Managed XDR

umbrellaloader.rar — malware analysis report

File info

Filename
umbrellaloader.rar
File type
RAR archive data, v5
File size
31.1 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
a9f9da6f78df807d4c0da7177d07a5dc667527f0
SHA256
4e4a8aece5e9fead7e5786c759d15fda88c7f97917da94f13d07720d2d636083
MD5
ea86c74c495e2169f5dba2d489e44f3e

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
T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
T1497.001 antivm_firmware: Attempts to detect VM by firmware
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
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_firmware: Attempts to detect VM by firmware
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1016 get_hostname: Attempts to get hostname
T1082 checks_firmware: Attempts to read firmware information (potentially for evasion)

Command and Control

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

Other

static_pe_anomaly: The PE file structure contains anomalies
modifies_certs: Attempts to generate or modify system certificates
process_crashed: One of the processes has failed
static_pe_duplicate_sections: The PE file structure contains anomalies: duplicate section names
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
valid_authenticode: The digital signature has been verified
require_administrator: Requests administrator privileges
dotnet_embeded_dependencies_by_costura: Dotnet program has embedded dependencies by Costura
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
pe_overlay: PE file contains overlay
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
yara_rules: Static rules