Managed XDR

avast.exe (Symmi, Dorkbot) — malware analysis report

File info

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

Environment

win7/x86 en

Hashes

SHA1
7fa8778f233bc691220f33951da2881cb8983663
SHA256
3a6346ae6290fcaf141b140fd728678aa68ce657ef1ec9e35940c2a1afdea529
MD5
6b2ce4c9266796a9332dbf1bccb700c8

Malwares

  • Symmi
  • Dorkbot

Signatures

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1179 hooked_api: Intercepts API functions

Privilege Escalation

T1055.012 injection_runpe: Injects code into another process
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1179 hooked_api: Intercepts API functions
T1055 sets_debug_registers: Sets debug registers for a thread in a different process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 sets_privilegies_via_rtladjustprivilege: Sets process privilege via RtlAdjustPrivilege
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
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1070.004 deletes_self: Moves to different location or removes the original executable file
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1055 sets_debug_registers: Sets debug registers for a thread in a different process
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 sets_privilegies_via_rtladjustprivilege: Sets process privilege via RtlAdjustPrivilege
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1480 system_default_lang_id_present: Checks the system language

Credential Access

T1179 hooked_api: Intercepts API functions
T1552 cookie_files: Accesses cookie files
T1555.003 cookie_files: Accesses cookie files

Discovery

T1057 process_interest: Enumerates processes
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1135 server_share_info: Retrieves information about each shared resource on a server

Command and Control

T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
suspicious_process_network: Unusual process network activity detected
suspicious_process: Spawns a suspicious process
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay
open_winlogon_process: Trying to open winlogon process

Related reports

Managed XDR