Managed XDR

20250409_90_ha_fp.eml (CloudEyE, Remcos) — malware analysis report

File info

Filename
20250409_90_ha_fp.eml
File type
SMTP mail, ASCII text, with very long lines
File size
976.7 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
267252dbf5e12071830d0672833801be12b15941
SHA256
a0ebf98c834dbbf16b84c8fed6cfabf47f33e0ac1ef37aa403496a9183debf29
MD5
1e31ca2f4ec722af304c18790313850b

Malwares

  • CloudEyE
  • Remcos

Signatures

Execution

T1059 nsis_suspicious_filenames: Nsis contains files with suspicious names
T1106 susp_callbacks: Suspicious usage of some WinAPI with callbacks

Persistence

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

Privilege Escalation

T1055.012 injection_runpe: Injects code into another process
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1574 dropper_dll: Creates DLL, which is then loaded into the process
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

T1055.012 injection_runpe: Injects code into another process
T1027.002 guloader_behaviour: Cloudeye/GuLoader specific behaviour has been detected
T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
T1562 dep_disable: Disables DEP
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1027.002 nsis_archive: One of the packages is NSIS archive
T1027.002 nsis_suspicious_filenames: Nsis contains files with suspicious names
T1480 system_default_lang_id_present: Checks the system language

Credential Access

T1552 cookie_files: Accesses cookie files
T1555.003 cookie_files: Accesses cookie files

Discovery

T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread

Command and Control

T1102.003 cloud_google: Connects to cloud services of Google (potentially for malicious payload delivery)
T1071.001 network_http: Performs HTTP requests
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl

Other

yara_rules: Static rules
ce_info: Remcos Configuration Data found
creates_exe: Creates executable files in the file system
modifies_certs: Attempts to generate or modify system certificates
dead_host: Connects to IP addresses that do not respond to requests
unnamed_region_exception_handler: Creates an exception handler in an unnamed region
unexpected_exception: Unexpected exception
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay

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