T1070.004: Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration)
T1070.004 (Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration)) is classified under the Defense Evasion tactic within the MITRE ATT&CK framework. Tradecraft designed to avoid detection, analysis, and eradication throughout their operational lifecycle, including process injection, file obfuscation, and disabling defensive telemetry. In telemetry gathered across enterprise endpoints and the EMBER 2018 benchmark, this technique was weaponized across 19 distinct malware families, totaling over 3,439 validated samples.
Technical Anatomy & Adversary Tradecraft
Adversaries leverage Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration) to accomplish operational objectives while minimizing anomalous forensic footprints. When executing Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration), malicious binaries commonly interact directly with low-level Windows APIs, kernel mode drivers, or native scripting interfaces to bypass traditional file-integrity monitors and static antivirus signatures.
In modern multi-stage campaigns, T1070.004 is frequently observed functioning as an intermediate bridge: initial access payloads (such as spearphishing loaders or exploit macros) execute Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration) to establish in-memory execution or persistence before staging secondary ransomware or data-exfiltration implants.
https://attack.mitre.org/techniques/T1070/004/.
Detection Engineering & Threat Hunting
Detecting Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration) requires telemetry correlation across endpoint detection and response (EDR) agents, Sysmon event streams, and security information event management (SIEM) pipelines:
- Process Creation & Lineage: Monitor parent-child process anomalies where unexpected parent binaries (e.g., Office executables, web browsers, or script hosts) spawn command shells or native Windows utilities.
- API Hooking & Behavioral Telemetry: EDR platforms should flag rapid calls to memory allocation, process injection, or registry manipulation APIs originating from unbacked executable memory regions.
- Network Anomaly Correlation: Cross-reference endpoint execution timestamps with external network socket establishment to identify anomalous beaconing or covert data staging.
SOC Containment & Hardening Guidance
To mitigate risks associated with T1070.004 (Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration)) across production infrastructure, security teams should implement the following defensive controls:
- Attack Surface Reduction (ASR): Enforce strict application control policies (WDAC or AppLocker) to restrict execution to signed and verified corporate binaries.
- Least Privilege & Credential Hygiene: Restrict local administrative privileges to prevent adversaries from tampering with defensive agents or escalating privileges.
- Network Microsegmentation: Restrict lateral communication across endpoint VLANs to prevent wormable payloads from utilizing Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration) across adjacent network segments.
Cataloged Malware Families Utilizing T1070.004 (19 Families)
The following malware families in the SystemHelpDesk catalog have been verified utilizing T1070.004 (Indicator Removal on Host: File Deletion (Deleting the dropped executable after exfiltration)):
| Family | Category | Sample Count | Technical Summary |
|---|---|---|---|
| virlock | Ransomware File Infector | 3,132 | VirLock (tracked in academic literature and threat databases as VirRansom) represents a historic and technically unique evolutionary milestone in malware engine... |
| mudrop | Trojan | 45 | Mudrop (cataloged across security vendors under signatures including Trojan-Dropper.Win32.Mudrop, Trojan:Win32/Mudrop, and Trojan.Mudrop) is a high-volume Windo... |
| equationdrug | Advanced Threat | 25 | Trojan:Win32/EquationDrug is a state-of-the-art cyber-espionage platform attributed by global threat intelligence researchers to the Equation Group (associated ... |
| blamon | Ransomware | 22 | Blamon (tracked across endpoint security telemetry under signatures Ransom:Win32/Blamon, Ransom:Win32/Blamon.A, and Trojan-Ransom.Win32.Blamon) is a destructive... |
| krucky | Ransomware | 22 | Krucky (tracked in malware research telemetry under designations including Ransom:Win32/Krucky, Ransom:Win32/Krucky.A, and Trojan-Ransom.Win32.Krucky) is a dest... |
| golroted | Ransomware | 21 | Golroted (classified across antimalware engines under designations including Ransom:Win32/Golroted, Trojan-Ransom.Win32.Golroted, and Win32/Golroted) is a destr... |
| pajetbin | Ransomware | 21 | Pajetbin (classified across threat telemetry as Ransom:Win32/Pajetbin, Trojan-Ransom.Win32.Pajetbin, and Win32/Pajetbin) is a destructive crypto-ransomware fami... |
| schoolboy | Ransomware | 21 | Schoolboy (identified in endpoint telemetry as Ransom:Win32/Schoolboy, Trojan-Ransom.Win32.Schoolboy, and Win32/Schoolboy) is a targeted crypto-ransomware famil... |
| tonmye | Ransomware | 21 | Tonmye (tracked across antimalware research as Ransom:Win32/Tonmye, Trojan-Ransom.Win32.Tonmye, and Win32/Tonmye) is a destructive crypto-ransomware family targ... |
| blihan | Ransomware | 20 | Blihan (classified in endpoint telemetry as Ransom:Win32/Blihan, Trojan-Ransom.Win32.Blihan, and Win32/Blihan) is an aggressive crypto-ransomware family designe... |
| pasta | Ransomware | 20 | Pasta (identified in antimalware telemetry under signatures Ransom:Win32/Pasta, Trojan-Ransom.Win32.Pasta, and Win32/Pasta) is an extortion crypto-ransomware fa... |
| qzonit | Ransomware | 20 | Qzonit (cataloged across global antimalware repositories under designations including Ransom:Win32/Qzonit, Trojan-Ransom.Win32.Qzonit, and Win32/Qzonit) is a ta... |
| wdjiange | Ransomware | 20 | Wdjiange (classified in threat research telemetry under signatures Ransom:Win32/Wdjiange, Trojan-Ransom.Win32.Wdjiange, and Win32/Wdjiange) is an aggressive Win... |
| crusis | Ransomware | 19 | Crusis (widely known in the cybersecurity community as the CrySiS or Dharma ransomware family and cataloged by Microsoft as Ransom:Win32/Crusis) is an infamous ... |
| delfiles | Ransomware | 5 | Trojan:Win32/Delfiles is a persistent, stealthy trojan designed to breach endpoint defenses and securely deliver secondary, high-severity payloads like ransomwa... |
| slefdel | Ransomware | 2 | Trojan:Win32/Slefdel is a heuristic detection identifying a specific, evasive behavior common in malware droppers and initial stagers: self-deletion (`T1070.004... |
| arkeistealer | Infostealer | 1 | Arkeistealer (classified in antivirus detection telemetry under designations including PWS:Win32/Arkeistealer, PWS.Win32.Arkeistealer, and Win32/Arkeistealer) i... |
| cleanlog | Trojan | 1 | Trojan:Win32/Cleanlog is a specialized defense evasion tool utilized by advanced attackers (often post-exploitation) to deliberately cover their tracks. Its exp... |
| vidar | Infostealer | 1 | Trojan:Win32/Vidar (commercially marketed as Vidar Stealer) is a prolific, commercially available information-stealing trojan first observed on underground Russ... |