MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21f6a18eab7f51f18819cbf97f353e32e2a2f11de7c0b8c8523eb7c90ea36b8b. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21f6a18eab7f51f18819cbf97f353e32e2a2f11de7c0b8c8523eb7c90ea36b8b
SHA3-384 hash: 860c7bb128e7fe847f2c6b22f24ddf51294d21b3e9361fb03fa8bc4c7ffbf3ef6421753e4d3bfe5c29221cd1af91f965
SHA1 hash: 46a343df094095b8edfcf85f7f5604c9b5619feb
MD5 hash: 2479c3d14c7d3127b996787da9222db4
humanhash: mirror-uncle-xray-hotel
File name:21f6a18eab7f51f18819cbf97f353e32e2a2f11de7c0b8c8523eb7c90ea36b8b
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:793'088 bytes
First seen:2022-12-06 11:47:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:WloNG3Dp09hOX3Mq3jaXhMsFjCshXMQJvTEzNksiD1:WV3DW9hWcqT8Xh8EbG
TLSH T1A7F423D821921337E5417072DA573B73C9CDFA0C8E8B4BE39F04150374AA79C9AA5FA6
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 70c0d0d0c8ccf0f0 (8 x Formbook, 4 x NanoCore, 3 x RedLineStealer)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
196
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/343387/
Detection(s):
Win.Packed.Generickdz-9980352-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
DNS request
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/638f2bf3e2c1ea9defe98651/reports/3321baeb-b8f9-4a8b-a8e2-aa6d245284e3/overview
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7dee34e6-55f9-473d-b717-448328cd9e9b
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1128875
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 761610 Sample: 9ly4dS5t36.exe Startdate: 06/12/2022 Architecture: WINDOWS Score: 100 36 sunshine08.ddns.net 2->36 38 www.google.com 2->38 40 8 other IPs or domains 2->40 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 11 other signatures 2->52 10 9ly4dS5t36.exe 1 1 2->10         started        14 9ly4dS5t36.exe 2->14         started        16 9ly4dS5t36.exe 2->16         started        signatures3 process4 file5 34 C:\Users\user\AppData\...\9ly4dS5t36.exe.log, CSV 10->34 dropped 60 Creates autostart registry keys with suspicious names 10->60 62 Writes to foreign memory regions 10->62 64 Injects a PE file into a foreign processes 10->64 18 CasPol.exe 3 2 10->18         started        signatures6 process7 dnsIp8 42 sunshine08.ddns.net 173.205.83.119, 5687 ASN-QUADRANET-GLOBALUS United States 18->42 32 C:\ProgramData\remcos\logs.dat, data 18->32 dropped 54 Writes to foreign memory regions 18->54 56 Maps a DLL or memory area into another process 18->56 58 Installs a global keyboard hook 18->58 23 svchost.exe 13 18->23         started        file9 signatures10 process11 process12 25 chrome.exe 23->25         started        28 conhost.exe 23->28         started        dnsIp13 44 192.168.2.1 unknown unknown 25->44 30 chrome.exe 25->30         started        process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21f6a18eab7f51f18819cbf97f353e32e2a2f11de7c0b8c8523eb7c90ea36b8b/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-11-21 19:11:07 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
4
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eh3kddvlp5i7dcazzp4x6nj6glrkf4i547alrscsh234sdvdnofq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:sunshine brand:microsoft persistence phishing rat
Link:
https://tria.ge/reports/221206-nye3bsee36/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Detected potential entity reuse from brand microsoft.
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
sunshine08.ddns.net:5687
Unpacked files
SH256 hash:
21f6a18eab7f51f18819cbf97f353e32e2a2f11de7c0b8c8523eb7c90ea36b8b
MD5 hash:
2479c3d14c7d3127b996787da9222db4
SHA1 hash:
46a343df094095b8edfcf85f7f5604c9b5619feb
Link:
https://www.unpac.me/results/a10d8127-6cdf-4a83-8ea8-3e53f3c25be6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/21f6a18eab7f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/21f6a18eab7f51f18819cbf97f353e32e2a2f11de7c0b8c8523eb7c90ea36b8b

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/343387/

Comments