MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa
SHA3-384 hash: 29965d7be3e182458d8eb4c0d8288865de35be4969cad85e4782c7c4cbb34192714db284551ddea872a7448984d5886f
SHA1 hash: e24c39b08af18bfaebe5b140553958ae41fb8e03
MD5 hash: 5182fffc0daa2c8835042bc1794a3a91
humanhash: michigan-india-yellow-table
File name:84ab43f7eda35ae038b199d3a3586b77.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:791'552 bytes
First seen:2021-01-31 07:44:46 UTC
Last seen:2021-01-31 09:59:11 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:ZR7lwNJr9ewyiazSLOWqGd0IuNEExaOzoBmI1t5oBXkl/2eQB/W2nbSoyTLgXsq6:n76M53GpuNEQaO0J6B0l0WKeoyTL
Threatray 1'482 similar samples on MalwareBazaar
TLSH 27F4129833687BDFC87BD8B09D681C74E560B9BE931B475B910B0599EA0F58BCF041E2
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: slot0.groveressentials.xyz
Sending IP: 203.159.80.67
From: Sales2- Order <order@groveressentials.xyz>
Subject: rfq/2020/QUOTATION 20200130 NEW ORDER
Attachment: file.zip (contains "84ab43f7eda35ae038b199d3a3586b77.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
164
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
84ab43f7eda35ae038b199d3a3586b77.exe
Verdict:
Malicious activity
Analysis date:
2021-01-31 07:47:30 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/8b2d7804-176f-453b-86f7-4645465efeb0

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/114919/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/594709
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Contains functionality to capture and log keystrokes
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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
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
PE file contains section with special chars
PE file has nameless sections
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 346392 Sample: 84ab43f7eda35ae038b199d3a35... Startdate: 31/01/2021 Architecture: WINDOWS Score: 100 70 sandshoe.myfirewall.org 2->70 82 Malicious sample detected (through community Yara rule) 2->82 84 Multi AV Scanner detection for submitted file 2->84 86 Detected Remcos RAT 2->86 88 9 other signatures 2->88 14 84ab43f7eda35ae038b199d3a3586b77.exe 3 2->14         started        18 svchosts.exe 2 2->18         started        20 svchosts.exe 2->20         started        signatures3 process4 file5 58 84ab43f7eda35ae038b199d3a3586b77.exe.log, ASCII 14->58 dropped 96 Contains functionality to steal Chrome passwords or cookies 14->96 98 Contains functionality to capture and log keystrokes 14->98 100 Contains functionality to inject code into remote processes 14->100 104 2 other signatures 14->104 22 84ab43f7eda35ae038b199d3a3586b77.exe 4 5 14->22         started        102 Injects a PE file into a foreign processes 18->102 25 svchosts.exe 18->25         started        27 svchosts.exe 20->27         started        signatures6 process7 file8 54 C:\Users\user\AppData\...\svchosts.exe, PE32 22->54 dropped 56 C:\Users\...\svchosts.exe:Zone.Identifier, ASCII 22->56 dropped 29 wscript.exe 1 22->29         started        process9 process10 31 cmd.exe 1 29->31         started        process11 33 svchosts.exe 3 31->33         started        36 conhost.exe 31->36         started        signatures12 76 Multi AV Scanner detection for dropped file 33->76 78 Machine Learning detection for dropped file 33->78 80 Injects a PE file into a foreign processes 33->80 38 svchosts.exe 4 3 33->38         started        42 svchosts.exe 33->42         started        process13 dnsIp14 72 sandshoe.myfirewall.org 79.134.225.105, 2404, 49746, 49748 FINK-TELECOM-SERVICESCH Switzerland 38->72 90 Writes to foreign memory regions 38->90 92 Allocates memory in foreign processes 38->92 94 Injects a PE file into a foreign processes 38->94 44 svchost.exe 2 12 38->44         started        signatures15 process16 dnsIp17 74 192.168.2.1 unknown unknown 44->74 47 iexplore.exe 44->47         started        process18 process19 49 iexplore.exe 47->49         started        52 iexplore.exe 47->52         started        dnsIp20 60 avatars.githubusercontent.com 49->60 62 github.com 140.82.121.3, 443, 49760, 49761 GITHUBUS United States 49->62 64 github.map.fastly.net 151.101.0.133, 443, 49764, 49765 FASTLYUS United States 49->64 66 avatars.githubusercontent.com 52->66 68 sandshoe.myfirewall.org 52->68
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-01-30 15:04:18 UTC
AV detection:
11 of 46 (23.91%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mv4w3ps6bpangeenergzzfzbxwcahrqqdxafuk42vnit62np5ova._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
5ab68910c53ccaea0aa6c9e51fa8ad92433cba369163f99f636973b32abda555
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964
RemcosRAT
d246f2f9a393a321c7a39217968f742126522994bc68b56018f25937b6b1039a
RemcosRAT
ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc
RemcosRAT
f43a96ccf1d23d7dda1abbc2bea16ecbb2fb43b2f05e4015ff69c02e2c144ab2
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'472 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210131-hmd9xpdhqx/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
sandshoe.myfirewall.org:2404
Unpacked files
SH256 hash:
65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa
MD5 hash:
5182fffc0daa2c8835042bc1794a3a91
SHA1 hash:
e24c39b08af18bfaebe5b140553958ae41fb8e03
Link:
https://www.unpac.me/results/a4fb1588-7914-4108-b6bc-265d82eaee7a/
SH256 hash:
025c3342834cf57c87b59d4880f33ee3ea354e1cccb5cfced81624dde65f8226
MD5 hash:
536f263853ed851ac321d43feb730749
SHA1 hash:
68c0312fc760a43a34eda701ac43f8391e8c9604
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/a4fb1588-7914-4108-b6bc-265d82eaee7a/
Parent samples :
65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa
0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605
522a495b289cf22898f762f18571b8839194e6232cb80fbb28dc426cbeeee323
SH256 hash:
a2a0bbbe8c9ee88441356010f63455c50dfcafe663db757bbc453c815c51d720
MD5 hash:
11e80c54bfeff7f0c120dae46df0a8be
SHA1 hash:
d597b9b0dcac06f0aa00a931bb90de8eba564651
Link:
https://www.unpac.me/results/a4fb1588-7914-4108-b6bc-265d82eaee7a/
SH256 hash:
1c8aa4625a21132fb5899c6de1f5475087e0856ac05c25b37da4afbc0717fd97
MD5 hash:
41649dbf38faeabb665bf1682fd10a96
SHA1 hash:
eb09acda6ce6c2fbb3f39823645c9699f0e08d7d
Link:
https://www.unpac.me/results/a4fb1588-7914-4108-b6bc-265d82eaee7a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.75
Link:
https://yomi.yoroi.company/submissions/65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa

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:SUSP_Modified_SystemExeFileName_in_File
Create hunting rule
Author:Florian Roth
Description:Detecst a variant of a system file name often used by attackers to cloak their activity
Reference:https://www.symantec.com/blogs/threat-intelligence/seedworm-espionage-group
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.

Malspam

RemcosRAT

unknown f93ff823cce84c4301ee3fe1fd97695ff357e3a442dce2805c87b44555bb5a83

RemcosRAT

Executable exe 65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa

(this sample)

  
Dropped by
MD5 a17290406cd350b20c5d66114e6e3fe2
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 f93ff823cce84c4301ee3fe1fd97695ff357e3a442dce2805c87b44555bb5a83
Cape
Cape
https://www.capesandbox.com/analysis/114919/

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