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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb2a1888f9073bccc52c7a99f544c0b2fdcc6de2f3d7e7468512efe3ba7901a2. 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


Vjw0rm


Vendor detections: 6


Intelligence 6 IOCs 1 YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fb2a1888f9073bccc52c7a99f544c0b2fdcc6de2f3d7e7468512efe3ba7901a2
SHA3-384 hash: 85841be4c54d1581c865c6813c731c34495468aeda8429e025a6d1d99afa65e1777b16c8efbc749f39730c7e671dadf7
SHA1 hash: 1228f156c5ca1a3662299955e668b15748ce22ce
MD5 hash: 6b5570d1d620c372762aa321209afb81
humanhash: fix-sixteen-eight-xray
File name:XbbnPTCdmgned7070vjw0m.js
Download: download sample
Signature Vjw0rm
Create hunting rule
File size:18'818 bytes
First seen:2022-07-29 06:10:04 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:SNUSiIEkQK8FQCygAEwVQIGULzgdAxzGjjXJ0lcb/88jBDE+oq:SNUSiIXQK8FFI98jXecb/861E+oq
TLSH T13C824CD57CECFE1D8B4E15C342998CC4FFAA89595D505C1FEA21B20444A24A0EE7FABC
Reporter abuse_ch
Tags:js vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://185.157.162.75:7070/Vre

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://185.157.162.75:7070/Vre https://threatfox.abuse.ch/ioc/839935/

Intelligence

File Origin
# of uploads :
1
# of downloads :
295
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.PUA.JS.Obfus-2183.UNOFFICIAL
Create hunting rule

Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
evad.rans.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1042901
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
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
Creates multiple autostart registry keys
Delayed program exit found
Drops script or batch files to the startup folder
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Potential malicious VBS/JS script found (suspicious encoded strings)
Potential obfuscated javascript found
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sigma detected: Drops script at startup location
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Wscript called in batch mode (surpress errors)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 675392 Sample: XbbnPTCdmgned7070vjw0m.js Startdate: 29/07/2022 Architecture: WINDOWS Score: 100 72 Snort IDS alert for network traffic 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 Antivirus detection for URL or domain 2->76 78 8 other signatures 2->78 7 wscript.exe 14 2->7         started        11 wscript.exe 2 15 2->11         started        14 wscript.exe 12 2->14         started        16 2 other processes 2->16 process3 dnsIp4 62 C:\Users\user\AppData\...\temp4N8HDXHWUG.js, ASCII 7->62 dropped 90 Wscript called in batch mode (surpress errors) 7->90 18 wscript.exe 3 7->18         started        22 schtasks.exe 1 7->22         started        24 wscript.exe 7->24         started        70 185.157.162.75, 49778, 49779, 49780 OBE-EUROPEObenetworkEuropeSE Sweden 11->70 64 C:\Users\user\AppData\Roaming\ULSwNOSHuB.js, ASCII 11->64 dropped 66 XbbnPTCdmgned7070v....js:Zone.Identifier, ASCII 11->66 dropped 68 C:\Users\user\...\XbbnPTCdmgned7070vjw0m.js, ASCII 11->68 dropped 92 Benign windows process drops PE files 11->92 94 Drops script or batch files to the startup folder 11->94 96 Uses schtasks.exe or at.exe to add and modify task schedules 11->96 98 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 11->98 26 schtasks.exe 1 11->26         started        28 wscript.exe 1 11->28         started        100 System process connects to network (likely due to code injection or exploit) 14->100 102 Creates multiple autostart registry keys 14->102 34 2 other processes 14->34 30 schtasks.exe 1 16->30         started        32 schtasks.exe 1 16->32         started        36 2 other processes 16->36 file5 signatures6 process7 file8 54 C:\Users\user\AppData\...\invoice_a_202.exe, PE32 18->54 dropped 56 C:\Users\user\AppData\Roaming\bQiNiwTuYc.js, ASCII 18->56 dropped 80 Wscript called in batch mode (surpress errors) 18->80 38 invoice_a_202.exe 18->38         started        42 wscript.exe 18->42         started        44 conhost.exe 22->44         started        46 conhost.exe 26->46         started        48 conhost.exe 30->48         started        50 conhost.exe 32->50         started        52 conhost.exe 34->52         started        signatures9 process10 file11 58 C:\ProgramData\Remcos\windowsjx.exe, PE32 38->58 dropped 60 C:\Users\user\AppData\Local\...\install.vbs, data 38->60 dropped 82 Antivirus detection for dropped file 38->82 84 Contains functionalty to change the wallpaper 38->84 86 Machine Learning detection for dropped file 38->86 88 6 other signatures 38->88 signatures12
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fb2a1888f9073bccc52c7a99f544c0b2fdcc6de2f3d7e7468512efe3ba7901a2/
Threat name:
Script.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2022-07-29 05:46:06 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 26 (34.62%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7mvbrchza454zrjmpkm7krgawl64y3pc6pl6orufclx6hotzagra._file
Result
Malware family:
vjw0rm
Create hunting rule
Score:
  10/10
Tags:
family:remcos family:vjw0rm botnet:powerpoint collection persistence rat spyware stealer trojan worm
Link:
https://tria.ge/reports/220729-gxk4mafdhr/
Behaviour
Creates scheduled task(s)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Drops startup file
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Vjw0rm
Malware Config
C2 Extraction:
185.157.162.75:62186
http://185.157.162.75:7070
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fb2a1888f907/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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.

Rule name:SUSP_obfuscated_JS_obfuscatorio
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Author:@imp0rtp3
Description:Detect JS obfuscation done by the js obfuscator (often malicious)
Reference:https://obfuscator.io

File information

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

Comments