MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 58d5f679e704a0814342eb3a02eaf780d737c6456e5ae070986330db2fa6dd18. 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: 58d5f679e704a0814342eb3a02eaf780d737c6456e5ae070986330db2fa6dd18
SHA3-384 hash: 14655119d6c2d1283be52525768d18eadb13414510fd9f550dc59e7277642b7f1d14d8b653cb1a609dc9734bcdbd4d96
SHA1 hash: 54ade4745ddb893bfb91a7979a70839bfda13c53
MD5 hash: 18e3fea0d66181dede5cefb6bcd9b6cb
humanhash: saturn-freddie-sink-helium
File name:Cobro Juridico_05753020224_69176802_55490852084492_175417831_643403628287283693_1555820430_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'947'776 bytes
First seen:2020-11-20 07:53:11 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:ZjkELsiXdCTLQG/kCRKLrPL0YL2S0PNexVf8wWLCcVv4oa0:LkGwc2S0kV9WLnVv4C
Threatray 1'152 similar samples on MalwareBazaar
TLSH C0957C14F880785F3ADA40F05ED7A6E8E2D63519163127394C6369BCD60E19B7CEF8B2
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT

Code Signing Certificate

Organisation:Bcadcedcbdabdcfaabfcfb
Issuer:Bcadcedcbdabdcfaabfcfb
Algorithm:sha256WithRSAEncryption
Valid from:Nov 19 20:30:33 2020 GMT
Valid to:Nov 19 20:30:33 2021 GMT
Serial number: 78866986E0B0455EB2DA4C83CC47108E
Thumbprint Algorithm:SHA256
Thumbprint: 95AE99C49A6002F78E7034C69EF44AFADE102B66EBBD4C211147A375FD2E94C1
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM02-SN1-obe.outbound.protection.outlook.com
Sending IP: 40.92.5.39
From: patricia garcia montoya <patriciagarciaconta@hotmail.com>
Subject: COBRO JURIDICO SERFINANZA.
Attachment: Cobro Juridico_05753020224_69176802_55490852084492_175417831_643403628287283693_1555820430.tgz (contains "Cobro Juridico_05753020224_69176802_55490852084492_175417831_643403628287283693_1555820430_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services:7580 (186.169.53.6)

Intelligence

File Origin
# of uploads :
1
# of downloads :
141
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 process from a recently created file
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
Creating a window
Deleting a recently created file
Running batch commands
Creating a file
DNS request
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
Gathering data
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/543923
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
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: 321057 Sample: Cobro Juridico_05753020224_... Startdate: 20/11/2020 Architecture: WINDOWS Score: 100 47 g.msn.com 2->47 59 Malicious sample detected (through community Yara rule) 2->59 61 Detected Remcos RAT 2->61 63 Yara detected Remcos RAT 2->63 65 7 other signatures 2->65 11 Cobro Juridico_05753020224_69176802_55490852084492_175417831_643403628287283693_1555820430_pdf.exe 2 2->11         started        14 PxxoServicesNet.exe 2 2->14         started        16 PxxoServicesNet.exe 2 2->16         started        signatures3 process4 signatures5 67 Hides threads from debuggers 11->67 69 Injects a PE file into a foreign processes 11->69 18 Cobro Juridico_05753020224_69176802_55490852084492_175417831_643403628287283693_1555820430_pdf.exe 4 5 11->18         started        21 WerFault.exe 23 9 11->21         started        23 PxxoServicesNet.exe 14->23         started        25 WerFault.exe 14->25         started        27 PxxoServicesNet.exe 16->27         started        process6 file7 43 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 18->43 dropped 45 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 18->45 dropped 29 wscript.exe 1 18->29         started        process8 process9 31 cmd.exe 1 29->31         started        process10 33 PxxoServicesNet.exe 2 31->33         started        36 conhost.exe 31->36         started        signatures11 51 Contains functionality to steal Chrome passwords or cookies 33->51 53 Contains functionality to capture and log keystrokes 33->53 55 Contains functionality to steal Firefox passwords or cookies 33->55 57 2 other signatures 33->57 38 PxxoServicesNet.exe 33->38         started        41 WerFault.exe 33->41         started        process12 dnsIp13 49 databasepropersonombrecomercialideasearchwords.services 186.169.53.6, 7580 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 38->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/58d5f679e704a0814342eb3a02eaf780d737c6456e5ae070986330db2fa6dd18/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-20 07:54:11 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=ldk7m6phasqicq2c5m5af2xxqdltprsfnznoa4eymmynwl5g3uma._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde
RemcosRAT
1c517ddebb6f5893d52918c51a70e56f68b50dd65e0460a673cce3625a0f8a2b
RemcosRAT
2123aaf55e2f25a5162c742f31d52ef92dab582db297a8a3f246741ab0cccf74
RemcosRAT
3ad976b10711565d40a43e17baa86f178a22066c982363d711db1f7edbff3ff2
RemcosRAT
4096056536154e1fa5a10e3495cd3ddadf7c01022b7b65b0c35a67b2eac2bc6b
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
6c489ebc2d7b407a9058479ee3e54b83949ef2a58ce749528cea74b4f0b5db0e
RemcosRAT
a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7
RemcosRAT
+ 1'142 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-zk3sbcsh4s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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:
58d5f679e704a0814342eb3a02eaf780d737c6456e5ae070986330db2fa6dd18
MD5 hash:
18e3fea0d66181dede5cefb6bcd9b6cb
SHA1 hash:
54ade4745ddb893bfb91a7979a70839bfda13c53
Link:
https://www.unpac.me/results/c45b343e-375d-45b0-a115-335c6e55b1b4/
SH256 hash:
9e2d3b1d019e7d62d91dd477ee77421a6448054f0028c8401fd999d5407386ae
MD5 hash:
d2749e0e0f6191040071f64e8dd45b54
SHA1 hash:
b4645a1cc976b0abc5472d4b706692273715d8e8
Link:
https://www.unpac.me/results/c45b343e-375d-45b0-a115-335c6e55b1b4/
SH256 hash:
5b79dae699352ad251219d327f8d17253dce83054df95161459cbeee892c2f5d
MD5 hash:
bda913940b27d370dc5635cafb08660a
SHA1 hash:
2dc13794df6e02d6a9e8ebf5f8f652466cdae222
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/c45b343e-375d-45b0-a115-335c6e55b1b4/
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 08c2a762cd4e60e50671061f4fc4789c5d54bf530402c857f335cc8801134277

RemcosRAT

Executable exe 58d5f679e704a0814342eb3a02eaf780d737c6456e5ae070986330db2fa6dd18

(this sample)

  
Dropped by
MD5 0d28d34c98be7a043f48ee115546dfb6
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 08c2a762cd4e60e50671061f4fc4789c5d54bf530402c857f335cc8801134277

Comments