MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b
SHA3-384 hash: 5da5ca01fd30bd4ae3e7ff7bab4b438aa132e8dd8eafcf94449132c38036120fe269fb0b43b011b4f57649e37e81a49a
SHA1 hash: 437ffa69c17cdc95eb9bfd16956f8b7e488b1bd3
MD5 hash: b7ce92fb5b9c592399a57e3309222ef0
humanhash: mountain-purple-maine-jersey
File name:BANK_LETTETR.PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'685'504 bytes
First seen:2024-07-16 19:19:50 UTC
Last seen:2024-07-24 19:38:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c89d3202415aaf9c8f0452bb97146f27 (5 x RemcosRAT, 1 x AveMariaRAT)
ssdeep 24576:tHb5Bli50xv2T4EM9X0cjRjFmhco/ZyFvaZjeCi8DI/fdKFZAd6GSbxpSA07YN3t:Fb5W+uWRhKV4FceCxyKFZ
Threatray 26 similar samples on MalwareBazaar
TLSH T1E4758B20F1F01932D25329FD8C26EA6DD3167B3A6918D681BAECF9496A3B1C03457DC7
TrID 36.1% (.SCR) Windows screen saver (13097/50/3)
29.0% (.EXE) Win64 Executable (generic) (10523/12/4)
12.4% (.EXE) Win32 Executable (generic) (4504/4/1)
5.7% (.EXE) Win16/32 Executable Delphi generic (2072/23)
5.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d8dcded6c6a2a2c8 (5 x RemcosRAT, 1 x AveMariaRAT)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
437
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.DropperX-gen.1563.31587.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6696c7ea2c29bed579a4825ewin7simulatehigh_evasion
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Creating a process from a recently created file
Creating a file in the %temp% subdirectories
Running batch commands
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching a tool to kill processes
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
borland_delphi explorer fingerprint keylogger lolbin masquerade
Link:
https://www.filescan.io/uploads/6696c9c6cbb32227b6a801c9/reports/f2a21f8a-de07-4827-9674-a2fc2a6661b6/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/73946f96-4fb2-4147-b113-34fb695fb6d2
Result
Threat name:
Remcos, DBatLoader
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1474435
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
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 bypass UAC (CMSTPLUA)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to detect sleep reduction / modifications
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
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
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Drops executables to the windows directory (C:\Windows) and starts them
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
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)
Maps a DLL or memory area into another process
Opens network shares
Powershell is started from unusual location (likely to bypass HIPS)
Reads the Security eventlog
Reads the System eventlog
Sample uses process hollowing technique
Sigma detected: Execution from Suspicious Folder
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Parent in Public Folder Suspicious Process
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Creation with Colorcpl
Sigma detected: Suspicious Double Extension File Execution
Sigma detected: TrustedPath UAC Bypass Pattern
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)
UAC bypass detected (Fodhelper)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1474435 Sample: BANK_LETTETR.PDF.exe Startdate: 16/07/2024 Architecture: WINDOWS Score: 100 89 latestgrace2024.duckdns.org 2->89 91 2010.filemail.com 2->91 93 2 other IPs or domains 2->93 115 Found malware configuration 2->115 117 Malicious sample detected (through community Yara rule) 2->117 119 Antivirus / Scanner detection for submitted sample 2->119 123 16 other signatures 2->123 12 BANK_LETTETR.PDF.exe 1 4 2->12         started        17 Ydhcnowa.PIF 2->17         started        19 SystemSettingsAdminFlows.exe 2->19         started        signatures3 121 Uses dynamic DNS services 89->121 process4 dnsIp5 101 ip.2010.filemail.com 50.7.82.90, 443, 49700, 49701 COGENT-174US United States 12->101 81 C:\Users\Public\Libraries\awonchdY.pif, PE32 12->81 dropped 83 C:\Users\Public\Ydhcnowa.url, MS 12->83 dropped 85 C:\Users\Public\Libraries\Ydhcnowa, data 12->85 dropped 157 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 12->157 159 Drops PE files with a suspicious file extension 12->159 161 Writes to foreign memory regions 12->161 169 4 other signatures 12->169 21 awonchdY.pif 8 12->21         started        25 colorcpl.exe 5 16 12->25         started        28 extrac32.exe 1 12->28         started        163 Antivirus detection for dropped file 17->163 165 Allocates memory in foreign processes 17->165 167 Creates a thread in another existing process (thread injection) 17->167 30 SndVol.exe 17->30         started        file6 signatures7 process8 dnsIp9 69 C:\Users\user\AppData\Local\Temp\...\5CD4.bat, ASCII 21->69 dropped 133 Detected unpacking (changes PE section rights) 21->133 32 cmd.exe 1 21->32         started        95 latestgrace2024.duckdns.org 103.198.26.130, 49704, 49705, 56765 NXGNET-AS-APNextgenNetworksAU unknown 25->95 97 127.0.0.1 unknown unknown 25->97 99 geoplugin.net 178.237.33.50, 49706, 80 ATOM86-ASATOM86NL Netherlands 25->99 71 C:\ProgramData\remcos\logs.dat, data 25->71 dropped 135 Contains functionality to bypass UAC (CMSTPLUA) 25->135 137 Detected Remcos RAT 25->137 139 Contains functionalty to change the wallpaper 25->139 143 6 other signatures 25->143 35 colorcpl.exe 25->35         started        37 colorcpl.exe 25->37         started        39 colorcpl.exe 25->39         started        73 C:\Users\Public\Libraries\Ydhcnowa.PIF, PE32 28->73 dropped 141 Drops PE files with a suspicious file extension 28->141 file10 signatures11 process12 signatures13 103 Drops executables to the windows directory (C:\Windows) and starts them 32->103 105 Adds a directory exclusion to Windows Defender 32->105 41 alpha.exe 32->41         started        44 alpha.exe 2 32->44         started        46 extrac32.exe 1 32->46         started        49 13 other processes 32->49 107 Tries to steal Instant Messenger accounts or passwords 35->107 109 Tries to steal Mail credentials (via file / registry access) 35->109 111 Tries to harvest and steal browser information (history, passwords, etc) 37->111 process14 file15 145 Adds a directory exclusion to Windows Defender 41->145 51 xkn.exe 41->51         started        147 Uses ping.exe to sleep 44->147 149 Uses ping.exe to check the status of other devices and networks 44->149 87 C:\Users\Public\alpha.exe, PE32+ 46->87 dropped 151 Drops PE files to the user root directory 46->151 153 Drops or copies cmd.exe with a different name (likely to bypass HIPS) 46->153 155 Opens network shares 49->155 54 extrac32.exe 1 49->54         started        57 extrac32.exe 1 49->57         started        59 extrac32.exe 49->59         started        61 2 other processes 49->61 signatures16 process17 file18 125 Powershell is started from unusual location (likely to bypass HIPS) 51->125 127 Adds a directory exclusion to Windows Defender 51->127 129 Reads the Security eventlog 51->129 131 Reads the System eventlog 51->131 63 alpha.exe 51->63         started        75 C:\Users\Public\ger.exe, PE32+ 54->75 dropped 77 C:\Users\Public\xkn.exe, PE32+ 57->77 dropped 79 C:\Windows \System32\per.exe, PE32+ 59->79 dropped signatures19 process20 signatures21 171 Adds a directory exclusion to Windows Defender 63->171 66 ger.exe 63->66         started        process22 signatures23 113 UAC bypass detected (Fodhelper) 66->113
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2024-07-16 19:20:15 UTC
File Type:
PE (Exe)
Extracted files:
44
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tuncjhvfuo4rn6zcq2frma6zvtx6sevpyrzigd5aos5ioo2vownq._file
Verdict:
malicious
Similar samples:
03d482316053c32d1019fef5c195ef5598fa227f71702339f55146cc36863f0a
RemcosRAT
7ee8fe295d599091322ede91d069448210d858a52485835e327d14eaad1474d3
RemcosRAT
9be23cec2c892e93c64b478ec1fc7b078ddf5217c99b6d03069a425eb14d62ee
RemcosRAT
f09b8755616e69d30596c61482609b77b102394c7da3cd4b50fa9b8a1c2f117c
RemcosRAT
f2df2225b522198984f1c38654f2d06f2855a0efc8c57d87f566ea21e5c68cab
RemcosRAT
+ 16 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/240716-x132lswdpl/
Behaviour
Kills process with taskkill
Modifies registry class
Modifies system certificate store
Runs ping.exe
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
127.0.0.1:45645
127.0.0.1:56765
latestgrace2024.duckdns.org:56765
latestgrace2024.duckdns.org:45645
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4016af27-9174-4a20-8419-d208af0faeac
Unpacked files
SH256 hash:
9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b
MD5 hash:
b7ce92fb5b9c592399a57e3309222ef0
SHA1 hash:
437ffa69c17cdc95eb9bfd16956f8b7e488b1bd3
Link:
https://www.unpac.me/results/53feca85-40d8-43a1-86c7-11e753cd7e2b/
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/9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Borland
Create hunting rule
Author:malware-lu
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

RemcosRAT

Executable exe 9d1a249ea5a3b916fb22868b1603d9acefe912afc472830fa074ba873b55759b

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryExA
kernel32.dll::LoadLibraryA
kernel32.dll::GetStartupInfoA
kernel32.dll::GetDiskFreeSpaceA
kernel32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WinExec
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileA
kernel32.dll::FindFirstFileA
version.dll::GetFileVersionInfoSizeA
version.dll::GetFileVersionInfoA
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyExA
advapi32.dll::RegQueryValueExA
WIN_USER_APIPerforms GUI Actionsuser32.dll::ActivateKeyboardLayout
user32.dll::CreateMenu
user32.dll::FindWindowA
user32.dll::PeekMessageA
user32.dll::PeekMessageW
user32.dll::CreateWindowExA

Comments