Managed XDR

book1.xlsm (Cobalt Strike) — malware analysis report

File info

Filename
book1.xlsm
File type
Microsoft Excel 2007+
File size
15.3 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
0528aca5190607bd90c8e8fcf6ca233c259daf80
SHA256
10dd619c7c184598e0915ef4ccc0ca34aee8f9f5ccb55a620dceab60cbb069a6
MD5
f203018a38cc2af9f50ac14a5d853407

Malwares

  • Cobalt Strike

Signatures

Execution

T1203 office_exploit_crash: Microsoft Office process crashes (failed exploitation of a vulnerability is possible)
T1064 office_macros_suspicious: Document contains suspicious macro
T1203 office_start_thread: Allocates memory and starts a thread inside an office application
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Privilege Escalation

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

T1064 office_macros_suspicious: Document contains suspicious macro
T1134 opens_process_token: Opens the access token associated with a process
T1055 injection_failed: The attempt to inject into a process has failed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Command and Control

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

Other

shellcode_wininet: Wininet-shellcode behavior detected
network_bind: Starts servers listening at None
creates_suspended_process: Creates suspended process
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
yara_rules: Static rules

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