Managed XDR

c-programdata-ac419104...19668745c-tnqbjfsp.exe (BlackCat) — malware analysis report

File info

Filename
c-programdata-ac419104-30d0-1365-baaa-bcc19668745c-tnqbjfsp.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
104 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
aae393eee3c085ceb2c4e7f0dec8e6489157960d
SHA256
9b03917052bf459df1012fe2c04421cd059aa54ae91f380828b919614fcba45d
MD5
ed759a0635ed6c4ebe920adc4500cdbe

Malwares

  • BlackCat

Signatures

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

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_queries_computername: Retrieves the computer name
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

T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets

Discovery

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 process_interest: Enumerates processes
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1497.001 antivm_queries_computername: Retrieves the computer name

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
T1486 ransomware_message: Ransomware indicators detected (possible ransom message creation)
T1489 service_control_stop: Stops services via ControlService

Other

yara_rules: Static rules
ransomware_blackcat: Detected BlackCat ransomware
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
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

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