MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ccf557e54f0f8f02baf682d87c50815e89cc0c8ed10438496fc1cc285664c9bb. 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: 16
| SHA256 hash: | ccf557e54f0f8f02baf682d87c50815e89cc0c8ed10438496fc1cc285664c9bb |
|---|---|
| SHA3-384 hash: | fe6f28e3afa0b1c7285c04bc64f0e785368c575bb37daa9fc26a02fb54715f5c5cf44d806900671b49be36df483464d5 |
| SHA1 hash: | 8c11e37c1c5d4da288d11d0418bad10360804943 |
| MD5 hash: | cc4d99645fcda75fe95a5e6c59739da3 |
| humanhash: | fish-uncle-india-artist |
| File name: | z1employeerecordpdf.exe |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'210'048 bytes |
| First seen: | 2025-12-07 22:00:08 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 6e7f9a29f2c85394521a08b9f31f6275 (326 x GuLoader, 65 x AgentTesla, 63 x RemcosRAT) |
| ssdeep | 24576:0TMn6rH7mZ6cGB2GzzAuyACxeEzpVessMBFa8QRQt5bgw/msswwYz1J:0TMn6rHSZ6cGQGI3XsmpV7sMXPQRQt5h |
| Threatray | 2'331 similar samples on MalwareBazaar |
| TLSH | T13C452283792C90DADD6C0933587B459B4A32BD39C9D01EA723C4B7BC6472152AB1F2F6 |
| 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 |
| dhash icon | 746c6c6c6c6c6c60 (5 x RemcosRAT, 3 x GuLoader, 1 x NanoCore) |
| Reporter |  FXOLabs |
| Tags: | exe RemcosRAT signed |
Code Signing Certificate
| Organisation: | Chromene |
|---|---|
| Issuer: | Chromene |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-10-11T23:52:13Z |
| Valid to: | 2026-10-11T23:52:13Z |
| Serial number: | 63edfe0abaf7099a3eb580de9f19e0a9d1a8471e |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 72616e9b7facd7c0487ebe6fd102032eae47c5bc9ad9c0ab3bddbf0266da46fe |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
201
Origin country :
BRVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Malware family:
remcos
ID:
1
File name:
employee record pdf.arj
Verdict:
Malicious activity
Analysis date:
2025-12-07 18:55:55 UTC
Tags:
arch-exec rat remcos
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
70%
Tags:
injection obfusc agent
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Creating a file
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Malicious
Labled as:
Malware_50.9
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-07T14:37:00Z UTC
Last seen:
2025-12-09T20:35:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.GuLoader.sb HEUR:Trojan-Downloader.Win32.Minix.gen Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Agent.sb Trojan.NSIS.Makoob.sba VHO:Trojan.Win32.GuLoader.gen Trojan.NSIS.Makoob.sbe Trojan.NSIS.Makoob.sbb Backdoor.Win32.Remcos.sb
Verdict:
Unknown
Score:
93%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Detection:
remcos
Verdict:
Malicious
Threat:
Family.REMCOS
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 2'321 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:guloader family:remcos botnet:remotehost collection discovery downloader persistence rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
Guloader family
Guloader,Cloudeye
Remcos
Remcos family
Malware Config
C2 Extraction:
104.168.5.56:2404
104.168.5.56:5000
104.168.5.56:5000
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
6bf9cccd8a600f4d442efe201e8c07b49605ba35f49a4b3ab22fa2641748e156
MD5 hash:
48f3e7860e1de2b4e63ec744a5e9582a
SHA1 hash:
420c64d802a637c75a53efc8f748e1aede3d6dc6
SH256 hash:
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 hash:
564bb0373067e1785cba7e4c24aab4bf
SHA1 hash:
7c9416a01d821b10b2eef97b80899d24014d6fc1
SH256 hash:
ccf557e54f0f8f02baf682d87c50815e89cc0c8ed10438496fc1cc285664c9bb
MD5 hash:
cc4d99645fcda75fe95a5e6c59739da3
SHA1 hash:
8c11e37c1c5d4da288d11d0418bad10360804943
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
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 |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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