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 15 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:

PO-21322.xlsm

Verdict:

Malicious activity

Analysis date:

2021-03-22 17:36:58 UTC

Tags:

macros macros-on-open loader trojan rat asyncrat

Link:

https://app.any.run/tasks/d43e47ed-173f-4c96-beff-0090d8411fd2

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.sheet.macroEnabled.12

Has a screenshot:

False

Contains macros:

True

CAPE Sandbox

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/126019/

ClamAV Detected

Detection(s):

TwinWave.EvilDoc.StringBuidlersEveryRoseHasItsThorn.20210308.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a process with a hidden window

Launching a process

DNS request

Sending an HTTP GET request

Creating a file in the %AppData% directory

Creating a process from a recently created file

Creating a file

Moving a recently created file

Creating a file in the Windows subdirectories

Creating a file in the %temp% subdirectories

Launching a service

Deleting a recently created file

Running batch commands

Adding an access-denied ACE

Creating a file in the Windows directory

Modifying an executable file

Launching the default Windows debugger (dwwin.exe)

Connection attempt

Creating a file in the Program Files subdirectories

Setting a single autorun event

Blocking the Windows Defender launch

Unauthorized injection to a recently created process by context flags manipulation

Enabling autorun with the shell\open\command registry branches

Running batch commands by exploiting the app vulnerability

Adding exclusions to Windows Defender

Infecting executable files

DocGuard Suspicious

Result

Verdict:

Suspicious

File Type:

Excel File with Macro

Link:

https://app.docguard.net/2657a10c7ccd83fe042c172a67c31c3a40dfff1c97cc7549533b2af8de2eb88e/results/dashboard

Document image

Image:

Download PNG

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/2657a10c7ccd83fe042c172a67c31c3a40dfff1c97cc7549533b2af8de2eb88e

Details

Macro with Startup Hook

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

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...

Document With No Content

Document contains little or no semantic information.

Joe Sandbox AgentTesla AsyncRAT Neshta

Result

Threat name:

AgentTesla AsyncRAT Neshta

Alert

Create hunting rule

Detection:

malicious

Classification:

spre.troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/648251

Signature

Adds a directory exclusion to Windows Defender

Antivirus detection for dropped file

Antivirus detection for URL or domain

Binary contains a suspicious time stamp

Connects to many ports of the same IP (likely port scanning)

Contains functionality to hide a thread from the debugger

Creates an autostart registry key pointing to binary in C:\Windows

Creates an undocumented autostart registry key

Document contains an embedded VBA macro which may execute processes

Document contains an embedded VBA with many string operations indicating source code obfuscation

Document exploit detected (creates forbidden files)

Document exploit detected (drops PE files)

Document exploit detected (process start blacklist hit)

Drops executable to a common third party application directory

Drops executables to the windows directory (C:\Windows) and starts them

Drops PE files with a suspicious file extension

Drops PE files with benign system names

Encrypted powershell cmdline option found

Found malware configuration

Hides threads from debuggers

Infects executable files (exe, dll, sys, html)

Injects a PE file into a foreign processes

Injects files into Windows application

Machine Learning detection for dropped file

Machine Learning detection for sample

Multi AV Scanner detection for dropped file

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

Office process drops PE file

Powershell drops PE file

Sample is not signed and drops a device driver

Sigma detected: Microsoft Office Product Spawning Windows Shell

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

System process connects to network (likely due to code injection or exploit)

Tries to delay execution (extensive OutputDebugStringW loop)

Uses dynamic DNS services

Yara detected AgentTesla

Yara detected AsyncRAT

Yara detected Neshta

Yara detected Powershell download and execute

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/2657a10c7ccd83fe042c172a67c31c3a40dfff1c97cc7549533b2af8de2eb88e/

ReversingLabs TitaniumCloud Script-Macro.Downloader.NetWired

Threat name:

Script-Macro.Downloader.NetWired

Alert

Create hunting rule

Status:

Malicious

First seen:

2021-03-22 17:22:06 UTC

AV detection:

17 of 47 (36.17%)

Threat level:

  3/5

Spamhaus Hash Blocklist Malicious file

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ezl2cdd4zwb74bbmc4vgpqy4hjan77y4s7ghkskthmvprxroxcha._file

Hatching Triage asyncrat

Result

Malware family:

asyncrat

Alert

Create hunting rule

Score:

  10/10

Tags:

family:agenttesla family:asyncrat evasion keylogger persistence rat spyware stealer trojan

Link:

https://tria.ge/reports/210322-lvw4w6fd92/

Behaviour

Checks processor information in registry

Delays execution with timeout.exe

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

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

Program crash

Drops file in Program Files directory

Drops file in Windows directory

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Adds Run key to start application

Loads dropped DLL

Reads user/profile data of web browsers

Windows security modification

Blocklisted process makes network request

Executes dropped EXE

AgentTesla Payload

Async RAT payload

Nirsoft

AgentTesla

AsyncRat

Modifies Windows Defender Real-time Protection settings

Modifies system executable filetype association

Process spawned unexpected child process

Turns off Windows Defender SpyNet reporting

Windows security bypass

Malware Config

C2 Extraction:

chongmei33.publicvm.com:2703
chongmei33.publicvm.com:49703
chongmei33.publicvm.com:49746
185.165.153.116:2703
185.165.153.116:49703
185.165.153.116:49746
54.37.36.116:2703
54.37.36.116:49703
54.37.36.116:49746
185.244.30.92:2703
185.244.30.92:49703
185.244.30.92:49746
dongreg202020.duckdns.org:2703
dongreg202020.duckdns.org:49703
dongreg202020.duckdns.org:49746
178.33.222.241:2703
178.33.222.241:49703
178.33.222.241:49746
rahim321.duckdns.org:2703
rahim321.duckdns.org:49703
rahim321.duckdns.org:49746
79.134.225.92:2703
79.134.225.92:49703
79.134.225.92:49746
37.120.208.36:2703
37.120.208.36:49703
37.120.208.36:49746
178.33.222.243:2703
178.33.222.243:49703
178.33.222.243:49746
87.98.245.48:2703
87.98.245.48:49703
87.98.245.48:49746

Dropper Extraction:

http://transfer.sh/get/NTxd/notepad.exe

VirusTotal

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

YOROI YOMI Malicious File

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/2657a10c7ccd83fe042c172a67c31c3a40dfff1c97cc7549533b2af8de2eb88e

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/126019/

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