MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 308245e3b036eaa8e2b12c92852a64e5feedd6d952789d12da2ea5da9b7acced. 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: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 308245e3b036eaa8e2b12c92852a64e5feedd6d952789d12da2ea5da9b7acced
SHA3-384 hash: 8b9fa792d781429a406cc98b3f128142b05485c451c5d89af39c4fe7a41f3ccbea15872a229f93dcd3ff3be556c82300
SHA1 hash: a13820d1bbf0812a91b28ef2a89302b85c8f1746
MD5 hash: f3b661b1733230cea69912446834bf5c
humanhash: spaghetti-seventeen-river-football
File name:Cobro Juridico_06485531558_5482751_872411945215484_089731_28992931479395636_108255_29509332731_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:304'720 bytes
First seen:2020-10-20 08:50:26 UTC
Last seen:2020-10-26 16:20:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 01b3e9cd5f8da7f678afbf4953eabadd (1 x RemcosRAT)
ssdeep 6144:aHxL2clxGRhqtdDFiuieJf1++JP9UILJOzzYkdsJrVB:ORGRhWdUuieJfJP+I4fmrVB
Threatray 906 similar samples on MalwareBazaar
TLSH 16549E5CB9C0F822FA654878BEA4D2ED9828BF30145898437EC43F276DE06D49E16F57
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: EUR05-AM6-obe.outbound.protection.outlook.com
Sending IP: 40.92.91.56
From: lenka buckova <lenkabuckova@hotmail.com>
Subject: ACUERDO DE PAGO
Attachment: Cobro Juridico_06485531558_5482751_872411945215484_089731_28992931479395636_108255_29509332731.tgz (contains "Cobro Juridico_06485531558_5482751_872411945215484_089731_28992931479395636_108255_29509332731_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services:7580 (186.169.63.66)

Intelligence

File Origin
# of uploads :
2
# of downloads :
86
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73423/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
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
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/497417
Signature
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
PE file has a writeable .text section
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 300915 Sample: 2731_pdf.exe Startdate: 20/10/2020 Architecture: WINDOWS Score: 100 47 databasepropersonombrecomercialideasearchwords.services 2->47 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for submitted file 2->53 55 Detected Remcos RAT 2->55 57 4 other signatures 2->57 11 2731_pdf.exe 1 2->11         started        14 PxoServicesNet.exe.exe 1 2->14         started        16 PxoServicesNet.exe.exe 1 2->16         started        signatures3 process4 signatures5 67 Detected unpacking (changes PE section rights) 11->67 69 Detected unpacking (overwrites its own PE header) 11->69 71 Contains functionality to steal Chrome passwords or cookies 11->71 75 3 other signatures 11->75 18 2731_pdf.exe 4 5 11->18         started        21 conhost.exe 11->21         started        73 Maps a DLL or memory area into another process 14->73 23 PxoServicesNet.exe.exe 14->23         started        25 conhost.exe 14->25         started        27 PxoServicesNet.exe.exe 16->27         started        29 conhost.exe 16->29         started        process6 file7 43 C:\Users\user\...\PxoServicesNet.exe.exe, PE32 18->43 dropped 45 C:\...\PxoServicesNet.exe.exe:Zone.Identifier, ASCII 18->45 dropped 31 wscript.exe 1 18->31         started        process8 process9 33 cmd.exe 1 31->33         started        process10 35 PxoServicesNet.exe.exe 1 33->35         started        38 conhost.exe 33->38         started        signatures11 59 Detected unpacking (changes PE section rights) 35->59 61 Detected unpacking (overwrites its own PE header) 35->61 63 Contains functionality to steal Chrome passwords or cookies 35->63 65 4 other signatures 35->65 40 PxoServicesNet.exe.exe 2 3 35->40         started        process12 dnsIp13 49 databasepropersonombrecomercialideasearchwords.services 186.169.34.130, 49781, 49782, 49790 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 40->49
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/308245e3b036eaa8e2b12c92852a64e5feedd6d952789d12da2ea5da9b7acced/
Threat name:
Win32.Backdoor.Rescoms
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 02:16:20 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gcbely5qg3vkryvrfsjikkte4x7o3vwzkj4j2ew2f2s5vg32ztwq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
01de61b8b14bb1231ac14968c89b304afa74376e70ce29c7da92259a8a702b60
RemcosRAT
485c1301f4bc84bc2d274f53222cf7ca5fbd8af8728d1aaa977a6574f577fb87
RemcosRAT
48a1d2d19d917dfd3d1e94cb26198d7841f9263e36c64fa5f4153a9f776de355
RemcosRAT
4ea16682c6d48eb737c1857beceadc3d3077921c03fa62d9dad44d551d92729d
RemcosRAT
54c937e5b6fe28e7076e549802765e15ad6191d2ddc427b532ff9347fef2eb39
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
6274c01dd6783517a68267d2c6c2af38143ed35074cfc2372d8bc385a7c5f4e9
RemcosRAT
83eb442b175e4fe5a2fde6e8d72618eee280398f89a81da1f9c118d2c46032d4
RemcosRAT
c0b1ba178d886a9d71fb7ffd5b169bf023021e13c545e3cd8d15461221dd2006
RemcosRAT
eb1230ab4a5408a3d264bb51f1ff311fcf52aa97d52b801738cd5add365e77d2
RemcosRAT
+ 896 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
persistence rat family:remcos
Link:
https://tria.ge/reports/201020-rd72642zla/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:7580
Unpacked files
SH256 hash:
308245e3b036eaa8e2b12c92852a64e5feedd6d952789d12da2ea5da9b7acced
MD5 hash:
f3b661b1733230cea69912446834bf5c
SHA1 hash:
a13820d1bbf0812a91b28ef2a89302b85c8f1746
Link:
https://www.unpac.me/results/49b722e2-785d-4e1e-8057-532c32638aff/
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/308245e3b036eaa8e2b12c92852a64e5feedd6d952789d12da2ea5da9b7acced

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: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: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 05af0a95c0f61e75d7f2bbd1d64a1a404890b7bf98238cf12ea098f7e2b37935

RemcosRAT

Executable exe 308245e3b036eaa8e2b12c92852a64e5feedd6d952789d12da2ea5da9b7acced

(this sample)

  
Dropped by
MD5 414dc68697fa760596e770f9e167b8a7
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 05af0a95c0f61e75d7f2bbd1d64a1a404890b7bf98238cf12ea098f7e2b37935
Cape
Cape
https://www.capesandbox.com/analysis/73423/

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