Managed XDR

wextract.exe-.mui (Amadey, LummaC2, Symmi) — malware analysis report

File info

Filename
wextract.exe-.mui
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
2.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
8e04c2933ec37bd54edad33c5625751de2f3f007
SHA256
7642c6fe86cd9289576abd09793f3a5fd5eb3ccfa58a4eadc6e65779a2a8148d
MD5
84c778f0f25ea12969aa0d0b6ab97d19

Malwares

  • Amadey
  • LummaC2
  • Symmi

Signatures

Privilege Escalation

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_themida: Themida packer signatures detected
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1480 system_default_lang_id_present: Checks the system language
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1070 stealth_window: A process created a hidden window

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1518.001 antiav_detectfile: Attempts to detect installed antiviruses by a certain directory
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization

Command and Control

T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
creates_in_windows: Creates files in the Windows directory
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
unexpected_exception: Unexpected exception
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
message_box: Displays a message
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk

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