Managed XDR

212070de-7677-c8ae-0223-a37f1dcba2fb.eml (Remcos) — malware analysis report

File info

Filename
212070de-7677-c8ae-0223-a37f1dcba2fb.eml
File type
RFC 822 mail, ASCII text, with CRLF line terminators
File size
1.2 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
b5d937709f26b97f62a2f8703a7845bdf5bd0c06
SHA256
5fc60535cbaccd74273ab22ce572fb347fcb5d4f7365716027bf053586a3c2bf
MD5
ffae911d4928b367933bb6b4ef44927a

Malwares

  • Remcos

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another 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

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1562 dep_disable: Disables DEP
T1562 disables_uac: Disable UAC
T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_queries_computername: Retrieves the computer name
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list
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
T1070 stealth_window: A process created a hidden window

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Command and Control

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

Other

yara_rules: Static rules
ce_info: Remcos Configuration Data found
networkdyndns_checkip: Connects to a Dynamic DNS domain
static_pe_anomaly: The PE file structure contains anomalies
unpacker_wrong_base: Possibly, an error occured in the file unpacker
pe_in_bcryptdecrypt: PE found in BCryptDecrypt function
runs_utility_without_cmdline: Runs system utility without arguments (non-typical usage)
dead_host: Connects to IP addresses that do not respond to requests
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
creates_suspended_process: Creates suspended process
dotnet_obfuscated: Dotnet program is potentially obfuscated
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
pe_overlay: PE file contains overlay
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
dotnet_suspicious_module_name: Dotnet program has suspicious module name

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