MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1. 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: 7


Intelligence 7 IOCs YARA 32 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1
SHA3-384 hash: 109cec1e462997594ed738c5b1fe30aa68a0c4b7af0836229adb96d97b8756e73554abbd6da8f6c8771d898eadae4804
SHA1 hash: 42bd8794e6a851370d8e4186bb4219f23075ba9c
MD5 hash: 313be100eb5de9b5412aa0a7afa86323
humanhash: mars-salami-lemon-music
File name:Claude Setup.exe
Download: download sample
File size:6'989'472 bytes
First seen:2026-06-13 14:56:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d42595b695fc008ef2c56aabd8efd68e (438 x Vidar, 94 x Stealc, 92 x Rhadamanthys)
ssdeep 49152:K/5n5Ot6hWBOYKq8lWgb/THmEHFrzR7ZFetiA2eJcgaEGFcXO8Fm9js0rBYMwKep:K13tfXGERTeB9rO+oEv
TLSH T1EF665A07E8A555E9C0AEE63489629253BA717C485F3127D72F90F7382F77BC06AB9700
TrID 27.0% (.EXE) Win64 Executable (generic) (6522/11/2)
20.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.6% (.EXE) Win32 Executable (generic) (4504/4/1)
8.5% (.ICL) Windows Icons Library (generic) (2059/9)
8.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon a66968f0f0e85192 (1 x SalatStealer)
Reporter Anonymous
Tags:bot_upload exe signed

Code Signing Certificate

Organisation:Anthropic, PBC
Issuer:DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1
Algorithm:sha256WithRSAEncryption
Valid from:2025-10-14T00:00:00Z
Valid to:2026-10-20T23:59:59Z
Serial number: 0ed59ca47f15d09a57755e4b12d31a50
Thumbprint Algorithm:SHA256
Thumbprint: dbde5d16768ed0c17bf8e62fdbf642aded4744f255eb59ef961e7fd8e2474808
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
145
Origin country :
IL IL
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
https://claude.com/download
Verdict:
Malicious activity
Analysis date:
2026-05-25 20:15:29 UTC
Tags:
loader golang evasion stealer fingerprinting
Link:
https://app.any.run/tasks/eb8c8b6b-2ed9-4969-abc4-f239601a242a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/70629/
Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a2d6fb934eaf30d8ce5854e
Tags:
injection obfusc crypt
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
DNS request
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-vm base64 crypto expand golang installer-heuristic lolbin packed signed
Link:
https://www.filescan.io/uploads/6a2d6fad1f652d68657dea8e/reports/dc1a6dab-7555-4dda-833d-e5d4d0fc2271/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1
Verdict:
Clean
File Type:
PE
First seen:
2026-05-22T20:58:00Z UTC
Last seen:
2026-06-12T15:01:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1/results?tab=lookup
Malware family:
Anthropic, PBC
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b26700dd-ed9f-4650-91d8-2dc9c474894b
Score:
47%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7enk2taxqp56tmrr36vwozv666p3b62unwh676vi6wlcqvvwgsqq._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
discovery
Link:
https://tria.ge/reports/260613-sbd9qshv7m/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Drops file in System32 directory
Network Share Discovery
Unpacked files
SH256 hash:
f91aad4c1783fbe9b231dfab6766bef79fb0fb546d8feffaa8f5962856b634a1
MD5 hash:
313be100eb5de9b5412aa0a7afa86323
SHA1 hash:
42bd8794e6a851370d8e4186bb4219f23075ba9c
Link:
https://www.unpac.me/results/a01fa54f-a4bb-4e24-8bdb-430c07861be9/
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:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__ConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Gentlemen_Ransomware_Binary
Create hunting rule
Author:Bedrock Safeguard Inc.
Description:Detects The Gentlemen ransomware binary (Go/Garble)
Reference:https://github.com/Bedrock-Safeguard/gentlemen-decryptor
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:Golangmalware
Create hunting rule
Author:Dhanunjaya
Description:Malware in Golang
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:golang_duffcopy_amd64
Create hunting rule
Rule name:Golang_Find_CSC846
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:Golang_Find_CSC846_Simple
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:HiveRansomware
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule To Detect Hive V4 Ransomware
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RemusStealer_GoPayload
Create hunting rule
Author:burger
Description:Detects RemusStealer Go-compiled payload
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Suspicious_Golang_Binary
Create hunting rule
Author:Tim Machac
Description:Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/70629/

Comments