Managed XDR

vtdl_1748759736_h41ykoy6 (Nymeria) — malware analysis report

File info

Filename
vtdl_1748759736_h41ykoy6
File type
PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
File size
1.6 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
43aa6ed16c4bfb968e1d0e429762cfab1145fa6b
SHA256
a6adb25e77eef8450d5a47c556fc230669563aa818bdfdffc268517d8b8c1986
MD5
2086cf728c1cb813569c6ab09ec5c090

Malwares

  • Nymeria

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059 autoit: AutoIt script execution detected
T1106 susp_callbacks: Suspicious usage of some WinAPI with callbacks
T1059 autoit_suspicious_script: Autoit contains suspicious script
T1059 nsis_suspicious_filenames: Nsis contains files with suspicious names
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1574 dropper_dll: Creates DLL, which is then loaded into the process
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

T1027.002 packer_upx: The executable file is compressed using UPX
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 nsis_archive: One of the packages is NSIS archive
T1027.002 nsis_suspicious_filenames: Nsis contains files with suspicious names
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1070 stealth_window: A process created a hidden window
T1480 system_default_lang_id_present: Checks the system language
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Discovery

T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1082 reads_csrss: Attempts to read csrss.exe memory

Other

yara_rules: Static rules
no_graphical_activity: No graphic activity
message_box: Displays a message
error_drawtext: An error occured while executing the file
creates_exe: Creates executable files in the file system
get_policy_info: Retrieves information about a Policy object
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay

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