Managed XDR

svchost.exe (RedLine Stealer, Lockbit) — malware analysis report

File info

Filename
svchost.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
269 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
185311e52a66a79237b304cbc808157cb2bdb300
SHA256
1e6ecdb54224eea50476be03d5a48083deae15301f26ba3519e0c0a5eb77b1f4
MD5
6cbf9142be191fa8b84f590adf75b2cc

Malwares

  • RedLine Stealer
  • Lockbit

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

T1562.001 disables_security: Disables Windows Security options
T1497.001 antivm_generic_services: Enumerates services, possibly for anti-virtualization
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1036 system_filename: Created a file named as a common system file
T1562 firewall_disable: Disables Firewall
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

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files
T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497.001 antivm_generic_services: Enumerates services, possibly for anti-virtualization
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality

Collection

T1113 screenshot_file: Possibly, makes a screenshot and saves it to a file

Command and Control

T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

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 wbadmin_delete_backup: Removes system backup copies using wbadmin utility
T1486 ransomware_message: Ransomware indicators detected (possible ransom message creation)
T1486 ransomware_files: Ransomware indicators detected Lockbit (creates keys and the instruction on how to unlock the files)
T1486 mass_data_encryption: Encrypts data using the same key (possible ransomware behaviour)
T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies

Other

yara_rules: Static rules
ransomware_shadowcopy: Removes volume shadow copies
ransomware_bcdedit: Runs bcdedit commands specific to ransomware
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
dns_without_resolve: DNS query without a response
suspicious_process: Spawns a suspicious process
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
access_recyclebin: Manipulation with recyclebin detected
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
open_winlogon_process: Trying to open winlogon process

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