MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd. 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: 16


Intelligence 16 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd
SHA3-384 hash: 083731e573c4abc2f6de8cec9e9d8420e06357d59931057bb3bccbfb778179d88288835feb8fd62d4df225f233460e21
SHA1 hash: 90261a576d121fb94fa83e47316fc9a7f6376546
MD5 hash: 508844ec54f56fe9155db3b482a56a34
humanhash: one-nine-california-pasta
File name:508844ec54f56fe9155db3b482a56a34.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'258'264 bytes
First seen:2024-04-03 15:57:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 12e12319f1029ec4f8fcbed7e82df162 (389 x DCRat, 52 x RedLineStealer, 51 x Formbook)
ssdeep 24576:3TbBv5rUDOs6aEYajgS7A9X4TFR7hwcuHfHfFGa6mPcyGJzQfs8FibyX1AS:RBVaEYaj+STFRhwPHsoGBQfo8x
TLSH T15D451202BAC1A073C5B21C325EA66B21BA3D79201F718EDF63D4562DDE725D0D731BA2
TrID 89.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.5% (.EXE) Win64 Executable (generic) (10523/12/4)
2.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon fab0a0a1b1d8f870 (2 x Rhadamanthys, 2 x RemcosRAT, 1 x Stealc)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
402
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd.exe
Verdict:
Malicious activity
Analysis date:
2024-04-03 16:03:24 UTC
Tags:
remote rat remcos
Link:
https://app.any.run/tasks/a7a9907b-671f-40b2-8cbe-64b565dfb090

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a UDP request
Creating a file
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint installer keylogger lolbin overlay packed setupapi sfx shdocvw shell32
Link:
https://www.filescan.io/uploads/660d7c8e391c61c4791495b0/reports/323d8f3d-a904-43e4-8106-7fb6afc602d6/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/24964fbf-46e1-4d86-9305-65638b620fad
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1419623
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Found API chain indicative of sandbox detection
Found malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses ipconfig to lookup or modify the Windows network settings
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected Autoit Injector
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1419623 Sample: PAscChbUto.exe Startdate: 03/04/2024 Architecture: WINDOWS Score: 100 68 windowsnewzzexplorerszzo.duckdns.org 2->68 70 geoplugin.net 2->70 76 Found malware configuration 2->76 78 Malicious sample detected (through community Yara rule) 2->78 80 Antivirus detection for URL or domain 2->80 84 11 other signatures 2->84 10 PAscChbUto.exe 3 34 2->10         started        13 jfhiovfvoh.mp3.exe 1 2->13         started        16 jfhiovfvoh.mp3.exe 2->16         started        18 jfhiovfvoh.mp3.exe 2->18         started        signatures3 82 Uses dynamic DNS services 68->82 process4 file5 62 C:\Users\user\AppData\...\jfhiovfvoh.mp3, PE32 10->62 dropped 64 C:\Users\user\AppData\Local\...\sbkjbl.exe, data 10->64 dropped 66 C:\Users\user\AppData\Local\Temp\...\bmou.vbe, Unicode 10->66 dropped 20 wscript.exe 1 10->20         started        104 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 13->104 106 Writes to foreign memory regions 13->106 108 Allocates memory in foreign processes 13->108 23 RegSvcs.exe 13->23         started        110 Injects a PE file into a foreign processes 16->110 25 RegSvcs.exe 16->25         started        27 RegSvcs.exe 18->27         started        signatures6 process7 signatures8 94 Windows Scripting host queries suspicious COM object (likely to drop second stage) 20->94 29 cmd.exe 1 20->29         started        31 cmd.exe 1 20->31         started        34 cmd.exe 1 20->34         started        process9 signatures10 36 jfhiovfvoh.mp3 1 32 29->36         started        40 conhost.exe 29->40         started        112 Uses ipconfig to lookup or modify the Windows network settings 31->112 42 conhost.exe 31->42         started        44 ipconfig.exe 1 31->44         started        46 conhost.exe 34->46         started        48 ipconfig.exe 1 34->48         started        process11 file12 54 C:\Users\user\negm\jfhiovfvoh.mp3.exe, PE32 36->54 dropped 56 C:\Users\user\negm\jfhiovfvoh.mp3, PE32 36->56 dropped 58 C:\Users\user\AppData\...\jfhiovfvoh.mp3.exe, PE32 36->58 dropped 60 2 other files (1 malicious) 36->60 dropped 96 Found API chain indicative of sandbox detection 36->96 98 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 36->98 100 Writes to foreign memory regions 36->100 102 2 other signatures 36->102 50 RegSvcs.exe 2 13 36->50         started        signatures13 process14 dnsIp15 72 windowsnewzzexplorerszzo.duckdns.org 162.251.122.110, 49718, 5220 UNREAL-SERVERSUS Canada 50->72 74 geoplugin.net 178.237.33.50, 49719, 80 ATOM86-ASATOM86NL Netherlands 50->74 86 Contains functionalty to change the wallpaper 50->86 88 Contains functionality to register a low level keyboard hook 50->88 90 Contains functionality to steal Firefox passwords or cookies 50->90 92 Delayed program exit found 50->92 signatures16
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-03-30 13:27:00 UTC
File Type:
PE (Exe)
Extracted files:
83
AV detection:
20 of 38 (52.63%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z5hworyqqm4k7md7e674raeucak3pr24wf2zg4flsqrft4t2xtoq._file
Verdict:
malicious
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:65456 persistence rat
Link:
https://tria.ge/reports/240403-teg1gafc8y/
Behaviour
Gathers network information
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
windowsnewzzexplorerszzo.duckdns.org:5220
Unpacked files
SH256 hash:
3fce07bd7e220e97a1b141da155444f95aba7b5e4325f6a5edb262c025c1e5a9
MD5 hash:
eeaa0f5d82e56659c80fa84d588bf870
SHA1 hash:
a1aea1de9c42e1ef8c186ef6246dd318040e66de
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/1d4a7545-e26e-43bf-97f1-8ecfa33ac9de/
Parent samples :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 hash:
cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd
MD5 hash:
508844ec54f56fe9155db3b482a56a34
SHA1 hash:
90261a576d121fb94fa83e47316fc9a7f6376546
Link:
https://www.unpac.me/results/1d4a7545-e26e-43bf-97f1-8ecfa33ac9de/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cf4f67471083/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/cf4f6747108338afb07f27bfc880941015b7c75cb1759370ab942259f27abcdd

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants

File information

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

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdiplusShutdown
gdiplus.dll::GdipAlloc
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::AttachConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW

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