Managed XDR

2c831c73-f56f-4603-3f7...-b4c6-fde4b7722705.eml (Remcos) — malware analysis report

File info

Filename
2c831c73-f56f-4603-3f7e-08dcb5147378-a563f36a-e428-1d99-b4c6-fde4b7722705.eml
File type
RFC 822 mail, ASCII text, with CRLF line terminators
File size
28.4 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
178853087b078b0ef9b8eab128ad987cffdcaa1f
SHA256
f987b50ea91e74f3e0928eb41dbb5c7cc2b07643a1e020ebe582188ea511d6f7
MD5
59bdac9fc601167cd370fd62207752f7

Malwares

  • Remcos

Signatures

Execution

T1059 autoit: AutoIt script execution detected
T1204.002 mimics_extension: Attempts to mimic the file extension
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1134.004 ppid_spoofing: Parent pid spoofing detected
T1055 injection_failed: The attempt to inject into a process has failed
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

T1134.004 ppid_spoofing: Parent pid spoofing detected
T1036 mimics_extension: Attempts to mimic the file extension
T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
T1140 unpacking_utilities: Uses Windows utilities to unpack data
T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
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
T1480 system_default_lang_id_present: Checks the system language
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1055 injection_failed: The attempt to inject into a process has failed
T1070 stealth_window: A process created a hidden window

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files
T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1082 reads_csrss: Attempts to read csrss.exe memory

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1115 checks_clipboard: Monitors clipboard data

Command and Control

T1568.002 dga_domains: Connects to DGA domains
T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl
T1102.003 references_google: Contains links to cloud services of Google (potentially for malicious payload delivery)

Other

yara_rules: Static rules
ce_info: Remcos Configuration Data found
creates_many_processes: Spawns a lot of processes (over 70)
unpacker_wrong_base: Possibly, an error occured in the file unpacker
drops_interpreter: Creates intrepreter binary file
creates_in_windows: Creates files in the Windows directory
creates_exe: Creates executable files in the file system
dns_without_resolve: DNS query without a response
executes_dropped_exe: Executes dropped exe files
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
creates_in_programdata: Creates files in the ProgramData directory
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay

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