MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464. 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: 13


Intelligence 13 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464
SHA3-384 hash: 467b3267554fcc391d9d3a505f1b8bca02aa51d3b3e438cb84ffbe0fbfe692a15fba10a63e55f1dcaaed8f7210b8fc6e
SHA1 hash: 6cfc5429357275f577906087cde589737690c3e4
MD5 hash: 60e2497bcf067311af8112234b669d4b
humanhash: east-single-alaska-harry
File name:a55ddff55740467df8dee39a5bbaee32.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:324'608 bytes
First seen:2021-03-06 06:04:49 UTC
Last seen:2021-03-06 07:57:55 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 6144:zH/CbI76O5hSY8Rp10LaUpWS881yXI4A1eUPxDGZ7A:D/WRp10LaGWp8qADPM
Threatray 1'626 similar samples on MalwareBazaar
TLSH 3464CF41A7548195EFEC1BF9252AD0C45324A19A1C9FE3580E42E4ED28FFB6E74D38E3
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: vvps.cliveit.com
Sending IP: 194.31.96.114
From: Ms. Odesa Buenconsejo <odesa@riverindustrade.com>
Reply-To: Ms. Odesa Buenconsejo <marketing.jnautomation.in@gmail.com>
Subject: March Shipment
Attachment: a55ddff55740467df8dee39a5bbaee32.tar (contains "a55ddff55740467df8dee39a5bbaee32.exe")

RemcosRAT C2:
lovedaysde.duckdns.org

Intelligence

File Origin
# of uploads :
2
# of downloads :
174
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a55ddff55740467df8dee39a5bbaee32.exe
Verdict:
Malicious activity
Analysis date:
2021-03-06 06:06:21 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/58c156d0-876f-49d3-abeb-0130a3491df9

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/122577/
Detection(s):
SecuriteInfo.com.Artemis60E2497BCF06.10453.22327.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Running batch commands
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
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Verdict:
MALICIOUS
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/630408
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
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
Detected unpacking (creates a PE file in dynamic memory)
Found malware configuration
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)
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 364177 Sample: a55ddff55740467df8dee39a5bb... Startdate: 06/03/2021 Architecture: WINDOWS Score: 100 72 Found malware configuration 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 Detected Remcos RAT 2->76 78 6 other signatures 2->78 13 a55ddff55740467df8dee39a5bbaee32.exe 3 2->13         started        17 remcos.exe 2 2->17         started        19 remcos.exe 2->19         started        process3 file4 58 a55ddff55740467df8dee39a5bbaee32.exe.log, ASCII 13->58 dropped 92 Contains functionality to steal Chrome passwords or cookies 13->92 94 Contains functionality to capture and log keystrokes 13->94 96 Contains functionality to inject code into remote processes 13->96 98 2 other signatures 13->98 21 a55ddff55740467df8dee39a5bbaee32.exe 4 5 13->21         started        24 a55ddff55740467df8dee39a5bbaee32.exe 13->24         started        26 remcos.exe 17->26         started        28 remcos.exe 19->28         started        signatures5 process6 file7 54 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 21->54 dropped 56 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 21->56 dropped 30 wscript.exe 1 21->30         started        process8 process9 32 cmd.exe 1 30->32         started        process10 34 remcos.exe 3 32->34         started        37 conhost.exe 32->37         started        signatures11 80 Detected unpacking (creates a PE file in dynamic memory) 34->80 82 Machine Learning detection for dropped file 34->82 84 Injects a PE file into a foreign processes 34->84 39 remcos.exe 4 3 34->39         started        43 remcos.exe 34->43         started        process12 dnsIp13 70 lovedaysde.duckdns.org 45.133.1.234, 3999, 49747, 49748 DEDIPATH-LLCUS Netherlands 39->70 86 Writes to foreign memory regions 39->86 88 Allocates memory in foreign processes 39->88 90 Injects a PE file into a foreign processes 39->90 45 svchost.exe 2 12 39->45         started        signatures14 process15 process16 47 iexplore.exe 45->47         started        process17 49 iexplore.exe 47->49         started        52 iexplore.exe 47->52         started        dnsIp18 60 github.com 140.82.121.4, 443, 49756, 49757 GITHUBUS United States 49->60 62 avatars.githubusercontent.com 185.199.109.133, 443, 49760, 49761 FASTLYUS Netherlands 49->62 64 consentdeliveryfd.azurefd.net 49->64 66 140.82.121.3, 443, 49774, 49775 GITHUBUS United States 52->66 68 185.199.110.133, 443, 49778, 49779 FASTLYUS Netherlands 52->68
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464/
Threat name:
ByteCode-MSIL.Trojan.Pwsx
Create hunting rule
Status:
Malicious
First seen:
2021-03-06 06:05:10 UTC
AV detection:
8 of 45 (17.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rpnfw76aot2a3c672kmiq6jtdjyrilne36hq5mks6ansmauhersa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
8737cdfdcf2aa430ccfa6b2c1834a3c0768c201f4a77e3e5315e2bdbc3134a68
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'616 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210306-pz8s4hpdzj/
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:
lovedaysde.duckdns.org:3999
Unpacked files
SH256 hash:
b4a7031286ecbc69d7b4c847c08e2392f2b5438c4b94b5a66d34a3df34bfb50b
MD5 hash:
635684324a25a45fdceb92b34da040b0
SHA1 hash:
4d99c28759c613599c7fe2e3667d132de43408b5
Link:
https://www.unpac.me/results/efba3781-f5ac-475c-be0c-71dbe7f5c9a8/
SH256 hash:
855d68e98eb747cdca0fe844d52f874b6c021241b404ce48ea18de50d6492e73
MD5 hash:
488a6c8e08cf719ad060814f5ac47318
SHA1 hash:
34772b98d98a3044418e14f55e6c20fd62daab38
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/efba3781-f5ac-475c-be0c-71dbe7f5c9a8/
Parent samples :
f81f70a17b0907dd726dc4f57126602ed97a746e8ec311a942767b33083dcb40
8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464
SH256 hash:
f8b5b51efedb3e87493ac2439473564603cc3059d57956f209a7310e311a1027
MD5 hash:
d66f89bf838fb52ed59d311a99aea214
SHA1 hash:
342525c4aabbb92abf51459081d34ed0f1cdc965
Link:
https://www.unpac.me/results/efba3781-f5ac-475c-be0c-71dbe7f5c9a8/
SH256 hash:
8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464
MD5 hash:
60e2497bcf067311af8112234b669d4b
SHA1 hash:
6cfc5429357275f577906087cde589737690c3e4
Link:
https://www.unpac.me/results/efba3781-f5ac-475c-be0c-71dbe7f5c9a8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464

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:unixredflags2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
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

tar a6ac5c2b1cbc29c7209fc3cd3687c07845d55ddd04ffb64f6456908d32c958c3

RemcosRAT

Executable exe 8bda5b7fc074f40d8bdfd2988879331a71142da4df8f0eb152f01b2602872464

(this sample)

  
Dropped by
MD5 8adec6b3d1b0a99a6e57a169a00dc7fc
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/122577/
  
Dropped by
SHA256 a6ac5c2b1cbc29c7209fc3cd3687c07845d55ddd04ffb64f6456908d32c958c3

Comments