MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5defb651584e12beeeec5442aca649e832e229f7db1ebc67b26f18e08950d117. 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
Threat unknown
Vendor detections: 9
| SHA256 hash: | 5defb651584e12beeeec5442aca649e832e229f7db1ebc67b26f18e08950d117 |
|---|---|
| SHA3-384 hash: | 5087efe987325707fb31e1c8c84ea1df442db9ce8585b0255e4840461d3d89eabba3ebb8a4784e191cac9439545ecdd0 |
| SHA1 hash: | 47ee8a14a178df4c304f03f5dc46623af6c65c83 |
| MD5 hash: | fb2282398b87a96d584f5731ad8d6aed |
| humanhash: | violet-salami-bacon-edward |
| File name: | Coolex.dll |
| Download: | download sample |
| File size: | 1'499'136 bytes |
| First seen: | 2025-02-14 07:07:42 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| ssdeep | 6144:G6OmqcT7TsTEgc5+uaruzqKuAUlJj/+wIJU5W+D0mM3xL:G6Om1T7TsTEgcx9qKqJj/pJ9uBL |
| TLSH | T1F965A3933B058D82D63613F9D192C2785363AECA2232D30B29F5FEA7BDB23931D45546 |
| TrID | 56.5% (.EXE) Win64 Executable (generic) (10522/11/4) 11.0% (.ICL) Windows Icons Library (generic) (2059/9) 10.9% (.EXE) OS/2 Executable (generic) (2029/13) 10.7% (.EXE) Generic Win/DOS Executable (2002/3) 10.7% (.EXE) DOS Executable Generic (2000/1) |
| Magika | pebin |
| File icon (PE): |  |
| dhash icon | 8460f97878f16008 |
| Reporter |  dsadsasd |
| Tags: | exe stealer loader |
dsadsasd
The website coolexcall.pro presented itself as a platform for job seekers, enticing potential candidates with appealing offers for employment. Here’s a detailed breakdown of the incident:Misleading Job Offers:
The site advertised employment opportunities to attract users. The service appeared legitimate at first glance, promising to connect job seekers with employers.
Initiating Contact via App Calls:
Once a user registered or expressed interest in a job, the platform arranged a call through its dedicated application. This call was positioned as a step in the job interview or onboarding process.
Exploitation Through Invite Code:
During the call, users received an invite code that triggered the automatic download of a malicious software known as a malware stealer. This code exploited vulnerabilities in the application, bypassing standard security measures.
Malware Stealer Operation:
The malware was designed to covertly harvest sensitive information from the user’s device. This includes login credentials, financial data, and other personal details, which could later be used for unauthorized financial transactions or identity theft.
Additional Company and Service Details:
The Company: The entity behind coolexcall.pro operated under the guise of a recruitment service. However, evidence suggests that the company’s primary intent was to propagate malware rather than facilitate genuine job placements.
The Product/Service Offered: On the surface, the service was marketed as a platform that connects job seekers with potential employers. In reality, it used this façade to build trust and lure users into a cyber trap. The product’s underlying mechanism, involving the invite code during app calls, was exploited to deploy malicious software on unsuspecting users’ devices.
Conclusion:
What happened was a calculated cyber-attack where a fake job recruitment service was used as a cover to distribute harmful malware. The deceptive strategy relied on social engineering to lower the victim's guard, making the malware download appear as a routine part of the job application process. This breach not only endangered personal and financial information but also raised serious concerns about the security protocols in place on similar platforms.
Intelligence
File Origin
# of uploads :
1
# of downloads :
509
Origin country :
GBVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Coolex.dll
Verdict:
No threats detected
Analysis date:
2025-02-14 07:36:02 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Verdict:
Clean
Score:
99.9%
Tags:
n/a
Result
Verdict:
Clean
Maliciousness:
Behaviour
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
cryptor_detected masquerade net_reactor obfuscated obfuscated obfuscated packed
Verdict:
Malicious
Labled as:
Tedy.Generic
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:
Suspicious
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
52 / 100
Signature
.NET source code contains potential unpacker
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Score:
72%
Verdict:
Malware
File Type:
PE
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
8/10
Tags:
discovery
Behaviour
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
.NET Reactor proctector
Downloads MZ/PE file
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
5defb651584e12beeeec5442aca649e832e229f7db1ebc67b26f18e08950d117
MD5 hash:
fb2282398b87a96d584f5731ad8d6aed
SHA1 hash:
47ee8a14a178df4c304f03f5dc46623af6c65c83
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | DotNet_Reactor |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on. |
| Rule name: | INDICATOR_EXE_Packed_DotNetReactor |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with unregistered version of .NET Reactor |
| Rule name: | Lumma_Stealer_Detection |
|---|---|
| Author: | ashizZz |
| Description: | Detects a specific Lumma Stealer malware sample using unique strings and behaviors |
| Reference: | https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/ |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | PureCrypter |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies PureCrypter, .NET loader and obfuscator. |
| Reference: | https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| 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.
Web download
exe 5defb651584e12beeeec5442aca649e832e229f7db1ebc67b26f18e08950d117
(this sample)
Dropping
stealers
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (GUARD_CF) | high |
| CHECK_TRUST_INFO | Requires Elevated Execution (level:requireAdministrator) | high |
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