MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7
SHA3-384 hash: 5d66cbb41070b516b465c9aceba7de28939a18a577f709338b74c101bbaba44434cf526e10a2e494387f3d6c0a2325ef
SHA1 hash: ce4a118e2f7891fab1f6c95d4722ecc9ca40c380
MD5 hash: 9c19270cbcba316bbd0d9ef19e5f5c6e
humanhash: kitten-harry-bacon-ten
File name:SERFINANZA_EXTRACTO_95192423350910894693342209_93269840066410939239405_3589722817207249426968099_5581546246170907324764_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'940'168 bytes
First seen:2020-11-20 07:41:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:N+QrNhjqy9wcVj2sGpl1kbEitOgM4GcuaHx9:bzqIwcsvhitOTS
Threatray 1'146 similar samples on MalwareBazaar
TLSH E7957C10F844345F7A9B44F05ED7A6E8A2D63119197127398C6368BCDB1E14BBCEF8B2
Reporter abuse_ch
Tags:ESP exe geo RAT RemcosRAT

Code Signing Certificate

Organisation:Fbbccfddacdaf
Issuer:Fbbccfddacdaf
Algorithm:sha256WithRSAEncryption
Valid from:Nov 19 20:26:41 2020 GMT
Valid to:Nov 19 20:26:41 2021 GMT
Serial number: F057E2BA21D3F7D3003D8E7E79A59561
Thumbprint Algorithm:SHA256
Thumbprint: 52F3CB9891440A281FB5C73B74F92DCD1E5AD413A660F37E246366331DA755DF
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM12-DM6-obe.outbound.protection.outlook.com
Sending IP: 40.92.22.23
From: info. Extracto <tesoreria022procolombia@outlook.es>
Subject: EXTRACTO SERFINANZA.
Attachment: SERFINANZA_EXTRACTO_95192423350910894693342209_93269840066410939239405_3589722817207249426968099_558 (contains "SERFINANZA_EXTRACTO_95192423350910894693342209_93269840066410939239405_3589722817207249426968099_5581546246170907324764_pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
Deleting a recently created file
Running batch commands
DNS request
Launching the default Windows debugger (dwwin.exe)
Connection attempt
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
Setting a global event handler for the keyboard
Result
Verdict:
UNKNOWN
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/543786
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
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 320991 Sample: 4764_pdf.exe Startdate: 20/11/2020 Architecture: WINDOWS Score: 100 53 databasepropersonombrecomercialideasearchwords.services 2->53 59 Multi AV Scanner detection for domain / URL 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 6 other signatures 2->65 11 4764_pdf.exe 2 2->11         started        14 PxxoServicesNet.exe 2 2->14         started        16 PxxoServicesNet.exe 2 2->16         started        signatures3 process4 signatures5 75 Contains functionality to steal Chrome passwords or cookies 11->75 77 Contains functionality to capture and log keystrokes 11->77 79 Contains functionality to inject code into remote processes 11->79 81 Contains functionality to steal Firefox passwords or cookies 11->81 18 4764_pdf.exe 4 5 11->18         started        21 WerFault.exe 23 9 11->21         started        83 Hides threads from debuggers 14->83 85 Injects a PE file into a foreign processes 14->85 23 PxxoServicesNet.exe 14->23         started        25 PxxoServicesNet.exe 14->25         started        27 WerFault.exe 14->27         started        29 PxxoServicesNet.exe 16->29         started        31 WerFault.exe 16->31         started        process6 file7 47 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 18->47 dropped 49 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 18->49 dropped 33 wscript.exe 1 18->33         started        51 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->51 dropped process8 process9 35 cmd.exe 1 33->35         started        process10 37 PxxoServicesNet.exe 2 35->37         started        40 conhost.exe 35->40         started        signatures11 67 Multi AV Scanner detection for dropped file 37->67 69 Machine Learning detection for dropped file 37->69 71 Contains functionality to steal Chrome passwords or cookies 37->71 73 4 other signatures 37->73 42 PxxoServicesNet.exe 37->42         started        45 WerFault.exe 37->45         started        process12 dnsIp13 55 databasepropersonombrecomercialideasearchwords.services 186.169.53.6, 7580 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 42->55 57 192.168.2.1 unknown unknown 42->57
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 23:45:55 UTC
File Type:
PE (.Net Exe)
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=27rttjnaf3bzn62wrpuuquchzlgpnte2zbniuzciiehne2tv67tq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde
RemcosRAT
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
1b9cbd60298e5be7b6c5813a3c03bd423ae73364049848c44145b9c079fd0adc
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d
RemcosRAT
b29880b2403337ef4fb3c644c4b033327cb6e2828d28799a0cc6a708cc0afaa4
RemcosRAT
ca62c5cf8e6f3260dbe15a469e90197612af8843d897f65c7fdde87554ebae51
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
+ 1'136 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201120-q3d9tgarmj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
ServiceHost packer
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:7580
Unpacked files
SH256 hash:
d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7
MD5 hash:
9c19270cbcba316bbd0d9ef19e5f5c6e
SHA1 hash:
ce4a118e2f7891fab1f6c95d4722ecc9ca40c380
Link:
https://www.unpac.me/results/4b69928e-a771-4cad-948e-ed5d24fd453b/
SH256 hash:
869f6fe1abd39d76baba382f786ea60cd5e89ace9c4430f43b568cb380f4767d
MD5 hash:
e90befadc22b588e976d5148075dee3d
SHA1 hash:
38fa0bbe55e953212299470a58623fa02a6324b0
Link:
https://www.unpac.me/results/4b69928e-a771-4cad-948e-ed5d24fd453b/
SH256 hash:
f61874e8c00508db2add146013561363029bf4445f06e77b74462f2f1c733ff1
MD5 hash:
280799c15f25152b59291cf54ed42b50
SHA1 hash:
c6bb9df903e43f83654c0f2d76f771b8f7d87825
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/4b69928e-a771-4cad-948e-ed5d24fd453b/
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

rar 0cf96fb8b809ba4702cc45b012f0a26431304ff9900977b20e42d2cc8cf3dac2

RemcosRAT

Executable exe d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7

(this sample)

  
Dropped by
MD5 c06f7f0d39d508728cbba737bb6c185c
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 0cf96fb8b809ba4702cc45b012f0a26431304ff9900977b20e42d2cc8cf3dac2

Comments