Managed XDR

word-embeddings-oleobject1.bin (Dharma, XWorm) — malware analysis report

File info

Filename
word-embeddings-oleobject1.bin
File type
Composite Document File V2 Document, Cannot read section info
File size
40.5 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
c42a65d2a2e6d460b414f1c727314c1a9e8ba967
SHA256
4ee98a9d758050fa87b5ed9f05d59fe0ecb3eebf995375826c954f60e07bf457
MD5
8a0c388c44940d28ae9d2cd37e4f3fef

Malwares

  • Dharma
  • XWorm

Signatures

Execution

T1047 has_wmi: Executes one or several WMI requests

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
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 unnamed_memory_regions: Code was executed in unnamed regions
T1562 modify_uac_prompt: Attempts to modify UAC pop-up window behavior
T1497.001 antivm_disk_size: Checks the amount of free disk space
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
T1497.001 antivm_queries_computername: Retrieves the computer name
T1070 stealth_window: A process created a hidden window

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1552 infostealer_mail: Collects personal data from local email clients
T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1082 has_wmi: Executes one or several WMI requests
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1518.001 wmi_check_av: Uses WMI to check for installed antivirus software
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1114 infostealer_mail: Collects personal data from local email clients
T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1115 set_clipboard_data: Sets data to clipboard

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Impact

T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies
T1486 modifies_files2: Cryptolocker indicators detected (100 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 100 or more files)
T1565.001 overwrites_firefox_settings: Modifies Mozilla Firefox settings
T1490 wbadmin_delete_backup: Removes system backup copies using wbadmin utility
T1486 ransomware_files: Ransomware indicators detected (creates keys and the instruction on how to unlock the files)
T1489 service_control_stop: Stops services via ControlService

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
ransomware_dharma: Detected Dharma ransomware
locker_taskmgr: Disables Windows Task Manager
ransomware_shadowcopy: Removes volume shadow copies
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
ransomware_bcdedit: Runs bcdedit commands specific to ransomware
critical_process: Makes the process critical to the system (the system shuts down when it's terminated)
cryptolocker_wallpaper: Ransomware indicators detected (changes the desktop wallpaper file)
creates_doc: Creates (office) documents in the file system
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
break_limit_exceeded: Warning: function calls limit has been exceeded
access_recyclebin: Manipulation with recyclebin detected
creates_in_programdata: Creates files in the ProgramData directory
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
open_winlogon_process: Trying to open winlogon process
dotnet_downloader_possible_network_problem: Dotnet program possibly has network problem

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