EVILNUM is fully capable backdoor that was first identified in 2018. EVILNUM is used by the APT group Evilnum which has the same name.[1][2]

ID: S0568
Platforms: Windows
Version: 1.0
Created: 28 January 2021
Last Modified: 19 January 2022

Techniques Used

Domain ID Name Use
Enterprise T1547 .001 Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

EVILNUM can achieve persistence through the Registry Run key.[1][2]

Enterprise T1041 Exfiltration Over C2 Channel

EVILNUM can upload files over the C2 channel from the infected host.[2]

Enterprise T1070 Indicator Removal

EVILNUM has a function called "DeleteLeftovers" to remove certain artifacts of the attack.[2]

.006 Timestomp

EVILNUM has changed the creation date of files.[2]

Enterprise T1105 Ingress Tool Transfer

EVILNUM can download and upload files to the victim's computer.[1][2]

Enterprise T1112 Modify Registry

EVILNUM can make modifications to the Regsitry for persistence.[2]

Enterprise T1518 .001 Software Discovery: Security Software Discovery

EVILNUM can search for anti-virus products on the system.[2]

Enterprise T1539 Steal Web Session Cookie

EVILNUM can harvest cookies and upload them to the C2 server.[2]

Enterprise T1218 .010 System Binary Proxy Execution: Regsvr32

EVILNUM can run a remote scriptlet that drops a file and executes it via regsvr32.exe.[1]

.011 System Binary Proxy Execution: Rundll32

EVILNUM can execute commands and scripts through rundll32.[2]

Enterprise T1082 System Information Discovery

EVILNUM can obtain the computer name from the victim's system.[2]

Enterprise T1033 System Owner/User Discovery

EVILNUM can obtain the username from the victim's machine.[2]

Enterprise T1102 .003 Web Service: One-Way Communication

EVILNUM has used a one-way communication method via GitLab and Digital Point to perform C2.[2]

Enterprise T1047 Windows Management Instrumentation

EVILNUM has used the Windows Management Instrumentation (WMI) tool to enumerate infected machines.[2]

Groups That Use This Software

ID Name References
G0120 Evilnum