Managed XDR

vtdl_1742124221_ca229piv (Mailto, Sodinokibi) — malware analysis report

File info

Filename
vtdl_1742124221_ca229piv
File type
PE32+ executable (console) x86-64, for MS Windows
File size
2.6 MB
First seen
Last seen

Environment

win7/x64 en

Hashes

SHA1
ec910e2690a92fa71c4d250ac161a65bc27ce4e0
SHA256
d182c24cc63107a2920185c97fb96a87d8934639da0c44766930aa99f5248b63
MD5
de28787711087ccf3b69d702ffd4bd93

Malwares

  • Mailto
  • Sodinokibi

Signatures

Execution

T1059.003 executes_dropped_cmd: Executes dropped batch files
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
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

Credential Access

T1552 infostealer_mail: Collects personal data from local email clients
T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets

Discovery

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)
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1518 locates_browser: Attempts to identify where browsers are installed
T1135 server_share_info: Retrieves information about each shared resource on a server
T1497.001 antivm_queries_computername: Retrieves the computer name
T1082 reads_csrss: Attempts to read csrss.exe memory

Collection

T1114 infostealer_mail: Collects personal data from local email clients
T1074.001 access_recyclebin: Manipulation with recyclebin detected

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies
T1486 ransomware_message: Ransomware indicators detected (possible ransom message creation)
T1486 ransomware_files: Ransomware indicators detected Mailto (creates keys and the instruction on how to unlock the files)

Other

yara_rules: Static rules
ce_info: REvil note Configuration Data found
revil: Ransomware REvil indicators detected
ransomware_shadowcopy: Removes volume shadow copies
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
interface_enum_connections: IEnumConnections interface quering is detected
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
open_winlogon_process: Trying to open winlogon process

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