MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf9b8dd15ac62eba1b14417e1d2c19a9e87e381543c050c7d52ce7966679fce2. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments

SHA256 hash: cf9b8dd15ac62eba1b14417e1d2c19a9e87e381543c050c7d52ce7966679fce2
SHA3-384 hash: f90b7492f173c99875c80901b6b0421622b52882bd1f527ad6275134351ca7c673f5e0660591579d4894a3615b491b45
SHA1 hash: 96b9581abd49ebd72c58ba169516b4df8200a4ef
MD5 hash: 102f75395a43e616eadbc9b79d7942e1
humanhash: ack-pluto-pip-michigan
File name:Quotation_MayQuote312025�PDF.scr
Download: download sample
Signature RemcosRAT
File size:355'840 bytes
First seen:2025-05-21 11:02:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:Dc/G2hlLmArdSk/MD1PoX5NQ3Hy/d6MWLMYl7qsLspsD4roe72:D8LmAr6QQ3SlLWwyLsQ4Me72
TLSH T12D744B242BB4862BF2BE17B5F4B118194BF4D447FA4BE7AE1D48B4F81C03B59590227B
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
499
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quotation_MayQuote312025�PDF.scr
Verdict:
Malicious activity
Analysis date:
2025-05-21 11:07:00 UTC
Tags:
fileshare purecrypter netreactor snake keylogger evasion stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
81.4%
Tags:
virus micro msil
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Creating a file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
base64 lolbin masquerade obfuscated tracker
Result
Threat name:
MSIL Logger, MassLogger RAT, ResolverRAT
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected ResolverRAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Infostealer.Generic
Status:
Suspicious
First seen:
2025-05-21 10:34:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  3/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
System Location Discovery: System Language Discovery
Unpacked files
SH256 hash:
cf9b8dd15ac62eba1b14417e1d2c19a9e87e381543c050c7d52ce7966679fce2
MD5 hash:
102f75395a43e616eadbc9b79d7942e1
SHA1 hash:
96b9581abd49ebd72c58ba169516b4df8200a4ef
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:Detect_PowerShell_Obfuscation
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Malspam

RemcosRAT

Executable exe cf9b8dd15ac62eba1b14417e1d2c19a9e87e381543c050c7d52ce7966679fce2

(this sample)

  
Delivery method
Distributed via e-mail attachment

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 (GUARD_CF)high

Comments