MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5ae2e0f9a8f1c50e21ea93f4a195097753cd16436ffa4e946add38da873c8cb. 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



RemcosRAT


Vendor detections: 9


Intelligence 9 IOCs YARA 1 File information Comments

SHA256 hash: a5ae2e0f9a8f1c50e21ea93f4a195097753cd16436ffa4e946add38da873c8cb
SHA3-384 hash: 64723a7645953f29ba2a50b008fb771b2d44f469eb92cfef448ba789072f09f38f1c273e0189bb190abb20a41ad4126f
SHA1 hash: b52302f3a0767b4a72632e75b2b023e985a79a47
MD5 hash: 504515c26f70c10c10db6bc84dadd3c4
humanhash: kitten-zebra-leopard-july
File name:Appraisal.reportl1100445269900.vbs
Download: download sample
Signature RemcosRAT
File size:939 bytes
First seen:2021-05-03 12:56:36 UTC
Last seen:2021-05-03 13:01:08 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12:75ghYN3v/2B7Ue3R5FJQDFz1lcM8TCXBaRBq77wHx7WFqMDgeJre6ZN3ZCBbpBog:7iBNyd8TCRaRBEux7WFtvxe6dCBo53yb
Threatray 186 similar samples on MalwareBazaar
TLSH E211ED11370ACB2B322F96664590FC79A1506A14949C7349883241D32BBC6B7DF62CD7
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence


File Origin
# of uploads :
2
# of downloads :
164
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
DNS request
Sending a custom TCP request
Sending a UDP request
Creating a file
Creating a process from a recently created file
Enabling the 'hidden' option for recently created files
Connection attempt
Sending a TCP request to an infection source
Forced shutdown of a system process
Creating a file in the %AppData% subdirectories
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
SUSPICIOUS
Result
Threat name:
Remcos Njrat
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to log keystrokes (.Net Source)
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an undocumented autostart registry key
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Njrat
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 402862 Sample: Appraisal.reportl1100445269... Startdate: 03/05/2021 Architecture: WINDOWS Score: 100 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 Detected Remcos RAT 2->69 71 10 other signatures 2->71 9 wscript.exe 1 2->9         started        process3 signatures4 83 VBScript performs obfuscated calls to suspicious functions 9->83 85 Wscript starts Powershell (via cmd or directly) 9->85 12 powershell.exe 14 23 9->12         started        process5 dnsIp6 49 archive.org 207.241.224.2, 443, 49722 INTERNET-ARCHIVEUS United States 12->49 51 ia601506.us.archive.org 207.241.227.116, 443, 49730 INTERNET-ARCHIVEUS United States 12->51 53 4 other IPs or domains 12->53 87 Creates an undocumented autostart registry key 12->87 16 powershell.exe 24 12->16         started        19 conhost.exe 12->19         started        signatures7 process8 signatures9 55 Writes to foreign memory regions 16->55 57 Injects a PE file into a foreign processes 16->57 21 MSBuild.exe 2 2 16->21         started        26 MSBuild.exe 16->26         started        28 MSBuild.exe 3 16->28         started        30 7 other processes 16->30 process10 dnsIp11 45 185.19.85.168, 1723, 49733, 49738 DATAWIRE-ASCH Switzerland 21->45 39 C:\Users\user\AppData\Roaming\...\logs.dat, data 21->39 dropped 73 Contains functionality to steal Chrome passwords or cookies 21->73 75 Contains functionality to inject code into remote processes 21->75 77 Contains functionality to steal Firefox passwords or cookies 21->77 81 2 other signatures 21->81 32 MSBuild.exe 21->32         started        35 MSBuild.exe 21->35         started        37 MSBuild.exe 21->37         started        79 Delayed program exit found 26->79 41 C:\Users\user\AppData\...\MSBuild.exe.log, ASCII 28->41 dropped 47 14.191.50.101, 49746, 49752, 49753 VNPT-AS-VNVNPTCorpVN Viet Nam 30->47 43 C:\Users\user\AppData\...\MSBuild.exe.log, ASCII 30->43 dropped file12 signatures13 process14 signatures15 59 Tries to steal Instant Messenger accounts or passwords 32->59 61 Tries to steal Mail credentials (via file access) 32->61 63 Tries to harvest and steal browser information (history, passwords, etc) 35->63
Threat name:
Script-WScript.Downloader.Heuristic
Status:
Malicious
First seen:
2021-05-03 12:57:12 UTC
AV detection:
4 of 47 (8.51%)
Threat level:
  2/5
Result
Malware family:
Score:
  10/10
Tags:
family:njrat family:remcos rat trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Blocklisted process makes network request
Remcos
njRAT/Bladabindi
Malware Config
C2 Extraction:
185.19.85.168:1723
Dropper Extraction:
https://ia601406.us.archive.org/32/items/all_20210503_20210503_1155/ALL.TXT
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:PowerShell_Case_Anomaly
Author:Florian Roth
Description:Detects obfuscated PowerShell hacktools
Reference:https://twitter.com/danielhbohannon/status/905096106924761088

File information


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

Comments