Coverage › CVE-2015-8651

CVE-2015-8651 Mapped Sigma

Adobe Flash Player Integer Overflow Vulnerability

Vendor / product

Adobe — Flash Player

Description (CISA)

Integer overflow in Adobe Flash Player allows attackers to execute code.

Added to KEV

2022-05-25

Due date

2022-06-15

Required action

The impacted product is end-of-life and should be disconnected if still in use.

Known ransomware use

Unknown

CWE

CWE-189

CISA notes

https://nvd.nist.gov/vuln/detail/CVE-2015-8651

Elsewhere

cve.org · NVD · CISA KEV · JSON

ATT&CK techniques · CTID Mappings Explorer, ATT&CK 16.1, KEV snapshot 2025-07-28

3 mapping objects across 3 techniques. exploitation technique states how the vulnerability is exploited; primary and secondary impact state what exploitation achieves. They are different claims and are labelled as such.

Detection chain · ATT&CK Enterprise v19.2 detection strategies, analytics, log sources

T1105 Ingress Tool Transfer primary impact

• DET0060 Detect Ingress Tool Transfers via Behavioral Chain
  AN0165 Windows

  Unusual or uncommon processes initiate network connections to external destinations followed by file creation (tools downloaded).

  WinEventLog:Sysmon EventCode=3, 22 → DC0082 Network Connection Creation

  WinEventLog:Sysmon EventCode=11 → DC0039 File Creation

  WinEventLog:Sysmon EventCode=1 → DC0032 Process Creation

  Tunable: ParentProcessName DestinationIPCategory FilePathRegex
  AN0166 Linux

  Shell-based tools (curl, wget, scp) initiate connections to external domains followed by creation of executable files on disk.

  auditd:SYSCALL connect, execve, write → DC0064 Command Execution

  auditd:SYSCALL file creation/modification → DC0039 File Creation

  iptables:LOG TCP connections → DC0078 Network Traffic Flow

  Tunable: ToolName DownloadExtension
  AN0167 macOS

  Process execution of curl or wget followed by a network connection and a file created in temporary or user-specific directories.

  macos:endpointsecurity ES_EVENT_TYPE_NOTIFY_EXEC → DC0032 Process Creation

  macos:unifiedlog file write/create → DC0039 File Creation

  macos:unifiedlog connection open → DC0082 Network Connection Creation

  Tunable: DirectoryTargeted ProcessPath
  AN0168 ESXi

  Command line interface or vCLI triggers remote transfer using wget or curl, writing files into datastore paths or local tmp directories.

  esxi:hostd command execution → DC0064 Command Execution

  esxi:vmkernel file write → DC0039 File Creation

  Tunable: ToolName DatastorePath
  AN0169 Network Devices

  Network device logs show anomalous inbound file transfers or uncharacteristic flows with high payload volume to network devices with storage or automation hooks.

  NSM:Flow connection metadata → DC0078 Network Traffic Flow

  snmp:syslog firmware write/log event → DC0039 File Creation

  Tunable: PayloadVolumeThreshold ProtocolUsed

Sigma rules tagged attack.t1105 (87)

All 87 rules on the technique page →

T1189 Drive-by Compromise exploitation technique

• DET0176 Drive-by Compromise — Behavior-based, Multi-platform Detection Strategy (T1189)
  AN0498 Windows

  Correlated evidence of anomalous browser/network behavior (suspicious external resource fetches and script injection patterns) followed by atypical child processes, ephemeral execution contexts, memory modification or process injection, and unexpected file drops. Defender sees network requests to previously unseen/suspicious domains or resources + browser process spawning unusual children or loading unsigned modules + file writes or registry changes shortly after those requests.

  WinEventLog:Security EventCode=4624, 4648 → DC0067 Logon Session Creation

  WinEventLog:Security EventCode=4688 → DC0032 Process Creation

  WinEventLog:Sysmon EventCode=3, 22 → DC0082 Network Connection Creation

  WinEventLog:Application Browser or plugin/application logs showing script errors, plugin enumerations, or unusual extension load events → DC0038 Application Log Content

  etw:Microsoft-Windows-Kernel-Process Memory Modification / Unmapped module load or suspicious RWX allocations in the process space of a browser process → DC0020 Process Modification

  WinEventLog:Sysmon EventCode=11 → DC0039 File Creation

  NSM:Flow http.request: HTTP requests and responses for specific script resources, unexpected content-types (application/octet-stream for script URLs), suspicious referrers, or obfuscated javascript resources → DC0085 Network Traffic Content

  Tunable: TimeWindow KnownGoodDomainsList PayloadEntropyThreshold UserContext
  AN0499 Linux

  Correlated evidence of browser or webview fetches to uncommon domains or mutated JS resources (proxy/NGFW logs + Zeek/HTTP logs) followed by unexpected interpreters or script engines executing (python, ruby, sh) spawned from browser processes or user sessions, rapid on-disk staging in /tmp, and outbound connections that deviate from baseline. Defender sees: uncommon resource fetch → short-lived child process executions from user browser context → file writes in temp directories → anomalous outbound C2-like connections.

  auditd:SYSCALL execve: execve calls where a browser/webview process is parent and child is interpreter (python, sh, ruby) or downloader (curl, wget) → DC0032 Process Creation

  linux:syslog Application or browser logs (webview errors, plugin enumerations) indicating suspicious script evaluation or plugin loads → DC0038 Application Log Content

  NSM:Flow http::response: HTTP responses with suspicious content-type for scripts, long obfuscated javascript bodies, or redirects to exploit kit domains → DC0085 Network Traffic Content

  linux:Sysmon New files in /tmp, /var/tmp, $HOME/.cache, executed within TimeWindow after browser HTTP fetch → DC0039 File Creation

  NSM:Connections Outbound connections from newly spawned child processes or from the browser to uncommon endpoints or on anomalous ports → DC0082 Network Connection Creation

  Tunable: TempPathPatterns UserShellWhitelist DomainRarityThreshold
  AN0500 macOS

  Correlated evidence where Safari/Chrome/WebKit-based processes issue network requests for uncommon or obfuscated JS resources followed by spawning of script interpreters, launchd or ad-hoc binaries, unusual child processes, or dynamic library loads into browser processes. Defender sees: proxy/HTTP logs with suspicious resource content + unifiedlogs/ASL showing browser/plugin crashes or extension loads + process events indicating child process creation and file writes to /var/folders or /tmp shortly after the fetch.

  macos:unifiedlog Logs from unifiedlogging that show browser crashes, plugin enumerations, extension installs or errors around the same time as suspicious network fetches → DC0038 Application Log Content

  macos:unifiedlog process_create: Process creation where parent is Safari/Google Chrome and child is script interpreter or signed-but-unusual helper binary → DC0032 Process Creation

  macos:unifiedlog New files written to /var/folders, /tmp, ~/Library/Caches, or ~/Downloads by browser context or its children → DC0039 File Creation

  NSM:Flow HTTP/HTTPS requests for script resources flagged by content inspection (excessive obfuscation, eval usage, unusual redirects) → DC0085 Network Traffic Content

  macos:unifiedlog Anomalous dyld dynamic library loads or RWX memory mappings in browser process → DC0020 Process Modification

  Tunable: SleepyUserThreshold ExtensionInstallPolicy
  AN0501 Identity Provider

  Post-compromise identity & session anomalies that follow a drive-by compromise: token reuse from new/unfamiliar IPs, anomalous sign-in patterns for previously inactive users, unexpected consent/grant events, or provisioning changes. Defender sees an endpoint/browser compromise (network + endpoint signals) followed by unusual IdP events: new refresh token issuance, consent/consent-grant events, odd MFA bypass patterns, or unusual OAuth client registrations.

  azure:signinlogs SignIn: Sign-ins flagged as atypical (new geographic region, unfamiliar device id) shortly after correlated endpoint/browser compromise times → DC0002 User Account Authentication

  m365:unified Application Consent grants, new OAuth client registrations, or unusual admin-level activities executed by a user account shortly after suspected drive-by compromise → DC0038 Application Log Content

  saas:auth Refresh token issuance or refresh token usage from new IPs or user agents → DC0013 User Account Metadata

  AWS:CloudTrail ConsoleLogin: If IdP backed by cloud provider, Console login from new IP/agent after correlated endpoint compromise → DC0067 Logon Session Creation

  Tunable: IdpAlertWindow HighRiskCountryList DeviceTrustLevel

Sigma rules tagged attack.t1189 (3)

T1486 Data Encrypted for Impact secondary impact

• DET0215 Detection of Multi-Platform File Encryption for Impact
  AN0602 Windows

  High-frequency file write operations using uncommon extensions, followed by ransom note creation, registry tampering, or shadow copy deletion. Often uses CLI tools like vssadmin, wbadmin, cipher, or PowerShell.

  WinEventLog:Sysmon EventCode=1 → DC0032 Process Creation

  WinEventLog:Sysmon EventCode=11 → DC0039 File Creation

  WinEventLog:Sysmon EventCode=2 → DC0061 File Modification

  Tunable: FileExtension TargetFolder TimeWindow CommandLine
  AN0603 Linux

  Encryption via custom or open-source tools (e.g., openssl, gpg, aescrypt) recursively targeting user or system directories. Also includes overwrite of existing data and ransom note drops.

  auditd:SYSCALL openat, write, rename, unlink → DC0061 File Modification

  auditd:SYSCALL execve → DC0032 Process Creation

  Tunable: FilenamePattern SyscallBurstRate DirectoryTargeted
  AN0604 macOS

  Userland or kernel-level ransomware encrypting user files (Documents, Desktop) using srm, gpg, or compiled payloads. Often correlated with ransom note creation in multiple directories.

  macos:unifiedlog file encrypted|new file with .encrypted extension|disk write burst → DC0061 File Modification

  macos:unifiedlog exec srm|exec openssl|exec gpg → DC0032 Process Creation

  Tunable: ExtensionPattern VolumeTargeted
  AN0605 ESXi

  Ransomware encrypts .vmdk, .vmx, .log, or VM config files in VMFS datastores. May rename to .locked or delete/overwrite with encrypted versions. Often correlates with shell commands run through dcui, SSH, or vSphere.

  esxi:vmkernel rename .vmdk to .*.locked|datastore write spike → DC0061 File Modification

  esxi:shell openssl|tar|dd → DC0064 Command Execution

  Tunable: FileType UserContext
  AN0606 IaaS

  Encryption of cloud storage objects (e.g., S3 buckets) via Server-Side Encryption (SSE-C) or by replacing objects with encrypted variants. May include API patterns like PutObject with SSE-C headers.

  AWS:CloudTrail PutObject (with SSE-C), UploadPart (SSE-C) → DC0023 Cloud Storage Modification

  Tunable: SSEHeader AffectedBucket UserAgent

Sigma rules tagged attack.t1486 (16)

All 16 rules on the technique page →