Managed XDR

winupd.exe (DarkComet) — malware analysis report

File info

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

Environment

w10/x86 en

Hashes

SHA1
a378afd91e8ca0a526f1b603b1112bdddc248235
SHA256
aaa16516290a2599bca4501c4e645f9a04dd838a4d1ce2f92889d1ba389884a8
MD5
53248d84356ade3716eafdc88c5e698a

Malwares

  • DarkComet

Signatures

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another 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

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1027.002 packer_polymorphic: Creates a modified copy of itself
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
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
T1027.002 packer_vb: The executable file is packed using VB
T1480 system_default_lang_id_present: Checks the system language
T1070 stealth_window: A process created a hidden window

Discovery

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1082 recon_systeminfo: Collects system information (ipconfig, netstat, systeminfo, net)
T1016 system_network_configuration_discovery: System network configuration discovery detected

Collection

T1115 checks_clipboard: Monitors clipboard data

Other

yara_rules: Static rules
networkdyndns_checkip: Connects to a Dynamic DNS domain
static_pe_anomaly: The PE file structure contains anomalies
rat_fynloski: Fynloski/DarkComet indicators detected
creates_exe: Creates executable files in the file system
dns_without_resolve: DNS query without a response
suspicious_process: Spawns a suspicious process
executes_dropped_exe: Executes dropped exe files
process_crashed: One of the processes has failed
unexpected_exception: Unexpected exception
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
writes_data: Writes big amount of data to disk
pe_overlay: PE file contains overlay
suricata_alert: Malicious traffic detected

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