MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b397487c62e45e2349920dc8fb905ebd85cf95bdde81fbb1f7e6ebdf3dbaea1. 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: 14


Intelligence 14 IOCs YARA 7 File information Comments 1

SHA256 hash: 4b397487c62e45e2349920dc8fb905ebd85cf95bdde81fbb1f7e6ebdf3dbaea1
SHA3-384 hash: e89ea8d0be7616676c4b3f9ac2651fea26688c66d124c2ed0296515f5a1fce011f7a28a0bc88caf8dfc617fc930c8be1
SHA1 hash: 3f5d590d08236cab092e3bc12836e9f1ea9f29f1
MD5 hash: 51c906d4303e37f0cf8e137720bff0b2
humanhash: solar-michigan-quiet-muppet
File name:51c906d4303e37f0cf8e137720bff0b2
Download: download sample
Signature RemcosRAT
File size:94'208 bytes
First seen:2021-08-05 07:36:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d3a62971944197f0701c7049a9c739d1 (60 x RemcosRAT)
ssdeep 1536:AhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6Dra:GhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+V
Threatray 1'923 similar samples on MalwareBazaar
TLSH T1D393C713FA4AD0B2E42591F146426F31CEBCBC3736492173D38FCA41AD79892D456EAE
dhash icon 989894b49c9494f0 (43 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
e9e90714d9ff72d7dd375fddf9610e73.exe
Verdict:
Malicious activity
Analysis date:
2021-08-05 06:09:23 UTC
Tags:
trojan stealer rat avemaria remcos loader

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a process from a recently created file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Found malware configuration
Installs a global keyboard hook
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 460247 Sample: q9iOPbX22G Startdate: 05/08/2021 Architecture: WINDOWS Score: 100 34 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->34 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 7 other signatures 2->40 7 q9iOPbX22G.exe 1 5 2->7         started        11 chrome.exe 2->11         started        13 chrome.exe 2->13         started        process3 file4 26 C:\Users\user\AppData\Roaming\...\chrome.exe, PE32 7->26 dropped 28 C:\Users\user\...\chrome.exe:Zone.Identifier, ASCII 7->28 dropped 50 Contains functionality to detect virtual machines (IN, VMware) 7->50 52 Contains functionality to steal Chrome passwords or cookies 7->52 54 Contains functionality to capture and log keystrokes 7->54 56 2 other signatures 7->56 15 cmd.exe 1 7->15         started        signatures5 process6 signatures7 58 Uses ping.exe to sleep 15->58 60 Uses ping.exe to check the status of other devices and networks 15->60 18 chrome.exe 1 3 15->18         started        22 PING.EXE 1 15->22         started        24 conhost.exe 15->24         started        process8 dnsIp9 30 kohjguj.ydns.eu 203.159.80.108, 49720, 7003 LOVESERVERSGB Netherlands 18->30 42 Antivirus detection for dropped file 18->42 44 Multi AV Scanner detection for dropped file 18->44 46 Machine Learning detection for dropped file 18->46 48 4 other signatures 18->48 32 127.0.0.1 unknown unknown 22->32 signatures10
Threat name:
Win32.Backdoor.Rescoms
Status:
Malicious
First seen:
2021-07-30 06:23:00 UTC
AV detection:
44 of 46 (95.65%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:host persistence rat suricata
Behaviour
Runs ping.exe
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
suricata: ET MALWARE Remcos RAT Checkin 23
Malware Config
C2 Extraction:
kohjguj.ydns.eu:7003
Unpacked files
SH256 hash:
4b397487c62e45e2349920dc8fb905ebd85cf95bdde81fbb1f7e6ebdf3dbaea1
MD5 hash:
51c906d4303e37f0cf8e137720bff0b2
SHA1 hash:
3f5d590d08236cab092e3bc12836e9f1ea9f29f1
Detections:
win_remcos_auto win_remcos_g0
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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:Remcos
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:REMCOS_RAT_variants
Rule name:win_remcos_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information


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

Web download

RemcosRAT

Executable exe 4b397487c62e45e2349920dc8fb905ebd85cf95bdde81fbb1f7e6ebdf3dbaea1

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-08-05 07:36:53 UTC

url : hxxp://195.133.40.188/chrome.exe