MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fd898ae2d8b5e50c7b61c0f37d1e72210fc7c6c1c0b9421b0cc7672ad7eb7bb5. 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 7 File information Comments
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SHA256 hash: fd898ae2d8b5e50c7b61c0f37d1e72210fc7c6c1c0b9421b0cc7672ad7eb7bb5
SHA3-384 hash: 97acd4cc209bd8470a08c8a7af79296ee81373ed5331e2bd47a2c53cad60c783dc13bb08e0993dd1407e6dbeb2b3180b
SHA1 hash: 47772217a217b01ddebf693760ce0cb2831d41d0
MD5 hash: 2182ad44af508ba0a68adc52cf0be0b9
humanhash: neptune-bluebird-violet-lactose
File name:RFQ_ORDER4844250833-NJQ.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'343'488 bytes
First seen:2022-01-29 18:17:41 UTC
Last seen:2022-01-29 19:42:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:+AxICmA93h/oFgNyemOohvos1H2hmE2MPrCvV0s4aIoIhI:PxIuxRbNcOohvX1H24E9rSIoIhI
TLSH T18A55D01233E8BE9ED2BA47346B3743D08B39FE195411D51E74D0728E887D742BA127AB
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
323
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ_ORDER4844250833-NJQ.exe
Verdict:
Malicious activity
Analysis date:
2022-01-29 18:21:20 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/79e95586-17ca-45dd-b9b9-ed95154fbc6a

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/225813/
Detection(s):
SecuriteInfo.com.UDS.Backdoor.MSIL.Remcos.gen.21916.10482.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Adding an access-denied ACE
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Launching the process to interact with network services
Creating a file in the Windows subdirectories
Creating a window
Sending an HTTP GET request
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a single autorun event
Forced shutdown of a system process
Adding exclusions to Windows Defender
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/61f584dd533699b5ff215c32/reports/41ff9223-2319-46c0-a6fb-7a72cd6c9339/overview
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/b764fbd4-48bc-406c-870b-e3135bdf61ff
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/930196
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Adds a new user with administrator rights
Changes security center settings (notifications, updates, antivirus, firewall)
Contains functionality to hide user accounts
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 autostart registry key pointing to binary in C:\Windows
Delayed program exit found
Detected Remcos RAT
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Accessing WinAPI in PowerShell. Code Injection.
Sigma detected: Active Directory User Backdoors
Sigma detected: Bypass UAC via CMSTP
Sigma detected: File Created with System Process Name
Sigma detected: Hurricane Panda Activity
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Remote Thread Created
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 562670 Sample: RFQ_ORDER4844250833-NJQ.exe Startdate: 29/01/2022 Architecture: WINDOWS Score: 100 60 Malicious sample detected (through community Yara rule) 2->60 62 Multi AV Scanner detection for submitted file 2->62 64 Detected Remcos RAT 2->64 66 16 other signatures 2->66 7 RFQ_ORDER4844250833-NJQ.exe 5 6 2->7         started        11 svchost.exe 2->11         started        13 svchost.exe 2->13         started        15 7 other processes 2->15 process3 dnsIp4 50 C:\Windows\Microsoft.NET\...\svchost.exe, PE32 7->50 dropped 52 C:\Users\...\RFQ_ORDER4844250833-NJQ.exe.log, ASCII 7->52 dropped 76 Creates an autostart registry key pointing to binary in C:\Windows 7->76 78 Uses schtasks.exe or at.exe to add and modify task schedules 7->78 80 Adds a directory exclusion to Windows Defender 7->80 86 2 other signatures 7->86 18 findstr.exe 7->18         started        22 net.exe 1 7->22         started        24 net.exe 1 7->24         started        30 8 other processes 7->30 54 C:\Windows\Temp\3lvnc2ji.inf, Windows 11->54 dropped 82 Multi AV Scanner detection for dropped file 11->82 26 powershell.exe 11->26         started        28 cmstp.exe 11->28         started        84 Changes security center settings (notifications, updates, antivirus, firewall) 13->84 58 192.168.2.1 unknown unknown 15->58 file5 signatures6 process7 dnsIp8 56 185.140.53.178, 2404, 49749, 49752 DAVID_CRAIGGG Sweden 18->56 68 Contains functionality to steal Chrome passwords or cookies 18->68 70 Contains functionality to inject code into remote processes 18->70 72 Contains functionality to steal Firefox passwords or cookies 18->72 74 Delayed program exit found 18->74 32 conhost.exe 22->32         started        34 net1.exe 1 22->34         started        36 conhost.exe 24->36         started        38 net1.exe 1 24->38         started        40 conhost.exe 26->40         started        42 conhost.exe 30->42         started        44 conhost.exe 30->44         started        46 net1.exe 30->46         started        48 6 other processes 30->48 signatures9 process10
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fd898ae2d8b5e50c7b61c0f37d1e72210fc7c6c1c0b9421b0cc7672ad7eb7bb5/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-01-29 17:31:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
90
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7weyvywywxsqy63bydzx2htseeh4prwbyc4uegymy5tsvv7lpo2q._file
Verdict:
malicious
Label(s):
remcos
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agenttesla
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Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:osc stub evasion persistence rat trojan
Link:
https://tria.ge/reports/220129-wxl39afbfq/
Behaviour
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks BIOS information in registry
Windows security modification
Grants admin privileges
Remcos
Windows security bypass
Malware Config
C2 Extraction:
185.140.53.178:2404
Unpacked files
SH256 hash:
ae410d4261b1db7d70c6df2880411df968a5aa186e31c385db25ca5fbe908d52
MD5 hash:
a8630b2892006e0da1047f57dfcec109
SHA1 hash:
bf3b0713a046ccc2bcfd42bbffdbbbfb04e743b3
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/c242546a-a378-47c9-a80b-4c188f963e49/
SH256 hash:
0055a6e09826d14245545ed9d0a3c107b38a8d9c1d5706a9ed0d3f7d8045a410
MD5 hash:
4626d7fbe9795cb56e81a900c7c04fe8
SHA1 hash:
7427c3bc033a9b4875a39f31a21bfdb085b9ed13
Link:
https://www.unpac.me/results/c242546a-a378-47c9-a80b-4c188f963e49/
SH256 hash:
c4fc1ca580bbad436f6dd875ddd361a9b3912209f0a335796813f9822898388a
MD5 hash:
f4811676f5935503fded3664918deaf4
SHA1 hash:
40589f083b16f00c65e2fb509f6ae6080ca448f4
Link:
https://www.unpac.me/results/c242546a-a378-47c9-a80b-4c188f963e49/
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
Link:
https://www.unpac.me/results/c242546a-a378-47c9-a80b-4c188f963e49/
SH256 hash:
fd898ae2d8b5e50c7b61c0f37d1e72210fc7c6c1c0b9421b0cc7672ad7eb7bb5
MD5 hash:
2182ad44af508ba0a68adc52cf0be0b9
SHA1 hash:
47772217a217b01ddebf693760ce0cb2831d41d0
Link:
https://www.unpac.me/results/c242546a-a378-47c9-a80b-4c188f963e49/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/fd898ae2d8b5/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/fd898ae2d8b5e50c7b61c0f37d1e72210fc7c6c1c0b9421b0cc7672ad7eb7bb5

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
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.

Malspam

RemcosRAT

Executable exe fd898ae2d8b5e50c7b61c0f37d1e72210fc7c6c1c0b9421b0cc7672ad7eb7bb5

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/225813/

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