MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a
SHA3-384 hash: 2f7245acb79b362db434660bd235483c1c8d987364f5c9749fbce977256a25b01e416d30a1e44f33f9321c78eccd0b90
SHA1 hash: 232b7b5d0ddaf74290eb4255df89ec9c97d10679
MD5 hash: 0f7b882782215a347db43e0d23faa659
humanhash: happy-quebec-victor-uncle
File name:a.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:6'144 bytes
First seen:2023-05-05 15:31:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'476 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 48:6SlzmldOWI5yAHN39fK0FplFcXJhyPFlL/J3th+kYvd4YgW3gp6cOulavTqXSfbi:FEOIQNVjrXcWD7RtwkYv1op7svNzNt
TLSH T177C1C60AB7D49636D4BE4B3404B3831062BEF6429E279F0E1CE402DEBF1A774C956AD1
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter Chainskilabs
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
270
Origin country :
US US
Vendor Threat Intelligence
Malware family:
redline
Create hunting rule
ID:
1
File name:
a.exe
Verdict:
Malicious activity
Analysis date:
2023-05-05 06:32:07 UTC
Tags:
rat redline amadey trojan loader opendir keylogger
Link:
https://app.any.run/tasks/d021412d-20e5-4a98-a106-a67162696a30

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/386990/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.30774.11641.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Creating a process from a recently created file
Searching for the window
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching the default Windows debugger (dwwin.exe)
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
Creating a file in the %temp% subdirectories
Running batch commands
Creating a window
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Deleting volume shadow copies
Unauthorized injection to a system process
Sending an HTTP GET request to an infection source
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/481003de-5ce1-4b41-8399-838ad89888c2
Result
Threat name:
Amadey, AveMaria, Nitol, RedLine, Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.bank.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1227094
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Creates multiple autostart registry keys
Deletes shadow drive data (may be related to ransomware)
Detected unpacking (changes PE section rights)
Disables UAC (registry)
Drops PE files with benign system names
Encrypted powershell cmdline option found
Found malware configuration
Increases the number of concurrent connection per server for Internet Explorer
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious encrypted Powershell command line found
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
May disable shadow drive data (uses vssadmin)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sample uses string decryption to hide its real strings
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Amadeys stealer DLL
Yara detected AveMaria stealer
Yara detected Nitol
Yara detected Powershell download and execute
Yara detected RedLine Stealer
Yara detected Remcos RAT
Yara detected SmokeLoader
Yara detected UAC Bypass using CMSTP
Yara detected UACMe UAC Bypass tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 860059 Sample: a.exe Startdate: 05/05/2023 Architecture: WINDOWS Score: 100 106 Found malware configuration 2->106 108 Malicious sample detected (through community Yara rule) 2->108 110 Antivirus detection for URL or domain 2->110 112 22 other signatures 2->112 8 a.exe 14 44 2->8         started        process3 dnsIp4 96 77.91.124.20 ECOTEL-ASRU Russian Federation 8->96 98 85.217.144.143 WS171-ASRU Bulgaria 8->98 100 21 other IPs or domains 8->100 70 C:\Users\user\Desktop\a\workfinezx.exe, PE32 8->70 dropped 72 C:\Users\user\Desktop\a\word.exe, PE32+ 8->72 dropped 74 C:\Users\user\Desktop\a\vpn.exe, MS-DOS 8->74 dropped 76 48 other malicious files 8->76 dropped 114 Drops PE files with benign system names 8->114 13 Lyla131.exe 8->13         started        17 file.exe 8->17         started        19 ostaj2.1.exe 8->19         started        21 14 other processes 8->21 file5 signatures6 process7 file8 78 C:\Users\user\AppData\Local\...\UserInfo.dll, PE32 13->78 dropped 80 C:\Users\user\AppData\Local\...\System.dll, PE32 13->80 dropped 82 C:\Users\user\AppData\Local\Temp\...\Math.dll, PE32 13->82 dropped 92 5 other files (4 malicious) 13->92 dropped 132 Multi AV Scanner detection for dropped file 13->132 134 Creates multiple autostart registry keys 13->134 136 Disables UAC (registry) 13->136 38 2 other processes 13->38 138 Malicious encrypted Powershell command line found 17->138 140 Encrypted powershell cmdline option found 17->140 23 powershell.exe 17->23         started        26 powershell.exe 17->26         started        40 2 other processes 17->40 84 C:\Users\user\AppData\...\okktdyyhqq.exe, PE32 19->84 dropped 86 C:\Users\user\AppData\Local\...\graaj.dll, PE32 19->86 dropped 142 Maps a DLL or memory area into another process 19->142 29 ostaj2.1.exe 19->29         started        88 C:\Users\user\AppData\Roaming\miner.exe, PE32+ 21->88 dropped 90 C:\Users\user\AppData\...\Bgecsflz.exe, PE32 21->90 dropped 94 10 other files (9 malicious) 21->94 dropped 144 Detected unpacking (changes PE section rights) 21->144 146 Injects a PE file into a foreign processes 21->146 32 v3740957.exe 21->32         started        34 x2950149.exe 21->34         started        36 cmd.exe 21->36         started        42 6 other processes 21->42 signatures9 process10 dnsIp11 56 C:\Users\user\AppData\Roaming\lsass.exe, PE32 23->56 dropped 58 C:\Users\user\AppData\Roaming\dllhost.exe, PE32 23->58 dropped 60 C:\Users\user\AppData\Roaming\OneDrive.exe, PE32+ 23->60 dropped 44 conhost.exe 23->44         started        116 Drops PE files with benign system names 26->116 118 Powershell drops PE file 26->118 46 conhost.exe 26->46         started        102 212.8.244.201 ITLDC-NLUA Russian Federation 29->102 120 Increases the number of concurrent connection per server for Internet Explorer 29->120 122 Installs a global keyboard hook 29->122 62 C:\Users\user\AppData\Local\...\b7564474.exe, PE32 32->62 dropped 64 C:\Users\user\AppData\Local\...\a7904087.exe, PE32 32->64 dropped 124 Antivirus detection for dropped file 32->124 126 Machine Learning detection for dropped file 32->126 66 C:\Users\user\AppData\Local\...\h9425979.exe, PE32 34->66 dropped 68 C:\Users\user\AppData\Local\...\g8063956.exe, PE32 34->68 dropped 128 May disable shadow drive data (uses vssadmin) 36->128 130 Deletes shadow drive data (may be related to ransomware) 36->130 48 vssadmin.exe 36->48         started        50 conhost.exe 40->50         started        52 conhost.exe 40->52         started        104 13.89.179.12 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 42->104 54 conhost.exe 42->54         started        file12 signatures13 process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a/
Threat name:
Win32.Trojan.Amadey
Create hunting rule
Status:
Suspicious
First seen:
2023-05-05 08:08:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kweuj7bk37gqkgrpkxhrqfa5bnxhakbnkg5uexsagxaj2onkysna._file
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:amadey family:gh0strat family:lgoogloader family:redline family:sectoprat family:smokeloader family:warzonerat family:xmrig botnet:pu10 botnet:sprg backdoor downloader infostealer miner ransomware rat trojan upx
Link:
https://tria.ge/reports/230505-sylmbsbc63/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Interacts with shadow copies
Kills process with taskkill
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Program crash
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
.NET Reactor proctector
Checks computer location settings
Executes dropped EXE
UPX packed file
Uses the VBS compiler for execution
Downloads MZ/PE file
Deletes shadow copies
Warzone RAT payload
Amadey
Detects LgoogLoader payload
Gh0st RAT payload
Gh0strat
LgoogLoader
RedLine
RedLine payload
SectopRAT
SectopRAT payload
SmokeLoader
WarzoneRat, AveMaria
XMRig Miner payload
xmrig
Malware Config
C2 Extraction:
jeron7.duckdns.org:2905
Dropper Extraction:
http://62.204.41.23/r.png
http://62.204.41.23/file.png
http://62.204.41.23/o.png
Unpacked files
SH256 hash:
558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a
MD5 hash:
0f7b882782215a347db43e0d23faa659
SHA1 hash:
232b7b5d0ddaf74290eb4255df89ec9c97d10679
Link:
https://www.unpac.me/results/4f06c37f-00d2-476c-84e4-cc592a52eba1/
Malware family:
RedNet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/558944fc2adf/report/overview.html
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/558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a

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:MSIL_TinyDownloader_Generic
Create hunting rule
Author:albertzsigovits
Description:Detects small-sized dotNET downloaders
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe 558944fc2adfcd051a2f55cf18141d0b6e70282d51bb425e4035c09d39aac49a

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/386990/

Comments