Managed XDR

cve-2021-40444-master.zip — malware analysis report

File info

Filename
cve-2021-40444-master.zip
File type
Zip archive data, at least v1.0 to extract
File size
1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
1fc83dfb06e393905b14332ecbf1c7aa4ce6a222
SHA256
f69f3540781498c5a0194d4a9789e1b2fbeaf42251edfed8b69a27a937acba75
MD5
e2eebac31f95c3642ac415fefc726240

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1203 suspicious_msapp: Suspicious execution of Microsoft Application (possible exploitation)
T1059.003 suspicious_process: Spawns a suspicious process
T1059.005 obfuscated_vbs: Detected obfuscated VBS

Privilege Escalation

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

T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
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

Discovery

T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1135 server_share_info: Retrieves information about each shared resource on a server

Other

yara_rules: Static rules
unexpected_exception: Unexpected exception
create_rpc_bindings: Creates RPC connection
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
pe_overlay: PE file contains overlay
many_files_in_archive: The archive contains more than 5 files