MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bfd45ef21e21655c921b457242c1d4e05a1e979d0051a4195192d8e17b7bed38. 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: 13


Intelligence 13 IOCs YARA 9 File information Comments

SHA256 hash: bfd45ef21e21655c921b457242c1d4e05a1e979d0051a4195192d8e17b7bed38
SHA3-384 hash: 27e6e19118263ff96abcd8a04e34bbe8c33137d8764c7379aa2e6a888009b70164e485bb472f8ff8e21afc7c5ef3d9ea
SHA1 hash: 6e43961c03b7b1c5294e15e4964e26f0e86fac3e
MD5 hash: fb480a117637525e26ae6c9c07157180
humanhash: september-arkansas-ohio-dakota
File name:AWS QOUTATION 768854_SCAN_PDF.exe
Download: download sample
Signature RemcosRAT
File size:468'992 bytes
First seen:2021-09-24 22:24:21 UTC
Last seen:2021-09-27 06:15:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ec8ea73e2aa6f868311acc5b792bc222 (10 x RemcosRAT)
ssdeep 12288:gf+Ud9dFEvMNIWXLg4SPw5+rTmu/ZIzWEb:pUdyvMNDU25+r6YZ3e
Threatray 638 similar samples on MalwareBazaar
TLSH T16BA49D12B891C032C17212700D69FB759ABCBD212D3549BB73E92D5BFE710D1BB2A663
File icon (PE):PE icon
dhash icon c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
202
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
AWS QOUTATION 768854_SCAN_PDF.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-24 22:26:44 UTC
Tags:
keylogger

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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 inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an undocumented autostart registry key
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 sample detected (through community Yara rule)
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
Sigma detected: WScript or CScript Dropper
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 490115 Sample: AWS QOUTATION 768854_SCAN_PDF.exe Startdate: 25/09/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for dropped file 2->40 42 16 other signatures 2->42 9 AWS QOUTATION 768854_SCAN_PDF.exe 4 5 2->9         started        process3 file4 28 C:\Program Files (x86)\...\TaskMgr.exe, PE32 9->28 dropped 30 C:\Users\user\AppData\Local\...\install.vbs, data 9->30 dropped 32 C:\...\TaskMgr.exe:Zone.Identifier, ASCII 9->32 dropped 58 Creates an undocumented autostart registry key 9->58 13 wscript.exe 1 9->13         started        signatures5 process6 process7 15 cmd.exe 1 13->15         started        process8 17 TaskMgr.exe 3 3 15->17         started        21 conhost.exe 15->21         started        dnsIp9 34 103.156.92.178, 1010, 49708, 49717 TWIDC-AS-APTWIDCLimitedHK unknown 17->34 44 Detected Remcos RAT 17->44 46 Writes to foreign memory regions 17->46 48 Allocates memory in foreign processes 17->48 50 2 other signatures 17->50 23 svchost.exe 17->23         started        26 iexplore.exe 17->26         started        signatures10 process11 signatures12 52 Contains functionality to steal Chrome passwords or cookies 23->52 54 Contains functionality to steal Firefox passwords or cookies 23->54 56 Delayed program exit found 23->56
Threat name:
Win32.Backdoor.Remcos
Status:
Malicious
First seen:
2021-09-24 22:25:10 UTC
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:system data analyser persistence rat
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Loads dropped DLL
Adds policy Run key to start application
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
103.156.92.178:1010
Unpacked files
SH256 hash:
bfd45ef21e21655c921b457242c1d4e05a1e979d0051a4195192d8e17b7bed38
MD5 hash:
fb480a117637525e26ae6c9c07157180
SHA1 hash:
6e43961c03b7b1c5294e15e4964e26f0e86fac3e
Detections:
win_remcos_g0
Malware family:
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:abuse.ch
Rule name:INDICATOR_EXE_Packed_MPress
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_Messaging_Clients
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:REMCOS_RAT_variants

File information


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

Malspam

RemcosRAT

Executable exe bfd45ef21e21655c921b457242c1d4e05a1e979d0051a4195192d8e17b7bed38

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment

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