Managed XDR

teamviewer.exe (Tinba) — malware analysis report

File info

Filename
teamviewer.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
4.3 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
8d365043767049d6fc7b750829b3f24aaa28c4df
SHA256
cb2d18b9c259ba7a45b9e4e9ec34ee62ece465c40dfe9e688c5e950079cb0cbd
MD5
e299a625abb2eb45eaae79617a766c96

Malwares

  • Tinba

Signatures

Execution

T1059.003 executes_dropped_cmd: Executes dropped batch files

Persistence

T1547 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1055.012 injection_runpe: Injects code into another process
T1547 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1574 dropper_dll: Creates DLL, which is then loaded into the process
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

T1055.012 injection_runpe: Injects code into another process
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1497.001 antivm_queries_computername: Retrieves the computer name
T1480 system_default_lang_id_present: Checks the system language
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
T1070 stealth_window: A process created a hidden window

Credential Access

T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_queries_computername: Retrieves the computer name
T1082 reads_csrss: Attempts to read csrss.exe memory

Command and Control

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

Other

yara_rules: Static rules
executes_dropped_exe: Executes dropped exe files
rat_teamviewer: TeamViewer indicators detected (registry or mutexes)
creates_in_windows: Creates files in the Windows directory
rat_teamviewer_files: TeamViewer indicators detected (files)
creates_exe: Creates executable files in the file system
create_process_failed: Could not start the process
http_file_not_found: Attempts to download EXE or DLL file but receives HTML with an error
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay

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