MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a9e4f5dfdeda56d0151d01880899d9241815a35892ed87b8b65d44fecc9ba2f. 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: 8


Intelligence 8 IOCs YARA 8 File information Comments

SHA256 hash: 6a9e4f5dfdeda56d0151d01880899d9241815a35892ed87b8b65d44fecc9ba2f
SHA3-384 hash: 5d94287523e9280e0d860ec64895cf3e700fa602e23cca593a023d39d1a3acf289251b96f13ebae434cebcab381ad0a9
SHA1 hash: 45032ab92cf97264507687e186930294f141d233
MD5 hash: 87b7886d9fbb77a376acc19538b89f94
humanhash: emma-north-papa-sierra
File name:90987948.exe
Download: download sample
Signature RemcosRAT
File size:204'800 bytes
First seen:2020-11-26 01:05:49 UTC
Last seen:2020-11-26 02:38:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 3072:Ties1JwHvwGNMU7QBQuObQP94JeZAi34eQrDJkKF+zsbrjZ+sygEEhAhfg3u7bEx:2HGO+QBfPmJA2nWKF+zsQsjd+geHEJ
Threatray 1'168 similar samples on MalwareBazaar
TLSH E71402059EAD6EBFF29DBE7FADC001E7EAF573072AD3F19E18267085011169481A23D1
Reporter FORMALITYDE
Tags:exe RemcosRAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Enabling the 'hidden' option for recently created files
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Sending a TCP request to an infection source
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:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
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
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 322857 Sample: 90987948.exe Startdate: 26/11/2020 Architecture: WINDOWS Score: 100 36 Malicious sample detected (through community Yara rule) 2->36 38 Multi AV Scanner detection for dropped file 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 8 other signatures 2->42 6 90987948.exe 1 6 2->6         started        10 vlc.exe 2 2->10         started        12 vlc.exe 3 2->12         started        process3 file4 24 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 6->24 dropped 26 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 6->26 dropped 28 C:\Users\user\AppData\...\90987948.exe.log, ASCII 6->28 dropped 44 Contains functionality to steal Chrome passwords or cookies 6->44 46 Contains functionality to capture and log keystrokes 6->46 48 Contains functionality to inject code into remote processes 6->48 50 Contains functionality to steal Firefox passwords or cookies 6->50 14 90987948.exe 2 3 6->14         started        18 90987948.exe 6->18         started        52 Injects a PE file into a foreign processes 10->52 20 vlc.exe 10->20         started        30 C:\Users\user\AppData\Local\...\vlc.exe.log, ASCII 12->30 dropped 22 vlc.exe 12->22         started        signatures5 process6 dnsIp7 34 finishfarm.duckdns.org 185.244.30.223, 49737, 8760 DAVID_CRAIGGG Netherlands 14->34 32 C:\Users\user\AppData\Roaming\...\logs.dat, data 14->32 dropped file8
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2020-11-26 01:06:05 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos persistence rat
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
finishfarm.duckdns.org:8760
Unpacked files
SH256 hash:
6a9e4f5dfdeda56d0151d01880899d9241815a35892ed87b8b65d44fecc9ba2f
MD5 hash:
87b7886d9fbb77a376acc19538b89f94
SHA1 hash:
45032ab92cf97264507687e186930294f141d233
SH256 hash:
681fc0a5119de2935186b2d5e5fc1ca9d7e13bf990d6bd11913dddc5eaf687a3
MD5 hash:
64cd79e5b1503ff17cc3edcf3c114e33
SHA1 hash:
6f63cc80bdb12c127eab4221ed66260595293e35
Detections:
win_remcos_g0 win_remcos_auto
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
SH256 hash:
f55ba765aa4ec66782bdc32e0a32386643355ad632a10a2b9c3ec3c1eb746b1a
MD5 hash:
78d4aecf2c49df69ae6cfccd24d9d8f4
SHA1 hash:
f49cb34b443c4081439872ceff4bf782efd0300e
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:ach_RemcosRAT
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Keylog_bin_mem
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:win_remcos_auto
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.

Malspam

RemcosRAT

Executable exe 6a9e4f5dfdeda56d0151d01880899d9241815a35892ed87b8b65d44fecc9ba2f

(this sample)

  
Delivery method
Distributed via e-mail attachment

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