Managed XDR

c-users-user-appdata-l...-3582-490-software.exe (Neshta, BlackMatter) — malware analysis report

File info

Filename
c-users-user-appdata-local-temp-3582-490-software.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
2.2 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
ea7876e531d85216be31916db9cf4fcb7bfa6284
SHA256
e14f5eded2a57f4f886bdb814d55bfd0038b0e6a05b270f99541745ada9a9bff
MD5
3e84452db18e79cdd52f6a50bb3efea5

Malwares

  • Neshta
  • BlackMatter

Signatures

Execution

T1047 has_wmi: Executes one or several WMI requests

Persistence

T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key

Privilege Escalation

T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
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

T1574.011 persistence_services: Modifies Services registry key
T1036 system_filename: Created a file named as a common system file
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 infostealer_mail: Collects personal data from local email clients
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1552 cookie_files: Accesses cookie files

Discovery

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

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)
T1561 wiper_zeroed_bytes: Overwrites multiple files with zero bytes (hex 00)
T1489 stops_service: Stops Windows services
T1486 modifies_files: Cryptolocker indicators detected (renamed 100 or more files)
T1486 ransomware_files: Ransomware indicators detected BlackMatter (creates keys and the instruction on how to unlock the files)

Other

yara_rules: Static rules
creates_many_processes: Spawns a lot of processes (over 70)
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
creates_in_windows: Creates files in the Windows directory
unsigned_driver_drop: Sample is not signed and drops a device driver
no_graphical_activity: No graphic activity
break_limit_exceeded: Warning: function calls limit has been exceeded
get_policy_info: Retrieves information about a Policy object
neshta_mutexes: Neshta is detected: mutex
pe_overlay: PE file contains overlay

Related reports