Managed XDR

c-windows-system32-ybzrhcn7x.dll (Stealc, Mars Stealer) — malware analysis report

File info

Filename
c-windows-system32-ybzrhcn7x.dll
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
209.5 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
84db03019ce9e0d84fa409a79ed23131ce60146e
SHA256
0ca7e97f688770f19fb726076d916f4dfeafb21cb8fa6b082d599bcc81c6d8c6
MD5
feb9288d05f4484a9e90b6861de5c6a6

Malwares

  • Stealc
  • Mars Stealer

Signatures

Privilege Escalation

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 unnamed_memory_regions: Code was executed in unnamed regions
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Command and Control

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

Other

yara_rules: Static rules
network_bind: Starts servers listening at None
has_pdb: This executable file has a PDB path
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services

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