MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5705f860865c9fd9eb6a5609d3ea183b201e72fa45db0b06be00a4a6f665f82a. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5705f860865c9fd9eb6a5609d3ea183b201e72fa45db0b06be00a4a6f665f82a
SHA3-384 hash: 759c7afca5f5a0f59c83e3b2aa59d7f1908af727a0177ea6ffc03e9e64bfb4532587eec8df3722165d216fd4ec08c548
SHA1 hash: af273bc182f0c492520811da54165534dcf89967
MD5 hash: 104064d4c0b681c9a7ae1f0c00fbff49
humanhash: green-shade-charlie-yellow
File name:Quote#SO2021010197.pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'547'264 bytes
First seen:2021-01-25 19:03:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'076 x AgentTesla, 20'040 x Formbook, 12'353 x SnakeKeylogger)
ssdeep 1536:LRO/HUKVTafQTq3fUSubgAZcgOWWWWWIp8NG86iUSgqgXH6z:Q3+sSXgOWWWWWhN5J9gqgX
Threatray 1'455 similar samples on MalwareBazaar
TLSH 3165741ADEB3A985CC846B16C89ADACD0F776795187CF8056449339EF2876420F20FB7
Reporter James_inthe_box
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
185
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quote#SO2021010197.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-01-25 19:04:40 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/6bb6d41b-aefe-4492-a611-339815989f70

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
DLAgent02
Create hunting rule
Link:
https://www.capesandbox.com/analysis/113771/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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
Unauthorized injection to a recently created process by context flags manipulation
Connection attempt to an infection source
Enabling autorun by creating a file
Enabling autorun
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/589852
Signature
.NET source code contains very large strings
.NET source code references suspicious native API functions
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
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
Drops PE files to the startup folder
Initial sample is a PE file and has a suspicious name
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
Sigma detected: Remcos
Sigma detected: Suspicious Double Extension
Sigma detected: Suspicious Svchost Process
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 343973 Sample: Quote#SO2021010197.pdf.exe Startdate: 25/01/2021 Architecture: WINDOWS Score: 100 90 Malicious sample detected (through community Yara rule) 2->90 92 Multi AV Scanner detection for dropped file 2->92 94 Multi AV Scanner detection for submitted file 2->94 96 11 other signatures 2->96 13 Quote#SO2021010197.pdf.exe 3 2->13         started        17 Quote#SO2021010197.pdf.exe 2->17         started        19 system32.exe 2->19         started        21 3 other processes 2->21 process3 file4 82 C:\Users\...\Quote#SO2021010197.pdf.exe.log, ASCII 13->82 dropped 114 Contains functionality to steal Chrome passwords or cookies 13->114 116 Contains functionality to capture and log keystrokes 13->116 118 Drops PE files to the startup folder 13->118 122 2 other signatures 13->122 23 Quote#SO2021010197.pdf.exe 2 4 13->23         started        120 Injects a PE file into a foreign processes 17->120 27 Quote#SO2021010197.pdf.exe 17->27         started        29 system32.exe 19->29         started        31 Quote#SO2021010197.pdf.exe 2 21->31         started        33 Quote#SO2021010197.pdf.exe 21->33         started        signatures5 process6 file7 78 C:\Users\user\...\Quote#SO2021010197.pdf.exe, PE32 23->78 dropped 80 Quote#SO2021010197...exe:Zone.Identifier, ASCII 23->80 dropped 106 Creates an undocumented autostart registry key 23->106 108 Injects a PE file into a foreign processes 23->108 35 Quote#SO2021010197.pdf.exe 3 5 23->35         started        110 Creates autostart registry keys with suspicious names 27->110 112 Creates multiple autostart registry keys 27->112 38 Quote#SO2021010197.pdf.exe 27->38         started        40 Quote#SO2021010197.pdf.exe 31->40         started        42 Quote#SO2021010197.pdf.exe 33->42         started        signatures8 process9 file10 74 C:\Users\user\AppData\...\system32.exe, PE32 35->74 dropped 76 C:\Users\...\system32.exe:Zone.Identifier, ASCII 35->76 dropped 44 wscript.exe 1 35->44         started        46 wscript.exe 40->46         started        process11 process12 48 cmd.exe 1 44->48         started        50 cmd.exe 46->50         started        process13 52 system32.exe 3 48->52         started        55 conhost.exe 48->55         started        57 system32.exe 50->57         started        59 conhost.exe 50->59         started        signatures14 98 Multi AV Scanner detection for dropped file 52->98 100 Detected unpacking (creates a PE file in dynamic memory) 52->100 102 Machine Learning detection for dropped file 52->102 104 Drops PE files to the startup folder 52->104 61 system32.exe 1 4 52->61         started        65 system32.exe 57->65         started        process15 file16 84 C:\Users\user\AppData\...\system32.exe, PE32 61->84 dropped 86 C:\Users\...\system32.exe:Zone.Identifier, ASCII 61->86 dropped 124 Creates multiple autostart registry keys 61->124 126 Injects a PE file into a foreign processes 61->126 67 system32.exe 61->67         started        70 system32.exe 65->70         started        signatures17 process18 dnsIp19 88 91.193.75.185, 1989, 49735, 49736 DAVID_CRAIGGG Serbia 67->88 72 svchost.exe 67->72         started        process20
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5705f860865c9fd9eb6a5609d3ea183b201e72fa45db0b06be00a4a6f665f82a/
Threat name:
ByteCode-MSIL.Trojan.Artemis
Create hunting rule
Status:
Malicious
First seen:
2021-01-25 13:27:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
15 of 28 (53.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k4c7qyeglsp5t23kkye5h2qyhmqb44x2ixnqwbv6acskn5tf7ava._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
+ 1'445 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/210125-b5fwxtd5xs/
Behaviour
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies WinLogon for persistence
Remcos
Malware Config
C2 Extraction:
91.193.75.185:1989
Unpacked files
SH256 hash:
57bd022be1832b84d58f81f0230e5fb0a949023fc35b8e42ba548c60ded8be92
MD5 hash:
1f104346e2abd8b941cf6d97a285a218
SHA1 hash:
7e19d007405d841600dc26ba4cc1eaf65cd05071
Link:
https://www.unpac.me/results/181f01e5-e79b-4b15-8597-8818c37204f0/
SH256 hash:
00ca0e844ce49c89f24904c0784bf610bc5475cf97565300a36daedb2e180710
MD5 hash:
9ca1f41b430b7d77c92440465b60a16c
SHA1 hash:
020470878feb0f1b75530d40f673b835ee840c6a
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/181f01e5-e79b-4b15-8597-8818c37204f0/
SH256 hash:
5705f860865c9fd9eb6a5609d3ea183b201e72fa45db0b06be00a4a6f665f82a
MD5 hash:
104064d4c0b681c9a7ae1f0c00fbff49
SHA1 hash:
af273bc182f0c492520811da54165534dcf89967
Link:
https://www.unpac.me/results/181f01e5-e79b-4b15-8597-8818c37204f0/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5705f860865c9fd9eb6a5609d3ea183b201e72fa45db0b06be00a4a6f665f82a

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
Rule name:win_remcos_g0
Create hunting rule
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/113771/

Comments