MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f92a647cfb8fe92f7d6713806e532dfcae18c9833da6f0303b9d284bfae1c21c. 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: 7


Intelligence 7 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f92a647cfb8fe92f7d6713806e532dfcae18c9833da6f0303b9d284bfae1c21c
SHA3-384 hash: 370a73f3609fe9fa1996d74f8a4de0a765e00c886ea34430a8b0e110e0d80539853b10676c860a22c01b6d6d4347aa6f
SHA1 hash: 2038ddc90ab19d5b08a746d68a17ea389385f3a3
MD5 hash: c8e35a3f88d887842ff5308b6ab0f011
humanhash: lima-ink-oregon-ack
File name:c8e35a3f88d887842ff5308b6ab0f011.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:21'000 bytes
First seen:2020-12-15 17:37:23 UTC
Last seen:2020-12-15 19:32:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:MoLeaKAhP7s+frKIpYbFTTpj26zD0iPKgV0vIAcKrDgf2hA:ZChAF1rKLbFTTpj22wJvxrUf2hA
TLSH 7592E9182B48B912ED7BD7307623C5A7373167B272534E4FE556824CCA836A528CDECB
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
189
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c8e35a3f88d887842ff5308b6ab0f011.exe
Verdict:
Malicious activity
Analysis date:
2020-12-15 17:58:23 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/27618045-1f73-405c-9e0f-191eb1795a62

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/108204/
Detection(s):
SecuriteInfo.com.Trojan.DownloaderNET.105.381.19052.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Sending a UDP request
Creating a file
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Deleting a recently created file
Sending a custom TCP request
Sending a TCP request to an infection source
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Result
Verdict:
UNKNOWN
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:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/563586
Signature
Connects to a pastebin service (likely for C&C)
Contains functionality to capture and log keystrokes
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
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 330878 Sample: ph25rXSnnl.exe Startdate: 15/12/2020 Architecture: WINDOWS Score: 92 79 Malicious sample detected (through community Yara rule) 2->79 81 Detected Remcos RAT 2->81 83 Yara detected Remcos RAT 2->83 85 2 other signatures 2->85 11 ph25rXSnnl.exe 15 4 2->11         started        16 vlc.exe 3 2->16         started        18 vlc.exe 2->18         started        process3 dnsIp4 77 hastebin.com 104.24.126.89, 443, 49711, 49717 CLOUDFLARENETUS United States 11->77 71 C:\Users\user\AppData\...\ph25rXSnnl.exe.log, Unknown 11->71 dropped 93 Contains functionality to steal Chrome passwords or cookies 11->93 95 Contains functionality to capture and log keystrokes 11->95 97 Contains functionality to inject code into remote processes 11->97 99 Contains functionality to steal Firefox passwords or cookies 11->99 20 ph25rXSnnl.exe 4 4 11->20         started        23 cmd.exe 1 11->23         started        25 cmd.exe 16->25         started        27 vlc.exe 16->27         started        29 cmd.exe 18->29         started        31 vlc.exe 18->31         started        file5 signatures6 process7 file8 67 C:\Users\user\AppData\Roaming\vlc.exe, PE32 20->67 dropped 69 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 20->69 dropped 33 wscript.exe 1 20->33         started        35 conhost.exe 23->35         started        37 timeout.exe 1 23->37         started        39 conhost.exe 25->39         started        41 timeout.exe 25->41         started        43 conhost.exe 29->43         started        45 timeout.exe 29->45         started        process9 process10 47 cmd.exe 1 33->47         started        process11 49 vlc.exe 14 4 47->49         started        54 conhost.exe 47->54         started        dnsIp12 73 hastebin.com 49->73 65 C:\Users\user\AppData\Local\...\vlc.exe.log, ASCII 49->65 dropped 87 Contains functionality to steal Chrome passwords or cookies 49->87 89 Contains functionality to capture and log keystrokes 49->89 91 Contains functionality to steal Firefox passwords or cookies 49->91 56 cmd.exe 1 49->56         started        58 vlc.exe 49->58         started        file13 signatures14 process15 dnsIp16 61 conhost.exe 56->61         started        63 timeout.exe 1 56->63         started        75 swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu 192.253.246.141, 2017, 49730 LEASEWEB-USA-NYC-11US United States 58->75 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f92a647cfb8fe92f7d6713806e532dfcae18c9833da6f0303b9d284bfae1c21c/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-12-15 17:38:07 UTC
AV detection:
13 of 28 (46.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7evgi7h3r7us67lhcoag4uzn7sxbrsmdhwtpamb3tuuex6xbyioa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201215-le2vfq9g82/
Behaviour
Delays execution with timeout.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017
Unpacked files
SH256 hash:
f92a647cfb8fe92f7d6713806e532dfcae18c9833da6f0303b9d284bfae1c21c
MD5 hash:
c8e35a3f88d887842ff5308b6ab0f011
SHA1 hash:
2038ddc90ab19d5b08a746d68a17ea389385f3a3
Link:
https://www.unpac.me/results/1ad1ff65-cecb-4422-a128-10c0e8b7135b/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/f92a647cfb8fe92f7d6713806e532dfcae18c9833da6f0303b9d284bfae1c21c

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Web download

RemcosRAT

Executable exe f92a647cfb8fe92f7d6713806e532dfcae18c9833da6f0303b9d284bfae1c21c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/917470/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/108204/

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