MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 566f71be697a18778afe097f9461ef1fa7f6fbf0cf634995561e971814eae319. 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: 9


Intelligence 9 IOCs 1 YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 566f71be697a18778afe097f9461ef1fa7f6fbf0cf634995561e971814eae319
SHA3-384 hash: a1dc67ee648beed7abc4db489847daf2e9f7aed555ae8dbfbb0bcb1fa4eac0dd7155929f21ba9cc0ea35c6bf840b0036
SHA1 hash: 6b8430a8b5bd8965bbac50feac7255d631d41f5c
MD5 hash: d3125370ba418b71a02b9365db6929d0
humanhash: mike-april-colorado-seventeen
File name:Factura Serfinanza038612482397383420891150743.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'420'160 bytes
First seen:2021-05-06 02:06:05 UTC
Last seen:2021-05-06 03:11:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 3072:1RqoWgaMoWNVGaZqCAjXylyUyea4bE1tU3ypi3SsdP5Wp53U3kEPgWycyT8Lni6c:1b7yTh69tSdp5dZ
TLSH 7BF50CA476F1C48E78F1BB545BD526C8004FEFF132302698BB2A9761573A9CB59E43B0
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
186.169.43.144:3521

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
186.169.43.144:3521 https://threatfox.abuse.ch/ioc/29934/

Intelligence

File Origin
# of uploads :
3
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/151171/
Detection(s):
SecuriteInfo.com.ArtemisD3125370BA41.10260.23972.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Launching a service
Sending a UDP request
Deleting a recently created file
Launching a process
Running batch commands
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file
Creating a window
DNS 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
Connection attempt to an infection source
Adding exclusions to Windows Defender
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/712896
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
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
Found malware configuration
Hides threads from debuggers
Injects a PE file into a foreign processes
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
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 405374 Sample: Factura Serfinanza038612482... Startdate: 06/05/2021 Architecture: WINDOWS Score: 100 76 databasepropersonombrecomercialideasearchwords.services 2->76 80 Multi AV Scanner detection for domain / URL 2->80 82 Found malware configuration 2->82 84 Malicious sample detected (through community Yara rule) 2->84 86 14 other signatures 2->86 12 Factura Serfinanza038612482397383420891150743.exe 6 6 2->12         started        17 PxxoServicesTrialNet1.exe 2->17         started        19 PxxoServicesTrialNet1.exe 2->19         started        signatures3 process4 dnsIp5 78 192.168.2.1 unknown unknown 12->78 70 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 12->70 dropped 96 Adds a directory exclusion to Windows Defender 12->96 98 Hides threads from debuggers 12->98 100 Injects a PE file into a foreign processes 12->100 21 Factura Serfinanza038612482397383420891150743.exe 12->21         started        24 cmd.exe 1 12->24         started        26 powershell.exe 25 12->26         started        34 2 other processes 12->34 72 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 17->72 dropped 28 AdvancedRun.exe 17->28         started        30 powershell.exe 17->30         started        74 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 19->74 dropped 32 AdvancedRun.exe 19->32         started        file6 signatures7 process8 file9 64 C:\Users\user\...\PxxoServicesTrialNet1.exe, PE32 21->64 dropped 66 PxxoServicesTrialN...exe:Zone.Identifier, ASCII 21->66 dropped 68 C:\Users\user\AppData\Local\...\install.vbs, data 21->68 dropped 36 wscript.exe 21->36         started        38 conhost.exe 24->38         started        40 timeout.exe 1 24->40         started        42 conhost.exe 26->42         started        44 AdvancedRun.exe 28->44         started        46 AdvancedRun.exe 32->46         started        48 AdvancedRun.exe 34->48         started        process10 process11 50 cmd.exe 36->50         started        process12 52 PxxoServicesTrialNet1.exe 50->52         started        56 conhost.exe 50->56         started        file13 62 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 52->62 dropped 88 Multi AV Scanner detection for dropped file 52->88 90 Machine Learning detection for dropped file 52->90 92 Adds a directory exclusion to Windows Defender 52->92 94 2 other signatures 52->94 58 AdvancedRun.exe 52->58         started        signatures14 process15 process16 60 AdvancedRun.exe 58->60         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/566f71be697a18778afe097f9461ef1fa7f6fbf0cf634995561e971814eae319/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kzxxdptjpimhpcx6bf7ziyppd6t7n67qz5rutfkwd2lrqfhk4mmq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos evasion persistence rat trojan
Link:
https://tria.ge/reports/210506-46elk9ezgj/
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
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Windows security modification
Executes dropped EXE
Nirsoft
Modifies Windows Defender Real-time Protection settings
Remcos
Turns off Windows Defender SpyNet reporting
Windows security bypass
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:3521
Unpacked files
SH256 hash:
7f1d5a30411af2b87d066e72baea938657c23aec6e2bd4be23aa20e2e196746b
MD5 hash:
3711b387b4c08371eed9acff5d52d56f
SHA1 hash:
5d4bd2ee9acbd8d84f277bbbe10b4fe4a9265874
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/16b62a57-4461-4ae3-a6e7-3798a0f10df2/
SH256 hash:
3da80bd8e18bf2ef5e28f5e2e0d2095b0d4e65391800ce18f9a18859d7beb220
MD5 hash:
5dbed7594d4c8d71c1882692e6776bf0
SHA1 hash:
8552a2f2afca501945fe57c1875970b6f777f709
Link:
https://www.unpac.me/results/16b62a57-4461-4ae3-a6e7-3798a0f10df2/
SH256 hash:
6b745a1b2f7ca45e4315aa737091caac66ca9f05ba36444358ac6a78fc133f96
MD5 hash:
2afd2c63e746a9ed561c74cfea364472
SHA1 hash:
54f511d1a162596e18d72eeb1bfd852360f497e7
Link:
https://www.unpac.me/results/16b62a57-4461-4ae3-a6e7-3798a0f10df2/
SH256 hash:
566f71be697a18778afe097f9461ef1fa7f6fbf0cf634995561e971814eae319
MD5 hash:
d3125370ba418b71a02b9365db6929d0
SHA1 hash:
6b8430a8b5bd8965bbac50feac7255d631d41f5c
Link:
https://www.unpac.me/results/16b62a57-4461-4ae3-a6e7-3798a0f10df2/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/566f71be697a18778afe097f9461ef1fa7f6fbf0cf634995561e971814eae319

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Cape
Cape
https://www.capesandbox.com/analysis/151171/

Comments