MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a418e084b49b740a94d307baf45d67ac25db462fdeb80065fb60ffeb197273f. 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: 11


Intelligence 11 IOCs YARA 7 File information Comments

SHA256 hash: 5a418e084b49b740a94d307baf45d67ac25db462fdeb80065fb60ffeb197273f
SHA3-384 hash: 0fa7d99c9dd9e9ae48e63fb35ed4ece6157e1196aeb5e2e16e7412feed54b6bd49cc8cc1653e5074bba22eaa610e736a
SHA1 hash: 5f3fe8364d21816e89cd07e2a8cb71e0af6789fc
MD5 hash: 649aafe638358b6b3936fff9dc557025
humanhash: item-utah-tango-chicken
File name:649aafe638358b6b3936fff9dc557025.exe
Download: download sample
Signature RemcosRAT
File size:402'944 bytes
First seen:2020-10-18 14:50:12 UTC
Last seen:2020-10-18 15:34:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:GNrxUB818SOMWCxV7cBqAq6GkpsP7kddV:GHUB87OMQwAUkikd
Threatray 1'151 similar samples on MalwareBazaar
TLSH 8E84130D73AE43EBFE6FC1B51062140A27B4CD416023CB8CAE45C4FB7357B611E962AA
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
185.189.112.27:24311

Intelligence


File Origin
# of uploads :
2
# of downloads :
132
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Launching a process
Sending a UDP request
DNS request
Reading critical registry keys
Creating a file in the %temp% directory
Deleting a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Sending a TCP request to an infection source
Stealing user critical data
Unauthorized injection to a system process
Result
Threat name:
Detection:
malicious
Classification:
phis.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
Drops PE files to the user root directory
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Sigma detected: Remcos
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 299787 Sample: pepCxYJsB0.exe Startdate: 18/10/2020 Architecture: WINDOWS Score: 100 40 Malicious sample detected (through community Yara rule) 2->40 42 Detected Remcos RAT 2->42 44 Yara detected Remcos RAT 2->44 46 2 other signatures 2->46 7 pepCxYJsB0.exe 1 3 2->7         started        11 settingswin.exe 1 2->11         started        13 settingswin.exe 2->13         started        process3 file4 32 C:\Users\user\settingswin.exe, PE32 7->32 dropped 34 C:\Users\...\settingswin.exe:Zone.Identifier, ASCII 7->34 dropped 36 C:\Users\user\AppData\...\pepCxYJsB0.exe.log, ASCII 7->36 dropped 48 Drops PE files to the user root directory 7->48 50 Writes to foreign memory regions 7->50 52 Maps a DLL or memory area into another process 7->52 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 7->54 15 RegAsm.exe 7->15         started        18 RegAsm.exe 2 7->18         started        56 Machine Learning detection for dropped file 11->56 21 RegAsm.exe 11->21         started        23 RegAsm.exe 13->23         started        signatures5 process6 dnsIp7 62 Contains functionality to steal Chrome passwords or cookies 15->62 64 Contains functionality to capture and log keystrokes 15->64 66 Contains functionality to inject code into remote processes 15->66 68 Contains functionality to steal Firefox passwords or cookies 15->68 38 ndma.chickenkiller.com 185.189.112.27, 24311, 49731, 49732 M247GB United Kingdom 18->38 70 Injects a PE file into a foreign processes 18->70 25 RegAsm.exe 13 18->25         started        28 RegAsm.exe 1 18->28         started        30 RegAsm.exe 18->30         started        signatures8 process9 signatures10 58 Tries to harvest and steal browser information (history, passwords, etc) 25->58 60 Tries to steal Instant Messenger accounts or passwords 28->60
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Status:
Malicious
First seen:
2020-10-18 14:52:06 UTC
AV detection:
21 of 27 (77.78%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
persistence rat family:remcos spyware
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Remcos
Malware Config
C2 Extraction:
ndma.chickenkiller.com:24311
Unpacked files
SH256 hash:
5a418e084b49b740a94d307baf45d67ac25db462fdeb80065fb60ffeb197273f
MD5 hash:
649aafe638358b6b3936fff9dc557025
SHA1 hash:
5f3fe8364d21816e89cd07e2a8cb71e0af6789fc
SH256 hash:
d483fe516869bb9c25d9ce01191e60d3c677f49c435ab7a4eeb499699beda8e8
MD5 hash:
fc1f2305c962bceb922ef52f7051841a
SHA1 hash:
219786054d78ef014659dd5d9ef960907cda1075
SH256 hash:
601850ae77d1180e5bc17c6089190476ae60db33d026478b95ad639d266d64a7
MD5 hash:
0b465e7c94038d8f2eb4dc1366ad6ca2
SHA1 hash:
f5083deb81a96e6bc2616dca0a9e0d583e45d3a1
Detections:
win_remcos_g0 win_remcos_auto
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:win_remcos_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_remcos_g0
Author:Daniel Plohmann <daniel.plohmann<at>fkie.fraunhofer.de>

File information


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

Web download

RemcosRAT

Executable exe 5a418e084b49b740a94d307baf45d67ac25db462fdeb80065fb60ffeb197273f

(this sample)

  
Delivery method
Distributed via web download

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