MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc. 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


PureLogsStealer


Vendor detections: 13


Intelligence 13 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc
SHA3-384 hash: b4e1b2a7dbee210e81d00655f5d45c79f58e1689f9beeabd92a1e546f23c356a1f39bc5674e5e84af56abc554905dd17
SHA1 hash: 82e6783dda2b71285308999077f943457e77e4fb
MD5 hash: 605dba476275ff8dd0793b7f73ca6cd0
humanhash: eleven-four-fourteen-fanta
File name:update.exe
Download: download sample
Signature PureLogsStealer
Create hunting rule
File size:531'968 bytes
First seen:2025-05-27 05:48:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'813 x AgentTesla, 19'735 x Formbook, 12'282 x SnakeKeylogger)
ssdeep 6144:jeqyFn0i5hWnxswAIRcV8QXDj/nlXZoQz2B33gvMl9QYjb+mDNPylug2cLte7STc:WxB5hWnx2ocZDjBeiQwvq9QYbnSe2T
TLSH T17DB44A1BBA16DF90C2D99732C59B800453B4D6C17397EA0F78CA23D619433BBED8A587
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 abuse_ch
Tags:94-154-35-115 exe PureLogStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
426
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
update.exe
Verdict:
Malicious activity
Analysis date:
2025-05-27 06:10:02 UTC
Tags:
evasion stealer
Link:
https://app.any.run/tasks/0e1ae31a-9d6d-40ee-bbf5-1dbaa0232bbb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PWS.Stealer.41153.9623.11152.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68355402668438e362e7547b
Tags:
virus shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Сreating synchronization primitives
Reading critical registry keys
Connection attempt
Sending an HTTP GET request
Creating a file in the Program Files subdirectories
Using the Windows Management Instrumentation requests
Creating a window
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Creating a file
Launching a process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 exploit hacktool net_reactor obfuscated packed reconnaissance
Link:
https://www.filescan.io/uploads/6835522efd02ed5e05897926/reports/14255377-963b-44cb-b62f-18e00542cfb4/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/626c9ae5-5a7d-4d79-8129-3dab31c3d0c3
Result
Threat name:
PureLog Stealer, zgRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1699543
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Found many strings related to Crypto-Wallets (likely being stolen)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Self deletion via cmd or bat file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected PureLog Stealer
Yara detected UAC Bypass using CMSTP
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1699543 Sample: update.exe Startdate: 27/05/2025 Architecture: WINDOWS Score: 100 34 ip-api.com 2->34 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus / Scanner detection for submitted sample 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 7 other signatures 2->48 8 update.exe 15 5 2->8         started        13 svchost.exe 1 1 2->13         started        signatures3 process4 dnsIp5 36 ip-api.com 208.95.112.1, 49683, 80 TUT-ASUS United States 8->36 38 45.141.233.69, 1913, 49684 ASDETUKhttpwwwheficedcomGB Bulgaria 8->38 30 C:\Users\user\AppData\...\update.exe.log, ASCII 8->30 dropped 32 C:\Program Files\...\Chrome_boostrap.exe, PE32+ 8->32 dropped 50 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->50 52 Found many strings related to Crypto-Wallets (likely being stolen) 8->52 54 Self deletion via cmd or bat file 8->54 56 3 other signatures 8->56 15 powershell.exe 23 8->15         started        18 cmd.exe 1 8->18         started        20 Chrome_boostrap.exe 1 8->20         started        40 127.0.0.1 unknown unknown 13->40 file6 signatures7 process8 signatures9 58 Loading BitLocker PowerShell Module 15->58 22 WmiPrvSE.exe 15->22         started        24 conhost.exe 15->24         started        26 conhost.exe 18->26         started        28 choice.exe 1 18->28         started        process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc/
Threat name:
Win32.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-05-26 22:45:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wk4b47eejpiuwih25jk77bl5fzrar6dzjafqlygazjuyzei3to6a._file
Verdict:
malicious
Label(s):
purecrypter
Create hunting rule
Similar samples:
error
PureLogsStealer
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution spyware stealer
Link:
https://tria.ge/reports/250527-ghnk7sdq4v/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/83ac5576-3508-413d-9ecc-9e7d36e83528
Unpacked files
SH256 hash:
b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc
MD5 hash:
605dba476275ff8dd0793b7f73ca6cd0
SHA1 hash:
82e6783dda2b71285308999077f943457e77e4fb
Link:
https://www.unpac.me/results/058f62ec-aeaa-4af1-a5de-92ec0fcd98b4/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b2b81e7c844b/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/b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc

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__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

PureLogsStealer

Executable exe b2b81e7c844bd14b20faea55ff857d2e6208f879480b05e0c0ca698c911b9bbc

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3550926/
  
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 (GUARD_CF)high

Comments