Managed XDR

dropmefiles_cjf89.zip (TriangleDB, Agent Tesla, Egregor, Cobalt Strike, Lockbit, HermeticWiper, ReverseRAT, Masad Stealer, LaZagne, DarkSide, NetWire, Follina, ALPHV, TrickBot, PowerLess) — malware analysis report

File info

Filename
dropmefiles_cjf89.zip
File type
Zip archive data, at least v1.0 to extract
File size
37 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
29e6c97434f8e5fd07a8f014f7faec3159a092cb
SHA256
5e3d59b21eea21a47bf25cd4d827b125aeb18ef3ecb0de4e84589b5cff1d8450
MD5
8031ab6ba0e70427777880447a85f820

Malwares

  • TriangleDB
  • Agent Tesla
  • Egregor
  • Cobalt Strike
  • Lockbit
  • HermeticWiper
  • ReverseRAT
  • Masad Stealer
  • LaZagne
  • DarkSide
  • NetWire
  • Follina
  • ALPHV
  • TrickBot
  • PowerLess

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 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_queries_computername: Retrieves the computer name
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
T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1057 process_interest: Enumerates processes
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_queries_computername: Retrieves the computer name

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
open_winlogon_process: Trying to open winlogon process
many_files_in_archive: The archive contains more than 5 files

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