MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b. 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: 18


Intelligence 18 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b
SHA3-384 hash: 29d6921d3ef538bd59ef0c2ce8127177785315a4a3a64383ed1c9c373f8aa626d26dc7daa58400e9a10a356439238ffc
SHA1 hash: 6157ff7dd30faa8a06b53db7c5a7f204041550ff
MD5 hash: 401385fe13c9dd61ef5fa9ac9bb823f8
humanhash: quiet-delaware-steak-robert
File name:xkbypgnZWk4P.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:480'768 bytes
First seen:2024-06-08 15:49:25 UTC
Last seen:2024-06-20 18:54:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 5d354883fe6f15fcf48045037a99fb7a (118 x RemcosRAT)
ssdeep 12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSRn9:uiLJbpI7I2WhQqZ7R9
TLSH T127A4AE02BAD2C072D57161344D2AE735DABDBD202835997BB3E61D5BFD30180A73A7B2
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
File icon (PE):PE icon
dhash icon c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter pmelson
Tags:exe remcos RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
369
Origin country :
US US
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b.exe
Verdict:
Malicious activity
Analysis date:
2024-06-08 15:51:35 UTC
Tags:
rat remcos remote keylogger evasion
Link:
https://app.any.run/tasks/bab7f4db-98a3-49d3-9611-230486439f22

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Win.Trojan.Remcos-10002580-0
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Connecting to a non-recommended domain
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
crypto epmicrosoft_visual_cc evasive eventvwr fingerprint fingerprint keylogger lolbin microsoft_visual_cc remcos shell32
Link:
https://www.filescan.io/uploads/66647dadf49c41a31f13137d/reports/7ae6604b-5854-459a-a585-7d8fda9c1c76/overview
Verdict:
Malicious
Labled as:
Dacic.A9349469.A.Generic
Link:
https://www.hybrid-analysis.com/sample/dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b
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/e9378fd9-1b38-4229-8a58-f288c096eed8
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1454061
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
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
Found malware configuration
Installs a global keyboard hook
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: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-06-08 15:50:06 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3sgtzijewopxhkcrpshnv5jhglohozxuaxo2dfarjzmpr6cbo6fq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost
Link:
https://tria.ge/reports/240608-s9w77sda7s/
Behaviour
Suspicious use of SetWindowsHookEx
Malware Config
C2 Extraction:
yoda2024.sytes.net:43833
Unpacked files
SH256 hash:
dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b
MD5 hash:
401385fe13c9dd61ef5fa9ac9bb823f8
SHA1 hash:
6157ff7dd30faa8a06b53db7c5a7f204041550ff
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_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/aa1a1f00-5c97-4963-b18c-f5d6020b87cd/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dc8d3ca124b3/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/dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
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_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.

Web download

RemcosRAT

Executable exe dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b

(this sample)

  
Link
https://www.virustotal.com/gui/file/dc8d3ca124b39f73a8517c8edaf52732dc7766f405dda194114e58f8f841778b/detection
  
Delivery method
Distributed via web download

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
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdipGetImageEncoders
gdiplus.dll::GdipGetImageEncodersSize
gdiplus.dll::GdipAlloc
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringA
WINMM.dll::mciSendStringW
WINMM.dll::PlaySoundW
WINMM.dll::waveInAddBuffer
WINMM.dll::waveInClose
WINMM.dll::waveInOpen
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExA
SHELL32.dll::ShellExecuteW
URL_MONIKERS_APICan Download & Execute componentsurlmon.dll::URLDownloadToFileW
urlmon.dll::URLOpenBlockingStreamW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::CreateProcessA
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::WriteProcessMemory
KERNEL32.dll::CloseHandle
WININET.dll::InternetCloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetDriveTypeA
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineW
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LookupPrivilegeValueA
WIN_CRYPT_APIUses Windows Crypt APIADVAPI32.dll::CryptAcquireContextA
ADVAPI32.dll::CryptGenRandom
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyA
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegCreateKeyW
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegOpenKeyExW
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::ChangeServiceConfigW
ADVAPI32.dll::ControlService
ADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::OpenSCManagerA
ADVAPI32.dll::OpenServiceW
ADVAPI32.dll::QueryServiceConfigW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::OpenClipboard
USER32.dll::CreateWindowExA

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