Managed XDR

2026-07-31_0dcf463467f...cos_smoke-loader_vidar (njRAT) — malware analysis report

File info

Filename
2026-07-31_0dcf463467fc0d1ecf43d03d667d73a1_amadey_elex_glassworm_hellokitty_icedid_luca-stealer_njrat_ransomhub_remcos_smoke-loader_vidar
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
11.1 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
3063e3354638b22db80123698f364adf8b00a14d
SHA256
9da0e99c1a672599e6d26eaa683dbf69de757ab9a120be8786eb9003f4cc8a91
MD5
0dcf463467fc0d1ecf43d03d667d73a1

Malwares

  • njRAT

Signatures

Persistence

T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
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

T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
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

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
njrat: NJRat indicators detected
network_bind: Starts servers listening at None
creates_exe: Creates executable files in the file system
modifies_certs: Attempts to generate or modify system certificates
require_administrator: Requests administrator privileges
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
message_box: Displays a message
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay

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