MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601. 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 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601
SHA3-384 hash: 795ef833d3c315e71a8355943b8923e8b1738fdd0595ea442b483eb245cfd38aa060164b25d9b591bf76ed67cf9e23e8
SHA1 hash: 5041ecbc5713db1de2284a93981322c9d108b817
MD5 hash: 005a7ca88eafea446db3ce376d33354f
humanhash: charlie-mobile-twenty-failed
File name:REM6789098756GHUITR.bat.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'354'752 bytes
First seen:2024-06-12 07:55:32 UTC
Last seen:2024-06-12 08:29:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:6AHnh+eWsN3skA4RV1Hom2KXMmHazWtL2kDMQop1/4KvU5st4SQsAUcr34/5:Nh+ZkldoPK8YazQsp+sUaxQ5Uj
TLSH T1F455CE0273D1C036FFABA2739B6AF24556BC79254123852F13981DB9BD701B2273E663
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10523/12/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
107.175.229.139:8823

Intelligence

File Origin
# of uploads :
2
# of downloads :
442
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601.exe
Verdict:
Malicious activity
Analysis date:
2024-06-12 07:58:29 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7cc8f793-ef5f-4192-a279-35c1ee4c04fd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalware.12271.29394.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666954afda262547655eb1a7win7simulatehigh_evasion
Tags:
Encryption Execution Generic Network Stealth Inject
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
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Connection attempt to an infection source
Sending a TCP request to an infection source
Forced shutdown of a system process
Stealing user critical data
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit epmicrosoft_visual_cc fingerprint keylogger lolbin masquerade microsoft_visual_cc packed shell32
Link:
https://www.filescan.io/uploads/66695493ef9fdf64aa6a591b/reports/fa2b003a-642a-419a-92b3-52f95cd9a6c4/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9cafbadd-8be1-4cc3-a160-05b2b9da9a23
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1455856
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Delayed program exit found
Detected Remcos RAT
Drops VBS files to the startup folder
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for 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
Snort IDS alert for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
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)
Tries to steal Mail credentials (via file registry)
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
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1455856 Sample: REM6789098756GHUITR.bat.exe Startdate: 12/06/2024 Architecture: WINDOWS Score: 100 43 geoplugin.net 2->43 61 Snort IDS alert for network traffic 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 11 other signatures 2->67 9 REM6789098756GHUITR.bat.exe 6 2->9         started        13 wscript.exe 1 2->13         started        signatures3 process4 file5 39 C:\Users\user\AppData\Local\...\toggeries.exe, PE32 9->39 dropped 77 Binary is likely a compiled AutoIt script file 9->77 15 toggeries.exe 3 9->15         started        79 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->79 19 toggeries.exe 2 13->19         started        signatures6 process7 file8 41 C:\Users\user\AppData\...\toggeries.vbs, data 15->41 dropped 49 Multi AV Scanner detection for dropped file 15->49 51 Binary is likely a compiled AutoIt script file 15->51 53 Machine Learning detection for dropped file 15->53 59 2 other signatures 15->59 21 svchost.exe 3 15 15->21         started        55 Writes to foreign memory regions 19->55 57 Maps a DLL or memory area into another process 19->57 26 svchost.exe 19->26         started        signatures9 process10 dnsIp11 45 geoplugin.net 178.237.33.50, 49707, 80 ATOM86-ASATOM86NL Netherlands 21->45 47 107.175.229.139, 49705, 49706, 8823 AS-COLOCROSSINGUS United States 21->47 37 C:\ProgramData\remcos\logs.dat, data 21->37 dropped 69 System process connects to network (likely due to code injection or exploit) 21->69 71 Contains functionality to bypass UAC (CMSTPLUA) 21->71 73 Detected Remcos RAT 21->73 75 9 other signatures 21->75 28 svchost.exe 1 21->28         started        31 svchost.exe 1 21->31         started        33 svchost.exe 2 21->33         started        35 6 other processes 21->35 file12 signatures13 process14 signatures15 81 Tries to steal Instant Messenger accounts or passwords 28->81 83 Tries to steal Mail credentials (via file / registry access) 28->83 85 Tries to harvest and steal browser information (history, passwords, etc) 31->85
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-06-12 07:56:09 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wj2lfns7l3bsk3xjm5x2za4av4oeorlva7ut2w3ukflpfhzymyaq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat
Link:
https://tria.ge/reports/240612-jsn1tsvflm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
AutoIT Executable
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
Executes dropped EXE
Loads dropped DLL
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8823
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9c98f3e0-065a-4c02-af4e-496799078b1d
Unpacked files
SH256 hash:
93c8b381f044e1ac1d133f49114b5777da366de1f67956feb00ae8f21e80122d
MD5 hash:
f818296d5fd7df66b36f2e6148365dd0
SHA1 hash:
690d6ca628b859f51775bd59834cca167001fe46
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/b21445e9-3e6e-4673-9b81-16137412cd21/
Parent samples :
b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601
e6643fb9224f9a2ce99cf20b5714e5322645fae8046ef9d439ca17d7ac6abd45
79c7358a9ac82f4d547e027ec64b8a9854ef445ff7d1e85a2b39c0e60bc00c99
74eff35aee68f271e0a9882e41d44abf8f82d058ee4755ddd0832bdc674c520b
497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa
1f75782173ef3b1b68650a95b7846bb35faa400d53b52fc1ad8b65a86bc72c88
66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490
SH256 hash:
b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601
MD5 hash:
005a7ca88eafea446db3ce376d33354f
SHA1 hash:
5041ecbc5713db1de2284a93981322c9d108b817
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/b21445e9-3e6e-4673-9b81-16137412cd21/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
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_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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:TeslaCryptPackedMalware
Create hunting rule
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_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.

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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