MalwareBazaar Database

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

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 16 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:

Purchase OrderDated19032021.xls

Verdict:

Malicious activity

Analysis date:

2021-03-22 18:05:39 UTC

Tags:

macros macros-on-open maldoc-5

Link:

https://app.any.run/tasks/b40321e5-7729-4434-9b41-2dfda94ea60a

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.ms-excel

Has a screenshot:

False

Contains macros:

True

CAPE Sandbox

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/126061/

ClamAV Detected

Detection(s):

TwinWave.EvilDoc.SpawnInstancesTheBeautifulOnes.20210222.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Using the Windows Management Instrumentation requests

Creating a process with a hidden window

DNS request

Sending a custom TCP request

Creating a file in the %temp% directory

Creating a process from a recently created file

Creating a file in the %AppData% directory

Launching a process

Deleting a recently created file

Creating a file in the %AppData% subdirectories

Sending a TCP request to an infection source

Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)

Launching a process by exploiting the app vulnerability

Enabling autorun by creating a file

Unauthorized injection to a system process

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/e4d560c489dba28369b781106a1334767ff82bb44b69b9e4cc6d068feb29ab6b/results/dashboard

Document image

Image:

Download PNG

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/e4d560c489dba28369b781106a1334767ff82bb44b69b9e4cc6d068feb29ab6b

Details

Macro with Startup Hook

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

Macro Contains Suspicious String

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

InQuest Machine Learning

An InQuest machine-learning model classified this macro as potentially malicious.

Joe Sandbox Nanocore

Result

Threat name:

Nanocore

Alert

Create hunting rule

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/649184

Signature

.NET source code contains potential unpacker

Allocates memory in foreign processes

Binary contains a suspicious time stamp

Creates processes via WMI

Detected Nanocore Rat

Document contains an embedded VBA macro which may execute processes

Document contains an embedded VBA with base64 encoded strings

Document contains an embedded VBA with hexadecimal encoded strings

Document contains an embedded VBA with many randomly named variables

Hides that the sample has been downloaded from the Internet (zone.identifier)

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Obfuscated command line found

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Powershell drops PE file

Sigma detected: NanoCore

Sigma detected: Scheduled temp file as task from temp location

Suspicious powershell command line found

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Uses schtasks.exe or at.exe to add and modify task schedules

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected Nanocore RAT

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/e4d560c489dba28369b781106a1334767ff82bb44b69b9e4cc6d068feb29ab6b/

ReversingLabs TitaniumCloud Script-Macro.Trojan.Valyria

Threat name:

Script-Macro.Trojan.Valyria

Alert

Create hunting rule

Status:

Malicious

First seen:

2021-03-20 12:58:14 UTC

AV detection:

13 of 47 (27.66%)

Threat level:

  5/5

Spamhaus Hash Blocklist Malicious file

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=4tkwbrej3orig2nxqeiguezuoz77qk5ujnu3tzgmnudi72zjvnvq._file

Hatching Triage nanocore

Result

Malware family:

nanocore

Alert

Create hunting rule

Score:

  10/10

Tags:

family:nanocore keylogger macro macro_on_action spyware stealer trojan

Link:

https://tria.ge/reports/210322-r5jek2vn12/

Behaviour

Checks processor information in registry

Creates scheduled task(s)

Enumerates system info in registry

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

Office loads VBA resources, possible macro or embedded object present

Enumerates physical storage devices

Drops file in System32 directory

Suspicious use of SetThreadContext

Blocklisted process makes network request

Executes dropped EXE

NanoCore

Process spawned unexpected child process

Malware Config

C2 Extraction:

185.140.53.130:2364
mydnsnanocore123.ddns.net:2364

Dropper Extraction:

https://cdn.discordapp.com/attachments/814408945828626445/822323767334273094/VEqScSTKqHP3LQI.exe

VirusTotal

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

YOROI YOMI Donoff

Threat name:

Donoff

Score:

0.80

Link:

https://yomi.yoroi.company/submissions/e4d560c489dba28369b781106a1334767ff82bb44b69b9e4cc6d068feb29ab6b

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.

File information

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

Cape

https://www.capesandbox.com/analysis/126061/

Comments