MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1
SHA3-384 hash: f0d71813bdbb150852679f18467cf50e1de83fd8aab1bced2d24baf394a52909b3223d26cc2d84f336df2509ab6c096f
SHA1 hash: ac1a5953c498a1b618dd66737167a9c974292988
MD5 hash: 1ad288275f0605d5b7d4bef5b1ebf9cc
humanhash: eleven-river-mango-pip
File name:file
Download: download sample
Signature PureLogsStealer
Create hunting rule
File size:1'241'088 bytes
First seen:2024-02-05 14:48:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:rnZwXYWXrmEEZ3JU51n3x7z9uvVCJ0EEum+vOMf2+KK:rnZwXYWqpJ8VpRdE/+K
Threatray 2'057 similar samples on MalwareBazaar
TLSH T10345125967194637CB7AAA34D9B3A7010B50FAB38033E70793C5A438715B6BF2FA0746
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter jstrosch
Tags:.NET exe MSIL PureLogStealer


Avatar
jstrosch
Found at hxxp://magic.poisontoolz[.]com/krypt.exe by #subcrawl

Intelligence

File Origin
# of uploads :
1
# of downloads :
305
Origin country :
US US
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/474753/
Detection(s):
Win.Trojan.EmbeddedDotNetBinary-9940868-0
Create hunting rule

Win.Trojan.EmbeddedReversedDLL-9940922-0
Create hunting rule

Win.Trojan.Generic-10014419-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65c0f568b012cce0edbd4e64/reports/81fcecea-ce02-4ac3-bc79-ad77ccffb14f/overview
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1
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:
Unknown
Link:
https://analyze.intezer.com/analyses/764c60a0-8431-4bba-9d89-645450243620
Result
Threat name:
PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1386883
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential dropper URLs found in powershell memory
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Rare Remote Thread Creation By Uncommon Source Image
Sigma detected: Silenttrinity Stager Msbuild Activity
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1386883 Sample: file.exe Startdate: 05/02/2024 Architecture: WINDOWS Score: 100 46 magic.poisontoolz.com 2->46 48 fp2e7a.wpc.phicdn.net 2->48 50 fp2e7a.wpc.2be4.phicdn.net 2->50 68 Antivirus detection for URL or domain 2->68 70 Antivirus / Scanner detection for submitted sample 2->70 72 Multi AV Scanner detection for submitted file 2->72 74 12 other signatures 2->74 9 DynamicDirectory.exe 1 2->9         started        12 file.exe 1 2->12         started        14 powershell.exe 2->14         started        16 2 other processes 2->16 signatures3 process4 signatures5 76 Antivirus detection for dropped file 9->76 78 Multi AV Scanner detection for dropped file 9->78 80 Machine Learning detection for dropped file 9->80 18 DynamicDirectory.exe 2 9->18         started        21 DynamicDirectory.exe 9->21         started        82 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 12->82 84 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 12->84 86 Injects a PE file into a foreign processes 12->86 23 file.exe 6 12->23         started        88 Potential dropper URLs found in powershell memory 14->88 26 conhost.exe 14->26         started        28 WmiPrvSE.exe 14->28         started        30 conhost.exe 16->30         started        32 DynamicDirectory.exe 16->32         started        process6 file7 56 Writes to foreign memory regions 18->56 58 Allocates memory in foreign processes 18->58 60 Sample uses process hollowing technique 18->60 62 Injects a PE file into a foreign processes 18->62 34 MSBuild.exe 18->34         started        37 MSBuild.exe 18->37         started        39 MSBuild.exe 18->39         started        44 C:\Users\user\...\DynamicDirectory.exe, PE32 23->44 dropped signatures8 process9 signatures10 64 Injects a PE file into a foreign processes 34->64 41 MSBuild.exe 34->41         started        66 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 37->66 process11 dnsIp12 52 magic.poisontoolz.com 104.21.10.90, 443, 49705 CLOUDFLARENETUS United States 41->52 54 194.33.191.53, 49704, 49706, 49707 AQUA-ASRO unknown 41->54
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1/
Threat name:
ByteCode-MSIL.Trojan.PureLogStealer
Create hunting rule
Status:
Malicious
First seen:
2024-02-04 14:25:52 UTC
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6v5g6gyzzm2ca6p5vqx5aoqriugdf2767rfyfhbaelyk3yrx4taq._file
Verdict:
malicious
Similar samples:
2ba23a256551d2b59785b96b6e2b79b3a1a63c3e634b6a1e2690d48c8450e80a
PureLogsStealer
4acddc15352051552d4684fff6d07d18305cf7276d208adf7e2f59c5a70c909a
PureLogsStealer
68d282c16c83a849e29fb395b3e1864c3df158edf47a92ffb078b81dcafd7888
PureLogsStealer
dc306a538c10c8e4ded86db7b1c4648191db7581b76c506bcf9ad511a5120aa8
PureLogsStealer
ecc79919e41b1ded8a01aa38ede45755f216d0f490c44f7e1386c9f140daa972
PureLogsStealer
f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1
PureLogsStealer
+ 2'047 additional samples on MalwareBazaar
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:zgrat rat
Link:
https://tria.ge/reports/240205-r62svaadf8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in System32 directory
Suspicious use of SetThreadContext
Executes dropped EXE
Detect ZGRat V1
ZGRat
Unpacked files
SH256 hash:
f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1
MD5 hash:
1ad288275f0605d5b7d4bef5b1ebf9cc
SHA1 hash:
ac1a5953c498a1b618dd66737167a9c974292988
Detections:
Typical_Malware_String_Transforms
Create hunting rule
Link:
https://www.unpac.me/results/3b182db8-b612-4a5f-9a54-557dede3ae2b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f57a6f1b19cb/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/f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1

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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

Web download

PureLogsStealer

Executable exe f57a6f1b19cb342079fdac2fd03a11450c32ebfefc4b829c2022f0ade237e4c1

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/474753/

Comments