Managed XDR

vtdl_1738454700_1eduf57h (Bifrose) — malware analysis report

File info

Filename
vtdl_1738454700_1eduf57h
File type
PE32 executable (GUI) Intel 80386, for MS Windows, MS CAB-Installer self-extracting archive
File size
201 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
e59488730521cec401b3ccb3982e4c93b02cfa6f
SHA256
85e333c02db7c2ee744c076b6920992092a39c5fd7868c3df8ad4c0313f3fb13
MD5
dde2cc9609c8f3e2e3dd705843e6d9a4

Malwares

  • Bifrose

Signatures

Persistence

T1547 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

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
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
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
T1562 dep_disable: Disables DEP
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
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
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1057 process_interest: Enumerates processes
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Other

yara_rules: Static rules
rat_bifrose: Bifrose Trojan indicators detected
creates_exe: Creates executable files in the file system
unnamed_region_exception_handler: Creates an exception handler in an unnamed region
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
executes_dropped_exe: Executes dropped exe files

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