MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1eba9d62821249bd0de469a9443c21425cadddad2a3f8a37ff1e6d0754f5bf4. 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: b1eba9d62821249bd0de469a9443c21425cadddad2a3f8a37ff1e6d0754f5bf4
SHA3-384 hash: 1e86f04e1e052c0406da027bda3ecdd99372640d86d499fdd575d96f2ad85333b93344b846b9c27102e17a6facc68fb8
SHA1 hash: d069ed748f9e5c5ba5d643e54f70b7797969314e
MD5 hash: a4dea01792910d8c09ccb492f0cbbac9
humanhash: moon-stairway-seven-crazy
File name:a4dea01792910d8c09ccb492f0cbbac9.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'362'944 bytes
First seen:2021-02-01 07:47:58 UTC
Last seen:2021-02-01 09:45:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'813 x AgentTesla, 19'735 x Formbook, 12'282 x SnakeKeylogger)
ssdeep 12288:WVI3bS00o6dC9VAngIncbVHiIPkrmuFH01hyQiEnFKgmpRuusN3siMFkKg5j7V6f:
Threatray 1'486 similar samples on MalwareBazaar
TLSH 635531896FCF4B5CB9BB2C4C3BE1161A2415FE55EF168312A88325481DB3C94DFB6C1A
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
gdyhjjdhbvxgsfe.gotdns.ch:2177

Intelligence

File Origin
# of uploads :
2
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
swift.doc
Verdict:
Malicious activity
Analysis date:
2021-01-29 09:47:49 UTC
Tags:
exploit CVE-2017-11882 loader trojan rat remcos keylogger stealer
Link:
https://app.any.run/tasks/12e717b8-5293-4d96-a775-7d35085b91bf

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/114410/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
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
Sending a UDP request
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
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:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/595076
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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 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 signatures2 2 Behavior Graph ID: 346574 Sample: sMjtvTsYf5.exe Startdate: 01/02/2021 Architecture: WINDOWS Score: 100 82 Multi AV Scanner detection for domain / URL 2->82 84 Malicious sample detected (through community Yara rule) 2->84 86 Antivirus / Scanner detection for submitted sample 2->86 88 7 other signatures 2->88 11 sMjtvTsYf5.exe 3 2->11         started        14 win.exe 2->14         started        16 win.exe 2->16         started        process3 signatures4 98 Contains functionality to steal Chrome passwords or cookies 11->98 100 Contains functionality to capture and log keystrokes 11->100 102 Contains functionality to inject code into remote processes 11->102 104 Contains functionality to steal Firefox passwords or cookies 11->104 18 sMjtvTsYf5.exe 4 4 11->18         started        21 WerFault.exe 23 9 11->21         started        23 cmd.exe 1 11->23         started        25 sMjtvTsYf5.exe 11->25         started        106 Hides threads from debuggers 14->106 27 cmd.exe 14->27         started        29 win.exe 14->29         started        31 WerFault.exe 14->31         started        33 cmd.exe 16->33         started        35 win.exe 16->35         started        process5 file6 72 C:\Users\user\AppData\Roaming\win.exe, PE32 18->72 dropped 74 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 18->74 dropped 37 wscript.exe 1 18->37         started        76 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->76 dropped 40 conhost.exe 23->40         started        42 timeout.exe 1 23->42         started        44 conhost.exe 27->44         started        46 timeout.exe 27->46         started        48 conhost.exe 33->48         started        50 timeout.exe 33->50         started        process7 dnsIp8 78 192.168.2.1 unknown unknown 37->78 52 cmd.exe 1 37->52         started        process9 process10 54 win.exe 3 52->54         started        57 conhost.exe 52->57         started        signatures11 90 Antivirus detection for dropped file 54->90 92 Multi AV Scanner detection for dropped file 54->92 94 Machine Learning detection for dropped file 54->94 96 Hides threads from debuggers 54->96 59 win.exe 54->59         started        62 cmd.exe 54->62         started        64 win.exe 54->64         started        66 WerFault.exe 54->66         started        process12 dnsIp13 80 gdyhjjdhbvxgsfe.gotdns.ch 192.253.250.161, 2177, 49732 THORDC-ASIS United States 59->80 68 conhost.exe 62->68         started        70 timeout.exe 62->70         started        process14
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b1eba9d62821249bd0de469a9443c21425cadddad2a3f8a37ff1e6d0754f5bf4/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-01-29 03:32:30 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=whv2tvrieesjxug6i2njiq6ccqs4vxo22kr7ri376htna5kplp2a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
9930543939f97818319ed031530d9e084994331aa4b06a304faeb321bbcc63db
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'476 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/210201-bhk2hpc35n/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
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:
gdyhjjdhbvxgsfe.gotdns.ch:2177
Unpacked files
SH256 hash:
9954d5197e1edc2ecb5457fb47b2cbe34aa71f74b40e1094711eecbbcd3ca83b
MD5 hash:
9b417aee5b0f6c7e74eed722382803df
SHA1 hash:
5f4a8e1220c4aa873f0263070d6d6e2d053f22f8
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/3a4d9cf0-5326-49d7-8edb-780c81d63cb8/
SH256 hash:
0d1a9a329bee75ed8c8999abaefab4563a6c337acc4eac0dbb089ea3ffb22308
MD5 hash:
27bdba62876b2a126a522bea80e6d5fe
SHA1 hash:
795e136dfb0c9c706f131b28a37c2ceb41778870
Link:
https://www.unpac.me/results/3a4d9cf0-5326-49d7-8edb-780c81d63cb8/
SH256 hash:
b1eba9d62821249bd0de469a9443c21425cadddad2a3f8a37ff1e6d0754f5bf4
MD5 hash:
a4dea01792910d8c09ccb492f0cbbac9
SHA1 hash:
d069ed748f9e5c5ba5d643e54f70b7797969314e
Link:
https://www.unpac.me/results/3a4d9cf0-5326-49d7-8edb-780c81d63cb8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b1eba9d62821249bd0de469a9443c21425cadddad2a3f8a37ff1e6d0754f5bf4

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 b1eba9d62821249bd0de469a9443c21425cadddad2a3f8a37ff1e6d0754f5bf4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/978561/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/114410/

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