MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd. 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: 17


Intelligence 17 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd
SHA3-384 hash: 1fdf9d7d48b46e1150628399cd18504eb37f51dfb41b6aede5f67c63091b605698a5f249bdfe1bae9ffa1c8c65d6e757
SHA1 hash: cfa7d409af396dac7191a7e89a4d961d80d67a71
MD5 hash: d3c8890f10db77738d3ae7e7abc00126
humanhash: fourteen-montana-lemon-wyoming
File name:Air Waybill no 6979374150.jpg.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'338'880 bytes
First seen:2025-04-02 07:49:50 UTC
Last seen:2025-04-07 07:38:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:pu6J33O0c+JY5UZ+XC0kGso6FaAK4kFAoXYG/hC8fgFWY:Lu0c++OCvkGs9FaAK4oAmYG88JY
Threatray 246 similar samples on MalwareBazaar
TLSH T1A755DF2263DDC360CB769173BF2AB7016EBB7C614630B85B2F980D7DA950171262D7A3
TrID 32.2% (.EXE) Win64 Executable (generic) (10522/11/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
72
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/82/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.vh.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ecef45cfd0a37f830c2555
Tags:
autorun autoit remcos emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Connection attempt
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script fingerprint keylogger masquerade microsoft_visual_cc packed packed packer_detected remcos
Link:
https://www.filescan.io/uploads/67ecec4df274bf2d8e2de47f/reports/664a9105-9840-4a5e-89d6-6a5e006afdf1/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/55136e5e-a79a-49e1-ba1b-3af23d6f928e
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1654393
Signature
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Detected Remcos RAT
Drops VBS files to the startup folder
Found malware configuration
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Uses an obfuscated file name to hide its real file extension (double extension)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1654393 Sample: Air Waybill no 6979374150.jpg.exe Startdate: 02/04/2025 Architecture: WINDOWS Score: 100 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 10 other signatures 2->58 9 Air Waybill no 6979374150.jpg.exe 4 2->9         started        13 wscript.exe 1 2->13         started        process3 file4 34 C:\Users\user\AppData\...\jailkeeper.exe, PE32 9->34 dropped 76 Binary is likely a compiled AutoIt script file 9->76 15 jailkeeper.exe 2 9->15         started        78 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->78 19 jailkeeper.exe 1 13->19         started        signatures5 process6 file7 36 C:\Users\user\AppData\...\jailkeeper.vbs, data 15->36 dropped 40 Multi AV Scanner detection for dropped file 15->40 42 Binary is likely a compiled AutoIt script file 15->42 44 Drops VBS files to the startup folder 15->44 46 Switches to a custom stack to bypass stack traces 15->46 21 jailkeeper.exe 1 15->21         started        24 svchost.exe 15->24         started        48 Writes to foreign memory regions 19->48 50 Maps a DLL or memory area into another process 19->50 26 svchost.exe 19->26         started        signatures8 process9 signatures10 60 Binary is likely a compiled AutoIt script file 21->60 62 Writes to foreign memory regions 21->62 64 Maps a DLL or memory area into another process 21->64 28 svchost.exe 4 1 21->28         started        66 Contains functionality to bypass UAC (CMSTPLUA) 24->66 68 Contains functionalty to change the wallpaper 24->68 70 Contains functionality to steal Chrome passwords or cookies 24->70 74 2 other signatures 24->74 72 Detected Remcos RAT 26->72 process11 dnsIp12 38 23.175.50.77, 49713, 49717, 49719 NEUSTYLECA Reserved 28->38 80 System process connects to network (likely due to code injection or exploit) 28->80 82 Detected Remcos RAT 28->82 32 conhost.exe 28->32         started        signatures13 process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-04-02 07:50:33 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lafyzn4cx2nyebz7axpwafewsjcmrvsz6je3q5zal5btdssqwdoq._file
Verdict:
malicious
Label(s):
unc_loader_036
Create hunting rule
remcos
Create hunting rule
Similar samples:
3fa271144c7a9185fdb82951db8a4aa94c38e94e1dbdcbe6e00f2e18591387f5
RemcosRAT
7e40808321b27f4f1efe0972adc667ff4bd65c1ea4291dfae2925d3e222351e3
RemcosRAT
ce2fbb9b7200bc539e8f206f3a04426a72b88deeb1ea36d73ce896bdd1b342a4
RemcosRAT
dbffd5f06f2ccb9ad414b070621591dfa2cc7c181f164371ebaf6d5a75f2f546
RemcosRAT
error
RemcosRAT
+ 236 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery rat
Link:
https://tria.ge/reports/250402-jph1eatsht/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Remcos
Remcos family
Malware Config
C2 Extraction:
23.175.50.77:5568
Verdict:
Malicious
Tags:
trojan remcos
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/f059a6b1-0524-400e-a063-68711450f846
Unpacked files
SH256 hash:
580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd
MD5 hash:
d3c8890f10db77738d3ae7e7abc00126
SHA1 hash:
cfa7d409af396dac7191a7e89a4d961d80d67a71
Link:
https://www.unpac.me/results/ed6b3c1e-c65e-4710-93a5-1b43aca684e6/
SH256 hash:
7a2a393c48ed329c881fac43069622d83fad0c8bcde5a27a118a8dc8218084da
MD5 hash:
1702b8cf2708c5a4d29c346d70a25d09
SHA1 hash:
af073c4b2c10c3ee7aa3f7a7b53e6d7842b724ee
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/ed6b3c1e-c65e-4710-93a5-1b43aca684e6/
Parent samples :
580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd
26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714
074efb70a49088638d0e62cc3637a75627afe9286c3f2d024e78ea9f247582fe
278854f2430457153ca438c78d14f2469083281da9ec3baebad93d4dd7a3c125
07a74041ab09d6e30042a163e518da8c70f644924d576a268c981baad87a19ae
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/580b8cb782be/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/580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Malspam

RemcosRAT

Executable exe 580b8cb782be9b82073f05df6014969244c8d659f249b877205f4331ca50b0dd

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/82/

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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