MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f39ab4435d56184a143a55aaf080d672d3695f101e4516a31b89b465906e3fb0. 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: 15


Intelligence 15 IOCs YARA 20 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f39ab4435d56184a143a55aaf080d672d3695f101e4516a31b89b465906e3fb0
SHA3-384 hash: 033bea596156ee2c74f9458ac39368da699f4c1d0701b5027432f54607cee1c181a914390b6706e3900b08b50af228ae
SHA1 hash: fe4870a8afba742f7b7929e6f1635d6625fd619a
MD5 hash: 9a9403b17e9320abd92be4e6f9bd003b
humanhash: sink-angel-bulldog-delta
File name:9a9403b17e9320abd92be4e6f9bd003b
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:630'784 bytes
First seen:2022-09-14 02:32:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash be63889866f6bba2109402ee273e5652 (3 x RemcosRAT, 2 x RedLineStealer, 1 x QuasarRAT)
ssdeep 12288:kwqYSESaeJmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS6n9g:kwRSESaeXiLJbpI7I2WhQqZ769g
TLSH T152D4AE02BAD2C072E5B211700D69FB75DABCFC312921956BB3D51D5BFD31080AA2A7B3
TrID 43.4% (.EXE) Win32 Executable Microsoft Visual Basic 6 (82067/2/8)
22.7% (.EXE) InstallShield setup (43053/19/16)
16.5% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
5.5% (.EXE) Win64 Executable (generic) (10523/12/4)
3.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
File icon (PE):PE icon
dhash icon 1003873d31213f10 (142 x DarkCloud, 132 x GuLoader, 35 x a310Logger)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
356
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
http://81.161.229.110/htdocs/dNHAwSjJLKWpyEZ.exe
Verdict:
Malicious activity
Analysis date:
2022-09-14 06:24:44 UTC
Tags:
opendir loader keylogger
Link:
https://app.any.run/tasks/9be053d3-4004-445e-8dea-b5d29d5c0cec

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/309893/
Detection(s):
Win.Malware.Razy-7697300-0
Create hunting rule

Win.Malware.AveMaria-8799014-1
Create hunting rule

Win.Trojan.Remcos-9841897-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Launching cmd.exe command interpreter
DNS request
Running batch commands
Setting a keyboard event handler
Sending a custom TCP request
Launching a process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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.
Malware family:
AVE_MARIA
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cb5167f7-2b2c-4395-ab49-2586be2f0318
Result
Threat name:
AveMaria, Remcos, UACMe
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1069963
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Contains functionality to inject threads in other processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates a thread in another existing process (thread injection)
Delayed program exit found
Hides that the sample has been downloaded from the Internet (zone.identifier)
Increases the number of concurrent connection per server for Internet Explorer
Installs a global keyboard hook
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Potential malicious icon found
Writes to foreign memory regions
Yara detected AveMaria stealer
Yara detected Remcos RAT
Yara detected UACMe UAC Bypass tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 702492 Sample: DWx5EAuJZK.exe Startdate: 14/09/2022 Architecture: WINDOWS Score: 100 51 mutaalofomaha.com 2->51 53 flyerenergy.com 2->53 61 Potential malicious icon found 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for dropped file 2->65 67 15 other signatures 2->67 11 DWx5EAuJZK.exe 3 2->11         started        14 Internet Exploer III.exe 1 2->14         started        16 rtyutgjh.exe 2->16         started        18 rtyutgjh.exe 2->18         started        signatures3 process4 file5 47 C:\Users\user\...\Internet Exploer III.exe, PE32 11->47 dropped 49 C:\Users\user\...\Chrome Extension.exe, PE32 11->49 dropped 20 Chrome Extension.exe 4 3 11->20         started        23 Internet Exploer III.exe 4 2 11->23         started        process6 dnsIp7 43 C:\Users\user\AppData\Roaming\rtyutgjh.exe, PE32 20->43 dropped 45 C:\Users\user\AppData\Local\...\install.vbs, data 20->45 dropped 27 wscript.exe 1 20->27         started        59 mutaalofomaha.com 216.250.254.198, 49725, 49730, 49733 AS-TIERP-19019US United States 23->59 77 Writes to foreign memory regions 23->77 79 Allocates memory in foreign processes 23->79 81 Increases the number of concurrent connection per server for Internet Explorer 23->81 83 2 other signatures 23->83 29 cmd.exe 1 23->29         started        file8 signatures9 process10 process11 31 cmd.exe 1 27->31         started        33 conhost.exe 29->33         started        process12 35 rtyutgjh.exe 3 1 31->35         started        39 conhost.exe 31->39         started        dnsIp13 55 flyerenergy.com 74.119.193.121, 1984, 49728, 49729 MOVECLICKLLCUS United States 35->55 57 192.168.2.1 unknown unknown 35->57 69 Antivirus detection for dropped file 35->69 71 Multi AV Scanner detection for dropped file 35->71 73 Machine Learning detection for dropped file 35->73 75 3 other signatures 35->75 41 svchost.exe 35->41         started        signatures14 process15
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f39ab4435d56184a143a55aaf080d672d3695f101e4516a31b89b465906e3fb0/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-09-14 02:35:26 UTC
File Type:
PE (Exe)
Extracted files:
18
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6onliq25kymeufb2kwvpbagwoljwsxyqdzcrniy3rg2gledoh6ya._file
Verdict:
malicious
Label(s):
avemaria
Create hunting rule
remcos
Create hunting rule
Result
Malware family:
warzonerat
Create hunting rule
Score:
  10/10
Tags:
family:remcos family:warzonerat botnet:divinemoney infostealer persistence rat
Link:
https://tria.ge/reports/220914-c1v1sahba8/
Behaviour
Modifies registry class
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Warzone RAT payload
Remcos
WarzoneRat, AveMaria
Malware Config
C2 Extraction:
mutaalofomaha.com:5566
flyerenergy.com:1984
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4004be8d-a1b3-4d4d-bd56-2d51ae20d49d
Unpacked files
SH256 hash:
f39ab4435d56184a143a55aaf080d672d3695f101e4516a31b89b465906e3fb0
MD5 hash:
9a9403b17e9320abd92be4e6f9bd003b
SHA1 hash:
fe4870a8afba742f7b7929e6f1635d6625fd619a
Detections:
Warzone
Create hunting rule
win_remcos_auto
Create hunting rule
win_ave_maria_g0
Create hunting rule
Link:
https://www.unpac.me/results/32f79502-6202-41a1-9e3d-e69f83bc1b86/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f39ab4435d56/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/f39ab4435d56184a143a55aaf080d672d3695f101e4516a31b89b465906e3fb0

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:AveMaria
Create hunting rule
Author:@bartblaze
Description:Identifies AveMaria aka WarZone RAT.
Rule name:ave_maria_warzone_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Codoso_Gh0st_1
Create hunting rule
Author:Florian Roth
Description:Detects Codoso APT Gh0st Malware
Reference:https://www.proofpoint.com/us/exploring-bergard-old-malware-new-tricks
Rule name:Codoso_Gh0st_1_RID2C2D
Create hunting rule
Author:Florian Roth
Description:Detects Codoso APT Gh0st Malware
Reference:https://www.proofpoint.com/us/exploring-bergard-old-malware-new-tricks
Rule name:HeavensGate
Create hunting rule
Author:kevoreilly
Description:Heaven's Gate: Switch from 32-bit to 64-mode
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding command execution via IExecuteCommand COM object
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:MALWARE_Win_AveMaria
Create hunting rule
Author:ditekSHen
Description:AveMaria variant payload
Rule name:MALWARE_Win_EXEPWSH_DLAgent
Create hunting rule
Author:ditekSHen
Description:Detects SystemBC
Rule name:MALWARE_Win_WarzoneRAT
Create hunting rule
Author:ditekSHen
Description:Detects AveMaria/WarzoneRAT
Rule name:MAL_Envrial_Jan18_1
Create hunting rule
Author:Florian Roth
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:MAL_Envrial_Jan18_1_RID2D8C
Create hunting rule
Author:Florian Roth
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:meth_peb_parsing
Create hunting rule
Author:Willi Ballenthin
Rule name:RansomwareTest4
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RDPWrap
Create hunting rule
Author:@bartblaze
Description:Identifies RDP Wrapper, sometimes used by attackers to maintain persistence.
Reference:https://github.com/stascorp/rdpwrap
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
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:Detects win.remcos.

File information

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

Web download

RemcosRAT

Executable exe f39ab4435d56184a143a55aaf080d672d3695f101e4516a31b89b465906e3fb0

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2302142/
Cape
Cape
https://www.capesandbox.com/analysis/309893/
  
URLhaus
https://urlhaus.abuse.ch/url/2302320/

Comments


Avatar
zbet commented on 2022-09-14 02:32:45 UTC

url : hxxp://81.161.229.110/htdocs/dNHAwSjJLKWpyEZ.exe