MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5623d23f830311afc91586eeae9824ede5dd4233d9b45a45a6bea4110514db48. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5623d23f830311afc91586eeae9824ede5dd4233d9b45a45a6bea4110514db48
SHA3-384 hash: ca7b3203d95fc93b4d65ca1927b4ce32d7e54b6085b95f8fa5de33b9fe97fe21bab0ca1ece9b7b94faccccaf00456d7c
SHA1 hash: 0b4dd0b7d5e0c726d5962e04086bbbed5e9d18e9
MD5 hash: 303929d2df4adc9613364c3562b29997
humanhash: oranges-football-eight-dakota
File name:Extracto_Adjunto_9385054641140025242788136316_2668596035833973129463161_5970332112619846899783104787_0507678132265074132_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:347'648 bytes
First seen:2020-08-05 08:52:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:TLyHnpdTCkl1ZhhWch7rPFf80YCn3J1vgCpGTIlaTKwj:UpdJ1ZHN7K0j3E78C
Threatray 791 similar samples on MalwareBazaar
TLSH 157427037E88EB21C4595E37D3EF196057F1A1C30A33D60B6E8DAB9624852536D6B32E
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM04-BN3-obe.outbound.protection.outlook.com
Sending IP: 40.92.9.22
From: info. Extracto <tesoreria49procolombia@outlook.es>
Subject: EXTRACTO SERFINANZA.
Attachment: Extracto_Adjunto_9385054641140025242788136316_2668596035833973129463161_5970332112619846899783104787 (contains "Extracto_Adjunto_9385054641140025242788136316_2668596035833973129463161_5970332112619846899783104787_0507678132265074132_pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
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:
92 / 100
Link:
https://www.joesandbox.com/analysis/410697
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
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 257619 Sample: 4132_pdf.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 92 45 recuperaciondecartera.website 2->45 55 Malicious sample detected (through community Yara rule) 2->55 57 Detected Remcos RAT 2->57 59 Yara detected Remcos RAT 2->59 61 2 other signatures 2->61 11 4132_pdf.exe 2 2->11         started        14 PXServiceNet.exe 2 2->14         started        16 PXServiceNet.exe 2 2->16         started        signatures3 process4 signatures5 63 Contains functionality to steal Chrome passwords or cookies 11->63 65 Contains functionality to capture and log keystrokes 11->65 67 Contains functionality to inject code into remote processes 11->67 69 Contains functionality to steal Firefox passwords or cookies 11->69 18 4132_pdf.exe 4 5 11->18         started        21 4132_pdf.exe 11->21         started        23 4132_pdf.exe 11->23         started        25 PXServiceNet.exe 14->25         started        27 PXServiceNet.exe 16->27         started        process6 file7 41 C:\Users\user\AppData\...\PXServiceNet.exe, PE32 18->41 dropped 43 C:\Users\...\PXServiceNet.exe:Zone.Identifier, ASCII 18->43 dropped 29 wscript.exe 1 18->29         started        process8 process9 31 cmd.exe 1 29->31         started        process10 33 PXServiceNet.exe 2 31->33         started        36 conhost.exe 31->36         started        signatures11 49 Contains functionality to steal Chrome passwords or cookies 33->49 51 Contains functionality to capture and log keystrokes 33->51 53 Contains functionality to steal Firefox passwords or cookies 33->53 38 PXServiceNet.exe 2 4 33->38         started        process12 dnsIp13 47 recuperaciondecartera.website 186.169.76.50, 49725, 49728, 49729 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 38->47
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5623d23f830311afc91586eeae9824ede5dd4233d9b45a45a6bea4110514db48/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 02:27:57 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kyr5ep4dami27sivq3xk5gbe5xs52qrt3g2furngx2sbcbiu3nea._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
13eaaf168207a5014c105532b6a23805fc6db28f73908914a4583979173cc254
RemcosRAT
2f07a5d8c1e6ac465e5d306b0fb8335aa41f3204b9bf9793337a849a93921a9a
RemcosRAT
314d26bc5fe146f5040c40b8c5b889e6e90cb0b22ec694564c1182d49c3bf950
RemcosRAT
397545efcbf53bebabdb003bbe9f8b619b7ffdd5383c21ecd9e99c6de3e3cd83
RemcosRAT
3bdfaf82d5d56f2546be44b3355f8d72cc0508984586e0fba3d704a5adabf7d1
RemcosRAT
417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd
RemcosRAT
64ba0f4265f9ed3f3f9315ee0256b360827074d5f898a7eb07ed98dd5f7fec7e
RemcosRAT
b3ae13e392ebe3eec95949395786577344472af7588ed1db4577c597a417e8a4
RemcosRAT
c8c1e04edd5c422d065e27a3a73931d373de200419cd9ba649fdfadee686e5f2
RemcosRAT
d69aa1932b2e702e5065ee19da9fc9cf2b05e7dbaa617141b14eaa501a14955e
RemcosRAT
+ 781 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
persistence rat family:remcos
Link:
https://tria.ge/reports/200805-82c9c2jej6/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
recuperaciondecartera.website:6790
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/5623d23f830311afc91586eeae9824ede5dd4233d9b45a45a6bea4110514db48

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: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

rar 2795711e3e2067045884aaf4a8c12a7d8f35b1f454a480bcef423b0d289ea3dd

RemcosRAT

Executable exe 5623d23f830311afc91586eeae9824ede5dd4233d9b45a45a6bea4110514db48

(this sample)

  
Dropped by
MD5 32deab5371ad3f4f28de4348cffae24b
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39272/
  
Dropped by
SHA256 2795711e3e2067045884aaf4a8c12a7d8f35b1f454a480bcef423b0d289ea3dd

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