MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb
SHA3-384 hash: a2904829b3d432d1d07f1b5bde33823ba353e00fe800fab7e8d93a7e111f57dbf839467b52bd9e41687b983a962545ff
SHA1 hash: 049e06c3cc0adb6819cca90d371d00b1d0b8ce74
MD5 hash: c117fc510ec6063462aa104278f9f476
humanhash: fillet-autumn-quebec-fish
File name:Waybill.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:865'792 bytes
First seen:2022-03-28 13:45:15 UTC
Last seen:2022-03-28 15:04:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e75c5003acd7e864dc3f6d27d565ffbb (2 x RemcosRAT)
ssdeep 24576:nQeAdfvmxCKnOwj4XIiKDyyeagCGVPdCLHO/s:nh6WsaUVPdCLo
TLSH T103058F2EB3919477C1731A748D5BA379E926BE002E14B94B67FD2C8C9F7A34074252E3
File icon (PE):PE icon
dhash icon 30808a8c8c8a8010 (4 x RemcosRAT, 4 x Formbook, 4 x DBatLoader)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
239
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/258648/
Detection(s):
SecuriteInfo.com.Scr.MalPbsgen1.11056.2626.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Creating a file
Launching a process
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Creating a file in the %temp% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/11797/overview
Behaviour
MalwareBazaar
CheckScreenResolution
CheckCmdLine
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe greyware keylogger replace.exe
Link:
https://www.filescan.io/uploads/6241bc1ca19c6494129fb305/reports/d4cdfca2-8b6e-46c6-9c39-60b9fdb417df/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.
Malware family:
REMCOS
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/08e0ae98-78e4-4350-ac01-afbe6d8a7151
Result
Threat name:
DBatLoader Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965888
Signature
Allocates memory in foreign processes
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 a thread in another existing process (thread injection)
Delayed program exit found
Drops PE files to the user root directory
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Suspicious Program Location with Network Connections
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 598369 Sample: Waybill.exe Startdate: 28/03/2022 Architecture: WINDOWS Score: 100 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->66 68 7 other signatures 2->68 7 Waybill.exe 1 17 2->7         started        12 Uljuswr.exe 15 2->12         started        14 Uljuswr.exe 15 2->14         started        process3 dnsIp4 38 zp4txg.by.files.1drv.com 7->38 46 2 other IPs or domains 7->46 32 C:\Users\Public\Uljuswr.exe, PE32 7->32 dropped 34 C:\Users\Public\Uljuswr.exe:Zone.Identifier, ASCII 7->34 dropped 76 Drops PE files to the user root directory 7->76 78 Writes to foreign memory regions 7->78 80 Allocates memory in foreign processes 7->80 16 logagent.exe 2 2 7->16         started        40 l-0004.dc-msedge.net 13.107.43.13, 443, 49795, 49798 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 12->40 42 zp4txg.by.files.1drv.com 12->42 48 2 other IPs or domains 12->48 82 Creates a thread in another existing process (thread injection) 12->82 84 Injects a PE file into a foreign processes 12->84 20 DpiScaling.exe 12->20         started        44 zp4txg.by.files.1drv.com 14->44 50 2 other IPs or domains 14->50 22 logagent.exe 14->22         started        file5 signatures6 process7 dnsIp8 36 flexyval01.hopto.org 20.110.197.26, 2404, 49790, 49791 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 16->36 54 Contains functionality to steal Chrome passwords or cookies 16->54 56 Contains functionality to inject code into remote processes 16->56 58 Contains functionality to steal Firefox passwords or cookies 16->58 60 2 other signatures 16->60 24 logagent.exe 1 16->24         started        27 logagent.exe 2 16->27         started        30 logagent.exe 1 16->30         started        signatures9 process10 dnsIp11 70 Tries to steal Instant Messenger accounts or passwords 24->70 72 Tries to steal Mail credentials (via file / registry access) 24->72 52 192.168.2.1 unknown unknown 27->52 74 Tries to harvest and steal browser information (history, passwords, etc) 27->74 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-03-28 14:18:16 UTC
File Type:
PE (Exe)
Extracted files:
45
AV detection:
9 of 42 (21.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jtujh3yl26v6w5u4hq7fpbrxad2brav67pxhobzt6dninyav47fq._file
Verdict:
malicious
Label(s):
remcos
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Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat
Link:
https://tria.ge/reports/220328-q2zx1saee7/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
flexyval01.hopto.org:2404
flexyval02.hopto.org:2404
flexyval03.hopto.org:2404
flexyval04.hopto.org:2404
flexyval06.hopto.org:2404
flexyval05.hopto.org:2404
flexyval07.hopto.org:2404
Unpacked files
SH256 hash:
a59508ab365069c7d134a2a0ce9e968720448a17e67e086e7b01d7d778a5725c
MD5 hash:
de00705d2fc02185de5edfa642587efb
SHA1 hash:
04237a5afe3d6052fb5010841c1e09d6596f0be3
Detections:
win_dbatloader_w0
Create hunting rule
Link:
https://www.unpac.me/results/875c6d85-4137-4c2a-936a-7c0bb437015d/
Parent samples :
4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb
a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1
SH256 hash:
4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb
MD5 hash:
c117fc510ec6063462aa104278f9f476
SHA1 hash:
049e06c3cc0adb6819cca90d371d00b1d0b8ce74
Link:
https://www.unpac.me/results/875c6d85-4137-4c2a-936a-7c0bb437015d/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4ce893ef0bd7/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/4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb

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:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
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_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
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File information

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

Malspam

RemcosRAT

Executable exe 4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/258648/

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