MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500
SHA3-384 hash: 5c9a8b70858c321bcc6bbde74a75ed19a9923cb4145bf912db225e69497a3c2dce9d9d59b4ac86e11f28cf7661c432b8
SHA1 hash: 175ed8329daa2055e56fca5c5497cfdc90381330
MD5 hash: dd7fb30a4aeab3e250872876b9be85ec
humanhash: michigan-alanine-football-oxygen
File name:a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'385'472 bytes
First seen:2024-04-03 13:53:21 UTC
Last seen:2024-04-03 14:34:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 948cc502fe9226992dce9417f952fce3 (1'182 x CredentialFlusher, 446 x Formbook, 231 x AgentTesla)
ssdeep 24576:1qDEvCTbMWu7rQYlBQcBiT6rprG8arEj1:1TvC/MTQYxsWR7ar
TLSH T1F355D0027381C062FF9B92734B9AF7514BBC69260123E52F13981DB9BE705B1563E7A3
TrID 68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.5% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
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 :
2
# of downloads :
312
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500.exe
Verdict:
No threats detected
Analysis date:
2024-04-03 14:57:52 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e38ed9f8-7ec1-45e1-9539-d59ac7284481

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
Creating a file in the %temp% directory
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit fingerprint keylogger lolbin packed shell32
Link:
https://www.filescan.io/uploads/660d5f7feda31927461b28bb/reports/3fa78a7f-7bf3-4f5e-ab4f-c370b26357c1/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500
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/30f08482-0881-4311-8c91-f6d8edf5a4bf
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad.rans.phis.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1419505
Signature
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found API chain indicative of sandbox detection
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1419505 Sample: w0vFb4jHKs.exe Startdate: 03/04/2024 Architecture: WINDOWS Score: 100 68 Multi AV Scanner detection for domain / URL 2->68 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 9 other signatures 2->74 14 w0vFb4jHKs.exe 6 2->14         started        18 wscript.exe 1 2->18         started        process3 file4 66 C:\Users\user\AppData\Local\miaou\poufs.exe, PE32 14->66 dropped 96 Binary is likely a compiled AutoIt script file 14->96 98 Found API chain indicative of sandbox detection 14->98 20 poufs.exe 3 14->20         started        100 Windows Scripting host queries suspicious COM object (likely to drop second stage) 18->100 24 poufs.exe 2 18->24         started        signatures5 process6 file7 64 C:\Users\user\AppData\Roaming\...\poufs.vbs, data 20->64 dropped 80 Binary is likely a compiled AutoIt script file 20->80 82 Drops VBS files to the startup folder 20->82 84 Found API chain indicative of sandbox detection 20->84 26 poufs.exe 2 20->26         started        29 poufs.exe 2 24->29         started        signatures8 process9 signatures10 31 poufs.exe 2 26->31         started        90 Binary is likely a compiled AutoIt script file 29->90 34 poufs.exe 2 29->34         started        process11 signatures12 36 poufs.exe 2 31->36         started        102 Binary is likely a compiled AutoIt script file 34->102 39 poufs.exe 3 34->39         started        process13 signatures14 41 poufs.exe 2 36->41         started        78 Binary is likely a compiled AutoIt script file 39->78 44 poufs.exe 39->44         started        process15 signatures16 46 poufs.exe 2 41->46         started        88 Binary is likely a compiled AutoIt script file 44->88 49 poufs.exe 44->49         started        process17 signatures18 51 poufs.exe 2 46->51         started        94 Binary is likely a compiled AutoIt script file 49->94 54 poufs.exe 49->54         started        process19 signatures20 56 poufs.exe 2 51->56         started        76 Binary is likely a compiled AutoIt script file 54->76 59 poufs.exe 54->59         started        process21 signatures22 61 poufs.exe 2 56->61         started        86 Binary is likely a compiled AutoIt script file 59->86 process23 signatures24 92 Binary is likely a compiled AutoIt script file 61->92
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500/
Threat name:
Win32.Trojan.Strab
Create hunting rule
Status:
Suspicious
First seen:
2024-03-27 11:13:59 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uq2vyyn2x3pp7rfnvh4q2rvvyutiqkqzvymhofzty7qfcivimuaa._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240403-q7jg8aed23/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Unpacked files
SH256 hash:
8e9544745a9e84ab286e3076ef3716b89f703317736394950c9be81f84727967
MD5 hash:
4b749d6b8aba318a668cdafd7f315c60
SHA1 hash:
5b712a32010b275b6f43b907eda2ee75ffbfcbbc
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/1b9988f8-5cf5-4f5b-bf47-c3a9909e0148/
Parent samples :
d81731825aace0973b57c123b8a3a625181e30927e2cbd5b429dc8fcf5b7617c
013c86c9eb7691e645d32336f93e0374552ed3b1674bbf3f7217c765db3bfb51
1b5ba1755ed43689d38dd0ece8c01b5fa25a21a16834eb9ce13ce7d7da8d1982
a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500
f31a1a4253e9c3ba4ca22968b9f6f805984346464e10910bb8c3dfd84b028558
SH256 hash:
a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500
MD5 hash:
dd7fb30a4aeab3e250872876b9be85ec
SHA1 hash:
175ed8329daa2055e56fca5c5497cfdc90381330
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/1b9988f8-5cf5-4f5b-bf47-c3a9909e0148/
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/a4355c61babedeffc4ada9f90d46b5c526882a19ae18771733c7e05122a86500

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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)

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::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
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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