Malware Analysis Report

2025-05-05 21:52

Sample ID 221010-jxnwmabbd2
Target eReceipt.js
SHA256 90e88a55046ff7bc2ea11a44bcbda591639c29de30f5274a44f951b0359b2f2e
Tags
vjw0rm persistence trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

90e88a55046ff7bc2ea11a44bcbda591639c29de30f5274a44f951b0359b2f2e

Threat Level: Known bad

The file eReceipt.js was found to be: Known bad.

Malicious Activity Summary

vjw0rm persistence trojan worm

Vjw0rm

Blocklisted process makes network request

Checks computer location settings

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-10 08:03

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-10 08:03

Reported

2022-10-10 08:05

Platform

win10v2004-20220812-en

Max time kernel

151s

Max time network

154s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\eReceipt.js

Signatures

Vjw0rm

trojan worm vjw0rm

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\system32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation C:\Windows\system32\wscript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IjKIytFPkg.js C:\Windows\System32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IjKIytFPkg.js C:\Windows\System32\wscript.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eReceipt.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KYXNMD0WI5 = "\"C:\\Users\\Admin\\eReceipt.js\"" C:\Windows\system32\wscript.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4668 wrote to memory of 4908 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 4668 wrote to memory of 4908 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 4668 wrote to memory of 1328 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 4668 wrote to memory of 1328 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\eReceipt.js

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\IjKIytFPkg.js"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\eReceipt.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 zeegod.duckdns.org udp
US 8.8.8.8:53 javaautorun.duia.ro udp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
US 107.182.129.16:9004 zeegod.duckdns.org tcp
US 20.42.73.24:443 tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp

Files

memory/4908-132-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\IjKIytFPkg.js

MD5 ef0483773297fed332856b0c51c77ec5
SHA1 0215fef393a219df1a8263cfd89b3de50328327c
SHA256 26742501b9958757e1003e4b8b43a3df7e698cbb30c0339e59b62edeea24f231
SHA512 1aee96ac181e5246c74d0a11e4a248617388c70de0c62302a853f9a11f2a5f1480a7898d7a6b7f8ca4dfbe0afde80129edafc39dfb64e48686a5be0f824f7998

memory/1328-134-0x0000000000000000-mapping.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-10 08:03

Reported

2022-10-10 08:05

Platform

win7-20220901-en

Max time kernel

149s

Max time network

153s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\eReceipt.js

Signatures

Vjw0rm

trojan worm vjw0rm

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\system32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A
N/A N/A C:\Windows\System32\wscript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eReceipt.js C:\Windows\system32\wscript.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IjKIytFPkg.js C:\Windows\System32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IjKIytFPkg.js C:\Windows\System32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\KYXNMD0WI5 = "\"C:\\Users\\Admin\\eReceipt.js\"" C:\Windows\system32\wscript.exe N/A
Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 956 wrote to memory of 1616 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 956 wrote to memory of 1616 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 956 wrote to memory of 1616 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 956 wrote to memory of 988 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 956 wrote to memory of 988 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 956 wrote to memory of 988 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\eReceipt.js

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\IjKIytFPkg.js"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\eReceipt.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 zeegod.duckdns.org udp
US 8.8.8.8:53 javaautorun.duia.ro udp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
US 107.182.129.16:9004 zeegod.duckdns.org tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp
JP 156.146.35.171:5465 javaautorun.duia.ro tcp

Files

memory/956-54-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

memory/1616-55-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\IjKIytFPkg.js

MD5 ef0483773297fed332856b0c51c77ec5
SHA1 0215fef393a219df1a8263cfd89b3de50328327c
SHA256 26742501b9958757e1003e4b8b43a3df7e698cbb30c0339e59b62edeea24f231
SHA512 1aee96ac181e5246c74d0a11e4a248617388c70de0c62302a853f9a11f2a5f1480a7898d7a6b7f8ca4dfbe0afde80129edafc39dfb64e48686a5be0f824f7998

memory/988-58-0x0000000000000000-mapping.dmp