Managed XDR

vtdl_b4exp4b3 (LummaC2, Tinba) — malware analysis report

File info

Filename
vtdl_b4exp4b3
File type
Zip archive data, at least v2.0 to extract
File size
5.3 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
4350db6e9c817027998ec69132906ec347aa9e9f
SHA256
3725ddd973e3c4be7d992529ab4b54db53f545ea06144c22817b4765d8dbe6d5
MD5
394258e6b76556224742f66f598141bb

Malwares

  • LummaC2
  • Tinba

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
T1055 injection_runpe_2: Executes injected code in another 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

T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
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
T1055 injection_runpe_2: Executes injected code in another process
T1027.002 packer_vmprotect: Executable file is likely compressed using VMProtect
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
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

T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Command and Control

T1568.002 dga_domains: Connects to DGA domains
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
dns_tld_pw: Connects to TLD .PW, possibly malware
suspicious_process_network: Unusual process network activity detected
dns_without_resolve: DNS query without a response
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
dotnet_obfuscated: Dotnet program is potentially obfuscated
checktokenmembership: Checks user token with CheckTokenMembership call
dotnet_use_suspicious_functions: Dotnet program potentially uses suspicious functions/modules

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