MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c25202298f76f1598a1e169ca435b80541e1db59c542f55e1eb8e3cbf76a419. 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: 10


Intelligence 10 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c25202298f76f1598a1e169ca435b80541e1db59c542f55e1eb8e3cbf76a419
SHA3-384 hash: f577ca235df116a831f9d52ae97460084a1adbfe5341c5d6f08c7348f5968b559033871811a94ed460add5c32e33f457
SHA1 hash: 3198b72457449f357401eafd8e944deae616fdaf
MD5 hash: 6513a43b7fa6d6a0536fb2fe26105dbf
humanhash: low-twenty-friend-social
File name:SRBPolarisV3.5.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:4'526'889 bytes
First seen:2021-01-01 19:11:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 98304:qdvj1XacE/opwwa/l6DcutUzGoZGjGaRnIdFPjTGJXaqd2Y7TOcKG:Ej1fiDwa/l6IucGsARRIdFvAXZYgNKG
Threatray 1 similar samples on MalwareBazaar
TLSH 46263302F9D696B2C5A10D352A7C6612ACBE7C200F24DADFB3A97D1C9DB41C27530F69
Reporter o2genum
Tags:exe RemcosRAT


Avatar
o2genum
Distributed as ZIP.
Packed into RAR SFX for analysis.

Intelligence

File Origin
# of uploads :
1
# of downloads :
279
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SRBPolarisV3.5.exe
Verdict:
Suspicious activity
Analysis date:
2021-01-01 19:12:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/78f32c3c-7f5e-4380-ae3f-97475c2a1652

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/110243/
Detection(s):
SecuriteInfo.com.BackDoor.SiggenNET.5.27436.8753.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Deleting a recently created file
Creating a file in the Windows directory
Moving a file to the Windows directory
Sending a UDP request
Launching a process
Transferring files using the Background Intelligent Transfer Service (BITS)
DNS request
Sending a custom TCP request
Creating a file
Enabling the 'hidden' option for files in the %temp% directory
Moving a recently created file
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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:
Unknown
Detection:
malicious
Classification:
evad.mine
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/572821
Signature
Contains functionality to detect sleep reduction / modifications
Drops executables to the windows directory (C:\Windows) and starts them
Found strings related to Crypto-Mining
Hides threads from debuggers
Hijacks the control flow in another process
Multi AV Scanner detection for dropped file
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
PE file has nameless sections
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4c25202298f76f1598a1e169ca435b80541e1db59c542f55e1eb8e3cbf76a419/
Threat name:
Win32.Trojan.Delf
Create hunting rule
Status:
Malicious
First seen:
2021-01-01 19:12:06 UTC
AV detection:
6 of 28 (21.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jqssaiuy65xrlgfb4fu4uq23qbkb4hnvtrkc6vpb5ohdzp3wuqmq._file
Verdict:
suspicious
Similar samples:
46f9b3a73b2ef17c7ace714e6b69b02e444096fb395d85e3b3220ed13d060a48
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos rat
Link:
https://tria.ge/reports/210101-nzvdfp5r4n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Executes dropped EXE
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
5.61.56.10:9003
Unpacked files
SH256 hash:
4c25202298f76f1598a1e169ca435b80541e1db59c542f55e1eb8e3cbf76a419
MD5 hash:
6513a43b7fa6d6a0536fb2fe26105dbf
SHA1 hash:
3198b72457449f357401eafd8e944deae616fdaf
Link:
https://www.unpac.me/results/faea977d-7af5-4b55-84a5-8263666a0786/
SH256 hash:
a8cee04844cbccd96564c7bf3bbbcdbe5825e7094325382324890a9b194be522
MD5 hash:
461f0a898a65df8004c2f762bdf19831
SHA1 hash:
a252cf126eb19e679b6f683a4110e7b5241b8269
Link:
https://www.unpac.me/results/faea977d-7af5-4b55-84a5-8263666a0786/
SH256 hash:
be52a4b9f97d8a9bd2f30adb27d2fa67b184008e8e2beab256f3fa69c345686f
MD5 hash:
a046f7c5b36cfe0b4f844f7cc7a51c04
SHA1 hash:
3ee458d649d373c09059da70503dbd7beb87b304
Link:
https://www.unpac.me/results/faea977d-7af5-4b55-84a5-8263666a0786/
SH256 hash:
c7fbdc61eb62c05e40295617e2db75877672931f751a770d2629e6eab6075f2c
MD5 hash:
abf6c724b20844d5b0073988a58faf1e
SHA1 hash:
7a8269d5b2ae623f8148ce9863f48f7e12ce036b
Link:
https://www.unpac.me/results/faea977d-7af5-4b55-84a5-8263666a0786/
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/4c25202298f76f1598a1e169ca435b80541e1db59c542f55e1eb8e3cbf76a419

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:crime_win32_rat_parralax_shell_bin
Create hunting rule
Author:@VK_Intel
Description:Detects Parallax injected code
Reference:https://twitter.com/VK_Intel/status/1257714191902937088
Rule name:EnigmaStub
Create hunting rule
Author:@bartblaze
Description:Identifies Enigma packer stub.
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:MAL_crime_win32_rat_parallax_shell_bin
Create hunting rule
Author:@VK_Intel
Description:Detects Parallax injected code
Reference:https://twitter.com/VK_Intel/status/1257714191902937088
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
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 4c25202298f76f1598a1e169ca435b80541e1db59c542f55e1eb8e3cbf76a419

(this sample)

anyrun
any.run
https://app.any.run/tasks/7feb9ee8-7b18-479e-8fe8-81a3c9aa1dc6
  
Link
https://blockchain-media.org/en/srbpolaris-bios-editor/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/110243/

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