7fbb5ef3faf5b5ee31ad6fe59c604d00e33c52eb06e72

  

Dropping

ArkeiStealer

  

X

https://twitter.com/cocaman/status/1345978867098509315

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