Managed XDR

xu-zong-jie-dai-de-fang-jian-bu-zhi-.zip (RedCurl) — malware analysis report

File info

Filename
xu-zong-jie-dai-de-fang-jian-bu-zhi-.zip
File type
Zip archive data, at least v2.0 to extract
File size
10.7 MB
First seen
Last seen

Environment

win7/x64 en

Hashes

SHA1
4c39c784be2b7ecd8d909f0533bc307ff6005108
SHA256
36faa29dbf2e6b568da9d6de24cb5bb4a726367d9e9318b79be271a37aac0cd7
MD5
e69508785327066a643bbab99144cec0

Malwares

  • RedCurl

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059.005 obfuscated_vbe: Detected obfuscated VBE script
T1569.002 persistence_service: Starts newly created service
T1047 has_wmi: Executes one or several WMI requests
T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1059.005 bad_vbs: Suspicious VBScript file

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
T1543.003 creates_service: Creates a service
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.012 injection_runpe: Injects code into another process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
T1543.003 creates_service: Creates a service
T1055 injection_failed: The attempt to inject into a process has failed
T1574 dropper_dll: Creates DLL, which is then loaded into the 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 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.012 injection_runpe: Injects code into another process
T1027 obfuscated_vbe: Detected obfuscated VBE script
T1112 creates_largekey: Saves very large data in the registry, can be used to save the configuration or body of the malware
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
T1574.011 persistence_services: Modifies Services registry key
T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027 obfuscated_vbs: Detected obfuscated VBS
T1055 injection_failed: The attempt to inject into a process has failed
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1480 system_default_lang_id_present: Checks the system language
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
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 pidbruteforce: Enumerates processes using PID Bruteforce
T1057 has_wmi: Executes one or several WMI requests
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1082 reads_csrss: Attempts to read csrss.exe memory

Collection

T1115 checks_clipboard: Monitors clipboard data
T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Impact

T1489 stops_service: Stops Windows services
T1489 service_control_stop: Stops services via ControlService

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
executes_dropped_exe: Executes dropped exe files
redcurl_extractor: Specific to RedCurl.Extractor behaviour has been detected
creates_exe: Creates executable files in the file system
page_noaccess: Disables access to a memory region
suspicious_process: Spawns a suspicious process
only_exec_in_archive: The archive contains only an executable file
unsigned_driver_drop: Sample is not signed and drops a device driver
driver_load: Loads a driver
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
message_box: Displays a message
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card
pe_overlay: PE file contains overlay
open_winlogon_process: Trying to open winlogon process

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