Managed XDR

vtdl_ovccb1dk — malware analysis report

File info

Filename
vtdl_ovccb1dk
File type
RAR archive data, v5
File size
17.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
df38a27b39e3d46a68817a3ef05dd5271baccd1b
SHA256
84b0f1e5c8fbc93d657ccc941a9f24269bdc8171bc601097900ed367f63b52d7
MD5
18a06e99d0e2a16ca1a950967c65944a

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Persistence

T1546 classes_autorun: Registers new extension and adds execution command

Privilege Escalation

T1546 classes_autorun: Registers new extension and adds execution command
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

T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
T1497.001 antivm_generic_cpu: Checks the CPU name, possibly for anti-virtualization
T1497.001 antivm_generic_bios: Checks the BIOS version, possibly for anti-virtualization
T1497.001 antisandbox_productid: Obtains Windows ProductID, probably to fingerprint a sandbox
T1497.001 antivm_generic_disk: Checks information on disk, possibly for anti-virtualization or checking privileges
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_vmprotect: Executable file is likely compressed using VMProtect
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1480 system_default_lang_id_present: Checks the system language
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
T1497.001 antivm_generic_cpu: Checks the CPU name, possibly for anti-virtualization
T1497.001 antivm_generic_bios: Checks the BIOS version, possibly for anti-virtualization
T1497.001 antisandbox_productid: Obtains Windows ProductID, probably to fingerprint a sandbox
T1497.001 antivm_generic_disk: Checks information on disk, possibly for anti-virtualization or checking privileges
T1082 antivm_generic_disk: Checks information on disk, possibly for anti-virtualization or checking privileges
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
unexpected_exception: Unexpected exception
valid_authenticode: The digital signature has been verified
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay
many_files_in_archive: The archive contains more than 5 files