Managed XDR

c-windows-8nwh3cmm3.exe (BlackMatter, Lockbit) — malware analysis report

File info

Filename
c-windows-8nwh3cmm3.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
File size
174 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
a0344538d997f7416268c7528e0d3c2c3ed601a2
SHA256
939a2d7a3f22ed9ca4bf0ad2937d3efc9fc47f0392861198d5732893bed26e77
MD5
107658d39cb40cf9a779ebc60793a093

Malwares

  • BlackMatter
  • Lockbit

Signatures

Execution

T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Privilege Escalation

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
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
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_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

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1082 has_wmi: Executes one or several WMI requests
T1057 has_wmi: Executes one or several WMI requests
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
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services

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