MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f08283e69eef4b48bec25a82962517ead7c998619d431b6b9eb9b227ad520e84. 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: 13


Intelligence 13 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f08283e69eef4b48bec25a82962517ead7c998619d431b6b9eb9b227ad520e84
SHA3-384 hash: 6cb26eda3008087e918a6ffd77f9ec22f1d585b2b8368f3170654e3de19234a3ec88c4ec263455885522d7b211360cca
SHA1 hash: 38a843f92b5d06d522bb06b3b2c158eb45ec5f26
MD5 hash: 4d7715c57054b475521b9528f50d5585
humanhash: ink-vegan-floor-sink
File name:4d7715c57054b475521b9528f50d5585.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'390'456 bytes
First seen:2021-01-18 16:26:31 UTC
Last seen:2021-01-18 18:24:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:hIxj0vlWMVT7DUPMEI+DT67Unh3L//dpaHsNzR1YKiLna5H1o3zO781ZcvspbFM0:hIxjclWOiqh
Threatray 1'406 similar samples on MalwareBazaar
TLSH F6551C717D6B60A6120157C121D5FFBBDB1FD231B3A3B9F3060882CA4B17DA6689BD09
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996 (46.243.239.31)

Intelligence

File Origin
# of uploads :
2
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4d7715c57054b475521b9528f50d5585.exe
Verdict:
Malicious activity
Analysis date:
2021-01-18 16:33:20 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/edadf53b-65bc-4063-a036-654838ff36be

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/112598/
Detection(s):
SecuriteInfo.com.Heur.MSIL.Krypt.41.10908.9363.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Deleting a recently created file
Creating a file
DNS request
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 in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
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
Connection attempt to an infection source
Result
Verdict:
MALICIOUS
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:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/584007
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
Contains functionalty to change the wallpaper
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: 341041 Sample: jjjinLOg63.exe Startdate: 18/01/2021 Architecture: WINDOWS Score: 100 71 wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu 2->71 73 Malicious sample detected (through community Yara rule) 2->73 75 Multi AV Scanner detection for submitted file 2->75 77 Detected Remcos RAT 2->77 79 3 other signatures 2->79 12 jjjinLOg63.exe 3 2->12         started        15 win.exe 2->15         started        signatures3 process4 signatures5 87 Contains functionalty to change the wallpaper 12->87 89 Contains functionality to steal Chrome passwords or cookies 12->89 91 Contains functionality to capture and log keystrokes 12->91 95 2 other signatures 12->95 17 jjjinLOg63.exe 4 4 12->17         started        20 WerFault.exe 23 9 12->20         started        22 cmd.exe 1 12->22         started        24 3 other processes 12->24 93 Hides threads from debuggers 15->93 process6 file7 65 C:\Users\user\AppData\Roaming\win.exe, PE32 17->65 dropped 67 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 17->67 dropped 26 wscript.exe 1 17->26         started        69 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 20->69 dropped 28 conhost.exe 22->28         started        30 timeout.exe 1 22->30         started        32 conhost.exe 24->32         started        34 conhost.exe 24->34         started        36 timeout.exe 1 24->36         started        38 timeout.exe 1 24->38         started        process8 process9 40 cmd.exe 1 26->40         started        process10 42 win.exe 3 40->42         started        45 conhost.exe 40->45         started        signatures11 81 Multi AV Scanner detection for dropped file 42->81 83 Machine Learning detection for dropped file 42->83 85 Hides threads from debuggers 42->85 47 cmd.exe 42->47         started        49 cmd.exe 42->49         started        51 cmd.exe 42->51         started        process12 process13 53 conhost.exe 47->53         started        55 timeout.exe 47->55         started        57 conhost.exe 49->57         started        59 timeout.exe 49->59         started        61 conhost.exe 51->61         started        63 timeout.exe 51->63         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f08283e69eef4b48bec25a82962517ead7c998619d431b6b9eb9b227ad520e84/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-01-18 16:27:05 UTC
AV detection:
21 of 46 (45.65%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6cbihzu655furpwclkbjmjix5ll4tgdbtvbrw246xgzcplksb2ca._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
9930543939f97818319ed031530d9e084994331aa4b06a304faeb321bbcc63db
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'396 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210118-v34apkq7e6/
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
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:
wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996
Unpacked files
SH256 hash:
c78ce6d905be85ed4d0ba34b4524bd64b976efd16a788a9cdc3302cf6fa25341
MD5 hash:
c536089b4654c2cda24f41971e3641c3
SHA1 hash:
b04f36c2183a89978bc30876f18d8f67161cea6a
Link:
https://www.unpac.me/results/12aca9e5-fed0-4b5f-8810-15df19c51773/
SH256 hash:
0f0e587b49793c5cc302566c3cf4a6d82de0083ad94713f0c67646475fc7c964
MD5 hash:
a72c8d06201e08ee435c1c53a3c5a6f5
SHA1 hash:
4c80291ced668e8b57454dd890fea119549b02f0
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/12aca9e5-fed0-4b5f-8810-15df19c51773/
SH256 hash:
f08283e69eef4b48bec25a82962517ead7c998619d431b6b9eb9b227ad520e84
MD5 hash:
4d7715c57054b475521b9528f50d5585
SHA1 hash:
38a843f92b5d06d522bb06b3b2c158eb45ec5f26
Link:
https://www.unpac.me/results/12aca9e5-fed0-4b5f-8810-15df19c51773/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f08283e69eef4b48bec25a82962517ead7c998619d431b6b9eb9b227ad520e84

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

File information

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

Web download

RemcosRAT

Executable exe f08283e69eef4b48bec25a82962517ead7c998619d431b6b9eb9b227ad520e84

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/969719/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/112598/

Comments