Managed XDR

c-programdata-microsof...ms-startup-winhost.exe (Dharma) — malware analysis report

File info

Filename
c-programdata-microsoft-windows-start-menu-programs-startup-winhost.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
92.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
9a43822d62b0b5d5c1b2605883104b6e899ffec6
SHA256
d0752eaf5e90506be0d3c697c273e92fb6e117116b1ca3a8bbd40ef3f1c914d7
MD5
da1280b1c4cf073505369273f99c182b

Malwares

  • Dharma

Signatures

Execution

T1059.003 suspicious_cmd_process: Cmd.exe without commandline launches a new process

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 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1564.001 stealth_file: Creates hidden or system files
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_queries_computername: Retrieves the computer name
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1055 injection_failed: The attempt to inject into a process has failed

Discovery

T1057 process_interest: Enumerates processes
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1074.001 access_recyclebin: Manipulation with recyclebin detected

Impact

T1561 wiper_zeroed_bytes: Overwrites multiple files with zero bytes (hex 00)
T1486 modifies_files: Cryptolocker indicators detected (renamed 50 or more files)
T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies

Other

yara_rules: Static rules
ransomware_dharma: Detected Dharma ransomware
ransomware_shadowcopy: Removes volume shadow copies
creates_in_windows: Creates files in the Windows directory
runs_utility_without_cmdline: Runs system utility without arguments (non-typical usage)
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path

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