MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050
SHA3-384 hash: 0459740fc4a825a4c8d4a319db38af31cd37e001b112b2ff7992103a434a3306e646b5bd3174235482b798db7ec4ddd6
SHA1 hash: 9aaafffc7366b6553229d16648d2acfab2e6746d
MD5 hash: ebad270e652bbd0d611dbb82f7637aac
humanhash: freddie-purple-rugby-kilo
File name:SecuriteInfo.com.Generic.mg.ebad270e652bbd0d.27907
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'970'280 bytes
First seen:2020-12-19 09:59:58 UTC
Last seen:2020-12-19 10:32:18 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 24576:v0dlkczc5JfOiAWQl+TsXsCtwfSvwDcCL0rnq:snc5Jp2QV
Threatray 1'249 similar samples on MalwareBazaar
TLSH CE958C51F840355F768A81B09FD766ECA1D6311A253217399C2328BDDA1E24B7CEF8B3
Reporter SecuriteInfoCom
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2019-2020_SOA_Payment_19Dec2020.xlsx
Verdict:
Malicious activity
Analysis date:
2020-12-19 06:41:12 UTC
Tags:
encrypted exploit CVE-2017-11882 loader rat remcos keylogger
Link:
https://app.any.run/tasks/611294ca-23b8-49dd-89f9-6843514c65b7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/108526/
Detection(s):
SecuriteInfo.com.Generic.mg.ebad270e652bbd0d.27907.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Adding an access-denied ACE
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
DNS request
Creating a file
Connection attempt
Sending a UDP request
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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:
100 / 100
Link:
https://www.joesandbox.com/analysis/566763
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
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 332465 Sample: SecuriteInfo.com.Generic.mg... Startdate: 19/12/2020 Architecture: WINDOWS Score: 100 59 swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu 2->59 65 Multi AV Scanner detection for domain / URL 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 Multi AV Scanner detection for submitted file 2->69 71 5 other signatures 2->71 11 SecuriteInfo.com.Generic.mg.ebad270e652bbd0d.exe 2 2->11         started        14 vlc.exe 2 2->14         started        16 vlc.exe 2 2->16         started        signatures3 process4 signatures5 81 Contains functionality to steal Chrome passwords or cookies 11->81 83 Contains functionality to capture and log keystrokes 11->83 85 Contains functionality to inject code into remote processes 11->85 87 Contains functionality to steal Firefox passwords or cookies 11->87 18 SecuriteInfo.com.Generic.mg.ebad270e652bbd0d.exe 4 4 11->18         started        21 WerFault.exe 23 9 11->21         started        24 SecuriteInfo.com.Generic.mg.ebad270e652bbd0d.exe 11->24         started        89 Hides threads from debuggers 14->89 26 WerFault.exe 14->26         started        28 vlc.exe 14->28         started        30 vlc.exe 14->30         started        32 vlc.exe 14->32         started        34 vlc.exe 16->34         started        process6 dnsIp7 53 C:\Users\user\AppData\Roaming\vlc.exe, PE32 18->53 dropped 55 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 18->55 dropped 36 wscript.exe 1 18->36         started        61 192.168.2.1 unknown unknown 21->61 57 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 26->57 dropped file8 process9 process10 38 cmd.exe 1 36->38         started        process11 40 vlc.exe 2 38->40         started        43 conhost.exe 38->43         started        signatures12 73 Multi AV Scanner detection for dropped file 40->73 75 Machine Learning detection for dropped file 40->75 77 Contains functionality to steal Chrome passwords or cookies 40->77 79 3 other signatures 40->79 45 vlc.exe 2 1 40->45         started        48 WerFault.exe 40->48         started        process13 dnsIp14 63 swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu 192.253.246.143, 2017 LEASEWEB-USA-NYC-11US United States 45->63 51 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 48->51 dropped file15
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-19 06:59:09 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uinrdpl3rhewdjz4egcpsw46w2mb5cvf4bwadgihbl7erv556bia._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
843326e8aabda8025975ae55e6d36fcd8bb79e2e1a5f25e86303b82f16c3bac5
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'239 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201219-btle79w2q2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
ServiceHost packer
Remcos
Malware Config
C2 Extraction:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017
Unpacked files
SH256 hash:
a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050
MD5 hash:
ebad270e652bbd0d611dbb82f7637aac
SHA1 hash:
9aaafffc7366b6553229d16648d2acfab2e6746d
Link:
https://www.unpac.me/results/26ae5111-73f0-40fa-b08c-46e175f55ff5/
SH256 hash:
e8929e62edc6fe1284fd331e4839d1dd59957ea729c5572c2456d0c5d7a5ff90
MD5 hash:
b0d0ea6149b048339416b664575b1adf
SHA1 hash:
d796480fcbbefcb84321c3ad0f77f5b62c0ec5b1
Link:
https://www.unpac.me/results/26ae5111-73f0-40fa-b08c-46e175f55ff5/
SH256 hash:
7edd9642f999a3942f43667c24a9284b1bacdb22fe10f645e942001c62867728
MD5 hash:
1200e07cae849824241dfd60613b8215
SHA1 hash:
ac0344f23c278619b4063526a743d1b208bc5894
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/26ae5111-73f0-40fa-b08c-46e175f55ff5/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050

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 a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/929851/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/108526/

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