Managed XDR

20250520_fp_100_14.eml (NanoCore) — malware analysis report

File info

Filename
20250520_fp_100_14.eml
File type
HTML document, UTF-8 Unicode text
File size
980.8 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
5fa9bb103804e0f22e41aa317f5b7ded5c239b61
SHA256
73262c1bb2c9491f908ccb523e3b68a4c3e1c560cde04226bed9313d71af7951
MD5
29a715217b25104ca8753ae1f38b23ad

Malwares

  • NanoCore

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list
T1070 stealth_window: A process created a hidden window

Discovery

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1518 locates_browser: Attempts to identify where browsers are installed

Other

yara_rules: Static rules
steganographic_png: Possible malicious steganographic PNG
rat_nanocore: Nanocore RAT behavioural patterns detected
dead_host: Connects to IP addresses that do not respond to requests
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
checktokenmembership: Checks user token with CheckTokenMembership call
dotnet_suspicious_module_name: Dotnet program has suspicious module name

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