MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc7336231300fc46c3be07afe1cb721f1b1a98f0a4a13029d9bfcabea5619259. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dc7336231300fc46c3be07afe1cb721f1b1a98f0a4a13029d9bfcabea5619259
SHA3-384 hash: 8df08ec88b5a2bd91f04c1b2885d9cc6fbaf23dde593fc897b6c37d2f976f7a624a266a5bc055ee55f7d1f2b603d1b57
SHA1 hash: b4456bb4d190721a6b19b34c3c1a75c71c0c97a5
MD5 hash: d89ed76e839eecf303b3fa3a936e32e1
humanhash: beer-montana-lake-butter
File name:14082020 PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:327'265 bytes
First seen:2020-08-14 18:19:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 24f4223e271413c25abad52fd456a9bc (21 x GuLoader, 15 x Loki, 10 x AgentTesla)
ssdeep 6144:cHfYbUjya0OjLeTO/SD3AScYVjMl5Wf2Lkor6aXnNG1RyBNm+:c5jyabOO/2AScmjArOEkR2
TLSH 68641261B6A1D863C88002745536AFD75BF6CC2215487F9707843F8F3ABAA94CE1E393
Reporter abuse_ch
Tags:exe Outlook RemcosRAT


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: NAM11-CO1-obe.outbound.protection.outlook.com
Sending IP: 40.92.18.50
From: ELECTROKIT . <electrokit123@hotmail.com>
Subject: DOCUMENTO PDF
Attachment: 14082020 PDF.UU (contains "14082020 PDF.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/46107/
Detection(s):
PUA.Win.Adware.Browserio-6725861-0
Create hunting rule

SecuriteInfo.com.BehavesLike.Win32.ObfusRansom.bc.6542.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Launching cmd.exe command interpreter
Deleting a recently created file
Transferring files using the Background Intelligent Transfer Service (BITS)
Enabling the 'hidden' option for recently created files
Moving a file to the %AppData% subdirectory
DNS request
Sending a custom TCP request
Creating a file in the %temp% directory
Creating a file
Creating a file in the %AppData% subdirectories
Sending a UDP request
Unauthorized injection to a system process
Setting a global event handler for the keyboard
Enabling autorun by creating a file
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/430652
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
Hijacks the control flow in another process
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 267711 Sample: 14082020 PDF.exe Startdate: 16/08/2020 Architecture: WINDOWS Score: 100 29 Malicious sample detected (through community Yara rule) 2->29 31 Detected Remcos RAT 2->31 33 Yara detected Remcos RAT 2->33 35 3 other signatures 2->35 7 14082020 PDF.exe 61 2->7         started        process3 file4 19 C:\Users\user\...\WizardFrameworkVS.dll, PE32 7->19 dropped 21 C:\Users\user\AppData\Roaming\...\pdmui.dll, PE32 7->21 dropped 23 C:\Users\user\AppData\...\crtowordscht.dll, PE32 7->23 dropped 25 10 other files (none is malicious) 7->25 dropped 10 rundll32.exe 7->10         started        process5 signatures6 37 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 10->37 39 Hijacks the control flow in another process 10->39 41 Maps a DLL or memory area into another process 10->41 13 cmd.exe 10->13         started        16 cmd.exe 2 5 10->16         started        process7 dnsIp8 43 Contains functionality to steal Chrome passwords or cookies 13->43 45 Contains functionality to capture and log keystrokes 13->45 47 Contains functionality to inject code into remote processes 13->47 49 Contains functionality to steal Firefox passwords or cookies 13->49 27 marianavilla3008n.duckdns.org 181.140.213.213, 2047 EPMTelecomunicacionesSAESPCO Colombia 16->27 51 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 16->51 signatures9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dc7336231300fc46c3be07afe1cb721f1b1a98f0a4a13029d9bfcabea5619259/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-08-14 18:21:08 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3rztmiytad6enq56a6x6ds3sd4nrvghqusqtakozx7fl5jlbsjmq._file
Verdict:
suspicious
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
rat family:remcos
Link:
https://tria.ge/reports/200814-y2gbsqy43j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Loads dropped DLL
Blacklisted process makes network request
Remcos
Malware Config
C2 Extraction:
marianavilla3008n.duckdns.org:2047
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
DriveBy Activity
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/dc7336231300fc46c3be07afe1cb721f1b1a98f0a4a13029d9bfcabea5619259

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
Rule name:win_remcos_g0
Create hunting rule
Author:Daniel Plohmann <daniel.plohmann<at>fkie.fraunhofer.de>

File information

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

Malspam

RemcosRAT

rar 1d49444035e343cd69c404f6382c1b5b88df077559444b324ea40bdaf8efb280

RemcosRAT

Executable exe dc7336231300fc46c3be07afe1cb721f1b1a98f0a4a13029d9bfcabea5619259

(this sample)

  
Dropped by
MD5 f379fd4d026d156e4d73af7f99984e0a
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 1d49444035e343cd69c404f6382c1b5b88df077559444b324ea40bdaf8efb280
Cape
Cape
https://www.capesandbox.com/analysis/46107/

Comments