MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3
SHA3-384 hash: ccc027f18968d6a199af105731a688d4d55dfcfd32f4bc3fe11687f4e7ef2df5df5e59862f61228546cc5731b624c429
SHA1 hash: fb19c2cb434c0a2c191bb9c4a4cad415ff1ff6b8
MD5 hash: 77f3980df7ab7004f78c61f07afccd54
humanhash: muppet-beer-muppet-lion
File name:INQRY-02025061620250601_150436-PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:745'688 bytes
First seen:2025-08-18 05:13:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (542 x GuLoader, 116 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 12288:ivt14eXa0YEBDV44toQdd31pfPn/6QNYERYKOylwfqoWMvxxE+B:ivz4f0JRV48xd11hPniQNHYKOyuqoWMg
TLSH T1D6F4229C7FA0D827C79996366678EF65E473699038C11737A7702B7CB930990EF1C282
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter threatcat_ch
Tags:exe RemcosRAT signed

Code Signing Certificate

Organisation:Chatoyance
Issuer:Chatoyance
Algorithm:sha256WithRSAEncryption
Valid from:2025-08-04T23:06:11Z
Valid to:2026-08-04T23:06:11Z
Serial number: 4d225ad01a330517255e02654016df10806acde4
Thumbprint Algorithm:SHA256
Thumbprint: 6e81eb085d228f210d0e11b4aa22cf45ce674330ade28fb3c41f261b56dd0ef3
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
INQRY-02025061620250601_150436-PDF.exe
Verdict:
Malicious activity
Analysis date:
2025-08-18 05:14:49 UTC
Tags:
guloader remcos rat remote stealer
Link:
https://app.any.run/tasks/638687c2-037b-4143-ad32-4ac1fd697f21

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/21886/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68a2b6a6c2f5296a1a2803ee
Tags:
injection virus blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Launching a process
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug blackhole installer microsoft_visual_cc overlay overlay packed signed
Link:
https://www.filescan.io/uploads/68a2b6afa4bdac9f5b9b1fa2/reports/c1a9113c-0bd4-4660-9cd4-c598315197c7/overview
Verdict:
Suspicious
Labled as:
Malware_47.1
Link:
https://www.hybrid-analysis.com/sample/caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/81a55130-0bd1-4aed-99e7-aff5447a9ce0
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad.phis.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1759036
Signature
AI detected suspicious PE digital signature
Early bird code injection technique detected
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Queues an APC in another process (thread injection)
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/77f3980df7ab7004f78c61f07afccd54
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-08-18 05:14:25 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zlxyq6oa2nbbasyzg56fqvftwuandrtpi25b6dxkpw5gvm2wfpzq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos collection defense_evasion discovery downloader execution rat
Link:
https://tria.ge/reports/250818-fw5wzazzhv/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Blocklisted process makes network request
Legitimate hosting services abused for malware hosting/C2
Modifies trusted root certificate store through registry
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Guloader family
Guloader,Cloudeye
Remcos
Remcos family
Malware Config
C2 Extraction:
160.25.72.95:2404
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b581881f-7acc-4cfd-8d89-7d68e4720f0c
Unpacked files
SH256 hash:
caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3
MD5 hash:
77f3980df7ab7004f78c61f07afccd54
SHA1 hash:
fb19c2cb434c0a2c191bb9c4a4cad415ff1ff6b8
Link:
https://www.unpac.me/results/de7cbcb1-5828-4370-86ae-94faa903cbcd/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/caef8879c0d3/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/caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3

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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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)

File information

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

Malspam

RemcosRAT

Executable exe caef8879c0d342104b19377c5854b3b500d1c66f46ba1f0eea7dba6ab3562bf3

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/21886/

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

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