Managed XDR

fw-re-urgent-request-f...tion-no-9001223500.eml (Remcos) — malware analysis report

File info

Filename
fw-re-urgent-request-for-quotation-no-9001223500.eml
File type
HTML document, ASCII text, with very long lines, with CRLF line terminators
File size
3.6 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
f424b808d0f27d65e699b0a2992e4588b5eab5cb
SHA256
4404b6744875a49a4c42ddbab6fb5e48236ddb39d0ed0eaca6b03ebefb1dfb3b
MD5
6bbb90bd1ef8163ffbc4a7ddf47d684a

Malwares

  • Remcos

Signatures

Execution

T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1059 wscript_info_discovery: Collects info about system with Wscript.Shell
T1059.005 bad_vbs: Suspicious VBScript file

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
T1055.002 inject_write_pe: Writes PE file to another process's memory
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
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
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
T1055 injection_failed: The attempt to inject into a process has failed

Credential Access

T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1016.001 system_network_configuration_discovery: System network configuration discovery detected
T1082 reads_csrss: Attempts to read csrss.exe memory
T1033 wscript_info_discovery: Collects info about system with Wscript.Shell

Other

yara_rules: Static rules
executes_dropped_exe: Executes dropped exe files
ce_info: Remcos Configuration Data found
creates_exe: Creates executable files in the file system
page_noaccess: Disables access to a memory region
no_graphical_activity: No graphic activity
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
get_policy_info: Retrieves information about a Policy object
checktokenmembership: Checks user token with CheckTokenMembership call

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