MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1. 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: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1
SHA3-384 hash: b1b3b2041a9bc00c40328e4407e13980366b83fcdd52cfd845db8cc630f8ed4430255bedb27cb72f3bd429eb71f296ed
SHA1 hash: 9bfec8f63dbc425e4c2d0e3b022cb27c7aa21a90
MD5 hash: 816edb96c263895c4016a31140b04ff0
humanhash: kitten-sink-montana-robin
File name:Waybill.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:865'792 bytes
First seen:2022-03-28 17:08:30 UTC
Last seen:2022-03-28 17:46:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e75c5003acd7e864dc3f6d27d565ffbb (2 x RemcosRAT)
ssdeep 24576:nQeAdfvmxCKnOwj4XIiKDyyeagCG+PdCLHO/s:nh6WsaU+PdCLo
Threatray 1'596 similar samples on MalwareBazaar
TLSH T1C7058E2DB7814477C1721A789C4BA3B9AE267F001D24F98B67F92D8C5E7A34078253E7
File icon (PE):PE icon
dhash icon 30808a8c8c8a8010 (4 x RemcosRAT, 4 x Formbook, 4 x DBatLoader)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
216
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/258689/
Detection(s):
SecuriteInfo.com.Scr.MalPbsgen1.17093.30739.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Scr.MalPbsgen1.11056.2626.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Creating a file
Launching a process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/11808/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/6241ebaf9253b276b791ebe7/reports/23def793-e5ce-4068-a1ae-07824e4c322b/overview
Result
Verdict:
SUSPICIOUS
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d22c2531-ca87-4919-9e15-3be77b876758
Result
Threat name:
DBatLoader Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/966050
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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: 598531 Sample: Waybill.exe Startdate: 28/03/2022 Architecture: WINDOWS Score: 100 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->65 67 7 other signatures 2->67 7 Pwzrzlj.exe 15 2->7         started        11 Waybill.exe 1 17 2->11         started        14 Pwzrzlj.exe 15 2->14         started        process3 dnsIp4 39 l-0004.dc-msedge.net 13.107.43.13, 443, 49778, 49780 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 7->39 41 zp7kuw.by.files.1drv.com 7->41 47 2 other IPs or domains 7->47 69 Multi AV Scanner detection for dropped file 7->69 71 Writes to foreign memory regions 7->71 73 Allocates memory in foreign processes 7->73 16 DpiScaling.exe 2 2 7->16         started        43 l-0003.dc-msedge.net 13.107.43.12, 443, 49763, 49771 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 11->43 45 zp7kuw.by.files.1drv.com 11->45 49 2 other IPs or domains 11->49 31 C:\Users\Public\Pwzrzlj.exe, PE32 11->31 dropped 33 C:\Users\Public\Pwzrzlj.exe:Zone.Identifier, ASCII 11->33 dropped 75 Drops PE files to the user root directory 11->75 77 Creates a thread in another existing process (thread injection) 11->77 79 Injects a PE file into a foreign processes 11->79 20 logagent.exe 11->20         started        51 3 other IPs or domains 14->51 22 logagent.exe 14->22         started        file5 signatures6 process7 dnsIp8 35 flexyval01.hopto.org 20.110.197.26, 2404, 49788, 49789 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 16->35 37 192.168.2.1 unknown unknown 16->37 53 Contains functionality to steal Chrome passwords or cookies 16->53 55 Contains functionality to inject code into remote processes 16->55 57 Contains functionality to steal Firefox passwords or cookies 16->57 59 2 other signatures 16->59 24 DpiScaling.exe 1 16->24         started        27 DpiScaling.exe 2 16->27         started        29 DpiScaling.exe 1 16->29         started        signatures9 process10 signatures11 81 Tries to steal Instant Messenger accounts or passwords 24->81 83 Tries to steal Mail credentials (via file / registry access) 24->83 85 Tries to harvest and steal browser information (history, passwords, etc) 27->85
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-03-28 17:09:09 UTC
File Type:
PE (Exe)
Extracted files:
45
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=u5qzusbkwlbtz743xg5tsctu4ymvplygy4jxjviakvwu5w2n5kyq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
566804eeaa9725faf35958d6bd0c12ec0715950881d260b6815618fc399f74c5
RemcosRAT
6a4b5aab71a352d6ae6140f99a28b0c38df78a8985b3383f1bc424ca74e046fe
RemcosRAT
83a1ca1bc7363633b8e514a8c2b79ff0e223fc578b0a20e4e088a3daf5424a61
RemcosRAT
8dfee94c273148e304ce65b2174c1bcf211e31b9fb7074bb03069c831a4b119a
RemcosRAT
a02d52f23eb9e8a857c9ed01d81e6220e787a1e2838d42c2734e99bc73cff250
RemcosRAT
a1e618daaaa3133d466df43f3b43ff6b095deb8d2c010f5e35e592800eebc87b
RemcosRAT
a3792b703dde1aa5a935183c6696ce91cdea54579e9045b55848df91e6b312f9
RemcosRAT
db5a12184d9b6acdf484a88b3e65aa9435f8a9d7eda48418aef2d028b98913d4
RemcosRAT
+ 1'586 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat
Link:
https://tria.ge/reports/220328-vn4q9sgfer/
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/a8e5e281-f362-4285-a4f7-5be7b4a44ffa/
Parent samples :
4ce893ef0bd7abeb769c3c3e57863700f41882befbee770733f0da86e015e7cb
a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1
SH256 hash:
a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1
MD5 hash:
816edb96c263895c4016a31140b04ff0
SHA1 hash:
9bfec8f63dbc425e4c2d0e3b022cb27c7aa21a90
Link:
https://www.unpac.me/results/a8e5e281-f362-4285-a4f7-5be7b4a44ffa/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a7619a482ab2/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/a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1

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
Create hunting rule

File information

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

Malspam

RemcosRAT

Executable exe a7619a482ab2c33cff9bb9bb390a74e61957af06c71374d500556d4edb4deab1

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/258689/

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