Managed XDR

c-users-user-appdata-l...44b9ac1830abb6a5bb0b2c (Conti) — malware analysis report

File info

Filename
c-users-user-appdata-local-temp-ymnkxc2u.nkl-exe.ransomware.conti-77-41-97-7741970ab53794dfd0b2789...facf262e20744b9ac1830abb6a5bb0b2c-7741970ab53794dfd0b27891a22edd2facf262e20744b9ac1830abb6a5bb0b2c
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
185 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
20967bd64eabb8dddbaa711c85c7bd2f3146ee83
SHA256
7741970ab53794dfd0b27891a22edd2facf262e20744b9ac1830abb6a5bb0b2c
MD5
304745b78d1caf12316eb73955eb175f

Malwares

  • Conti

Signatures

Execution

T1047 has_wmi: Executes one or several WMI requests

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_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Credential Access

T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets
T1552 infostealer_mail: Collects personal data from local email clients
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1057 process_interest: Enumerates processes
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1016 get_hostname: Attempts to get hostname

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Impact

T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 ransomware_message: Ransomware indicators detected (possible ransom message creation)
T1486 ransomware_files: Ransomware indicators detected Conti (creates keys and the instruction on how to unlock the files)
T1486 ransomware_files_2: Ransomware(s) Conti indicators detected (creates keys and the instruction on how to unlock the files)
T1486 mass_data_encryption: Encrypts data using the same key (possible ransomware behavior)

Other

yara_rules: Static rules
conti_mutexes: Conti indicators (mutexes)
create_rpc_bindings: Creates RPC connection
creates_in_programdata: Creates files in the ProgramData directory
suspicious_network_port: Performs TCP or UDP request to non-standard port

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