MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ceff53de4e1a493db5485f8281c011a98df2c5baa4ac0f8b18757f97501bd48a. 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: 12


Intelligence 12 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ceff53de4e1a493db5485f8281c011a98df2c5baa4ac0f8b18757f97501bd48a
SHA3-384 hash: 76d0dd59521a7c426ad9b6ff6d8d7454f676df487060bef38021703e0c213d3d36f6019e6b9eb92fc81ace7c67e6e3e1
SHA1 hash: 24448bacf3d60298271a4ba5b8d1a0691077a94e
MD5 hash: 140dad8ce059a70557bac14f9a3c27ec
humanhash: nineteen-tango-mirror-mockingbird
File name:SecuriteInfo.com.FileRepMalware.32701
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'366'528 bytes
First seen:2021-01-21 10:15:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:OtFbCf/qhPMvb/f49LV+62CZIbxLCZW8BRswJ:O
Threatray 1'448 similar samples on MalwareBazaar
TLSH 1F55C3493C7706ACB1B2F1F494B4959C302EDBFC81AB05986227D4DB9753A8A6ED7C30
Reporter SecuriteInfoCom
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
147
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
EASTEND.doc
Verdict:
Malicious activity
Analysis date:
2021-01-21 06:26:00 UTC
Tags:
opendir exploit CVE-2017-11882 loader rat remcos keylogger
Link:
https://app.any.run/tasks/3a16149d-186b-46a9-9ba8-9a73dfac3ed3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/113253/
Detection(s):
SecuriteInfo.com.FileRepMalware.32701.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a UDP request
Adding an access-denied ACE
Creating a file
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Deleting a recently created file
DNS request
Sending a custom TCP request
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/587112
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 342576 Sample: SecuriteInfo.com.FileRepMal... Startdate: 21/01/2021 Architecture: WINDOWS Score: 100 79 gsyagvxnzmkoplbhduisbagtevcnxmzlopljdgye.ydns.eu 2->79 81 Malicious sample detected (through community Yara rule) 2->81 83 Multi AV Scanner detection for submitted file 2->83 85 Detected Remcos RAT 2->85 87 3 other signatures 2->87 12 SecuriteInfo.com.FileRepMalware.exe 3 2->12         started        15 win.exe 2->15         started        17 win.exe 2->17         started        signatures3 process4 signatures5 95 Contains functionality to steal Chrome passwords or cookies 12->95 97 Contains functionality to capture and log keystrokes 12->97 99 Contains functionality to inject code into remote processes 12->99 101 Contains functionality to steal Firefox passwords or cookies 12->101 19 cmd.exe 1 12->19         started        21 SecuriteInfo.com.FileRepMalware.exe 4 4 12->21         started        24 cmd.exe 1 12->24         started        30 2 other processes 12->30 103 Hides threads from debuggers 15->103 26 cmd.exe 15->26         started        28 cmd.exe 15->28         started        process6 file7 32 conhost.exe 19->32         started        34 timeout.exe 1 19->34         started        75 C:\Users\user\AppData\Roaming\win.exe, PE32 21->75 dropped 77 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 21->77 dropped 36 wscript.exe 1 21->36         started        38 conhost.exe 24->38         started        40 timeout.exe 1 24->40         started        48 2 other processes 26->48 42 conhost.exe 28->42         started        44 conhost.exe 30->44         started        46 timeout.exe 1 30->46         started        process8 process9 50 WerFault.exe 32->50         started        52 cmd.exe 1 36->52         started        process10 54 win.exe 3 50->54         started        57 conhost.exe 50->57         started        signatures11 89 Multi AV Scanner detection for dropped file 54->89 91 Machine Learning detection for dropped file 54->91 93 Hides threads from debuggers 54->93 59 cmd.exe 54->59         started        61 cmd.exe 54->61         started        63 cmd.exe 54->63         started        process12 process13 65 conhost.exe 59->65         started        67 timeout.exe 59->67         started        69 conhost.exe 61->69         started        71 timeout.exe 61->71         started        73 conhost.exe 63->73         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ceff53de4e1a493db5485f8281c011a98df2c5baa4ac0f8b18757f97501bd48a/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-01-21 08:19:45 UTC
AV detection:
25 of 46 (54.35%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=z37vhxsodjet3nkil6bidqarvgg7frn2uswa7cyyov7zoua32sfa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
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5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
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61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
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82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
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9930543939f97818319ed031530d9e084994331aa4b06a304faeb321bbcc63db
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d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'438 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210121-xccg92smcs/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Program crash
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
gsyagvxnzmkoplbhduisbagtevcnxmzlopljdgye.ydns.eu:2177
Unpacked files
SH256 hash:
647682a29f7809a59784457706717c6ffbb110e4fbe83f6715f8f03ddb75bc63
MD5 hash:
5f1af14cc9127a00844a7d6c8acbdac9
SHA1 hash:
6939b6d3ac89e47a1dcdc932e566c251403961a4
Link:
https://www.unpac.me/results/b4d606b8-6544-46a0-8daa-f100db0ddc00/
SH256 hash:
1715826c8455f1e78e33cf085551f5b36a5f067a425d926e61910fe611b811e1
MD5 hash:
48706d2efb56388680b1ca3e4870c5c5
SHA1 hash:
5c23b75a00fe5c248139e87e1ba2f0096e7f0485
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/b4d606b8-6544-46a0-8daa-f100db0ddc00/
SH256 hash:
ceff53de4e1a493db5485f8281c011a98df2c5baa4ac0f8b18757f97501bd48a
MD5 hash:
140dad8ce059a70557bac14f9a3c27ec
SHA1 hash:
24448bacf3d60298271a4ba5b8d1a0691077a94e
Link:
https://www.unpac.me/results/b4d606b8-6544-46a0-8daa-f100db0ddc00/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ceff53de4e1a493db5485f8281c011a98df2c5baa4ac0f8b18757f97501bd48a

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
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
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.

Web download

RemcosRAT

Executable exe ceff53de4e1a493db5485f8281c011a98df2c5baa4ac0f8b18757f97501bd48a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/972981/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/113253/

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