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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9. 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: 11


Intelligence 11 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9
SHA3-384 hash: 57caf5336d59361d3fdde1655f65ed6990cac63016fb5902bd42fcc43f4e43a8693bcb378e9921e8b25a82d96fe31abf
SHA1 hash: bcbb3a94fc0c8560580f32130f6f10e535ae205c
MD5 hash: d4a600901a6a14b13b019b17a2101aba
humanhash: wolfram-fourteen-bluebird-arkansas
File name:installerwn.exe
Download: download sample
Signature PureLogsStealer
Create hunting rule
File size:3'836'928 bytes
First seen:2024-05-01 18:09:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'298 x AgentTesla, 20'717 x Formbook, 12'402 x SnakeKeylogger)
ssdeep 49152:a2C+Jdpu3bzRoFQBHHTRdGwdTNA3qENNLZsDlZbMSlraAyuO0Bm2rZKHt:
Threatray 373 similar samples on MalwareBazaar
TLSH T1DF061233BA83FEED57A80D74E4CA16484C9058B7A3DC91D8F8C847AE91F555CCA66CB0
TrID 56.5% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
Reporter izpir
Tags:exe PureLogStealer zgRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
326
Origin country :
ES ES
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9.exe
Verdict:
Malicious activity
Analysis date:
2024-05-01 18:12:09 UTC
Tags:
zgrat
Link:
https://app.any.run/tasks/21a8f41b-9504-4aef-bdb6-2767e71c38a5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packer.DotNetRev-10003973-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/66328583de9c2e310306b6ab/reports/239c31f6-8a1b-4c88-b786-41ebfa8dce8b/overview
Verdict:
Malicious
Labled as:
Matrioska.Generic
Link:
https://www.hybrid-analysis.com/sample/c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/86c55da1-171d-4541-9cda-d3e615c3ba3a
Result
Threat name:
PureLog Stealer, zgRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1434843
Signature
.NET source code contains potential unpacker
Adds extensions / path to Windows Defender exclusion list
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Encrypted powershell cmdline option found
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Encoded PowerShell Command Line
Yara detected Costura Assembly Loader
Yara detected PureLog Stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1434843 Sample: installerwn.exe Startdate: 01/05/2024 Architecture: WINDOWS Score: 100 38 wndlogon.hopto.org 2->38 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus detection for URL or domain 2->54 56 Antivirus / Scanner detection for submitted sample 2->56 58 8 other signatures 2->58 8 installerwn.exe 8 2->8         started        12 installerwn.exe 5 2->12         started        15 svchost.exe 1 1 2->15         started        signatures3 process4 dnsIp5 34 C:\Users\user\AppData\...\installerwn.exe, PE32+ 8->34 dropped 36 C:\Users\user\...\Uijvldxojwzgtfjsnprppr.exe, PE32 8->36 dropped 60 Encrypted powershell cmdline option found 8->60 62 Adds extensions / path to Windows Defender exclusion list 8->62 17 Uijvldxojwzgtfjsnprppr.exe 2 8->17         started        20 powershell.exe 23 8->20         started        22 powershell.exe 16 8->22         started        40 wndlogon.hopto.org 94.156.8.189, 44810 NET1-ASBG Bulgaria 12->40 42 109.206.240.13, 44810, 49711, 49714 AWMLTNL Germany 12->42 64 Antivirus detection for dropped file 12->64 66 Multi AV Scanner detection for dropped file 12->66 68 Machine Learning detection for dropped file 12->68 70 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 12->70 24 powershell.exe 12->24         started        44 127.0.0.1 unknown unknown 15->44 file6 signatures7 process8 signatures9 46 Multi AV Scanner detection for dropped file 17->46 48 Machine Learning detection for dropped file 17->48 50 Loading BitLocker PowerShell Module 20->50 26 conhost.exe 20->26         started        28 WmiPrvSE.exe 20->28         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9/
Threat name:
ByteCode-MSIL.Trojan.Matrioska
Create hunting rule
Status:
Malicious
First seen:
2023-05-12 23:50:20 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
3
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ynkcnx57x4ul6l2ar3jgl4ncjdkfyj6uhhy3se75pvg2fgocqs4q._file
Verdict:
malicious
Similar samples:
12a5158d4768fb51739e6b0fc155057116e20228c7ab22ef3e08dbfdca2e13ad
PureLogsStealer
6885a9ebd3e4a2d367b385f8d846f528bacfc944b7be6f1e2eca12d6c951a7d5
PureLogsStealer
7980d2f7bb43e83e27db24f256a7b34cb1afe6b5116ecad523af7dfb5b12864d
PureLogsStealer
82a3a3234c7dbddf79b32b1cf05cd7d5806512824d0536edcbce4dc529519d92
PureLogsStealer
9206df8f28b1540fa4f76fc385b2d786fadaef5cf7b0e24e5218ff7fff0fcbad
PureLogsStealer
c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9
PureLogsStealer
d53c05389816a8e7280281873cbb49d2940ab0861d8052b0100f0d4dee9568aa
PureLogsStealer
e5b18d53835af3194899ef34effacf1e886854716b78ad0ca948d079d0550f74
PureLogsStealer
fd24ac75f267d1cc406697651273087eaf7c5f86ff59d323fdf66a41915429b0
PureLogsStealer
+ 363 additional samples on MalwareBazaar
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:zgrat rat
Link:
https://tria.ge/reports/240501-wr1pfsch5x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Drops file in System32 directory
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detect ZGRat V1
ZGRat
Unpacked files
SH256 hash:
cf8316138d483a50d4fb7852b28ad0bf81c44c2a8578cdf496d4090943ce69e6
MD5 hash:
f955135c1d3e759278ec98b919c08a09
SHA1 hash:
3b7088540e6088717ad6b50864aedfb30fe88c83
Link:
https://www.unpac.me/results/aa3e3f0e-2afc-4b33-b3d9-8bdd3ef1c6a2/
SH256 hash:
c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9
MD5 hash:
d4a600901a6a14b13b019b17a2101aba
SHA1 hash:
bcbb3a94fc0c8560580f32130f6f10e535ae205c
Link:
https://www.unpac.me/results/aa3e3f0e-2afc-4b33-b3d9-8bdd3ef1c6a2/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c35426dfbfbf/report/overview.html
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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings

File information

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

Web download

PureLogsStealer

Executable exe c35426dfbfbf28bf2f408ed265f1a248d45c27d439f1b913fd7d4da299c284b9

(this sample)

  
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