Managed XDR

ar7b42.xar — malware analysis report

File info

Filename
ar7b42.xar
File type
Microsoft Excel 2007+
File size
8.5 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
43018bbb212760f43c18b39833680b75c1d6d479
SHA256
0d07c482c064aec5de23fe916297e3f2ddceaf980c5d320f18e35fec4c3e5218
MD5
dd6007544ac42aaa40c09f2ab177e8b1

Signatures

Execution

T1059.001 suspicious_powershell: Suspicious document behaviour (creates powershell process)
T1203 office_exploit_creates_cmd: The document exhibits suspicious behaviour (creates a cmd.exe process)
T1203 suspicious_msapp: Suspicious execution of Microsoft Application (possible exploitation)
T1059.001 suspicious_process: Spawns a suspicious process
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)

Persistence

T1176 browser_addon: Installs browser extension

Defense Evasion

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1552 cookie_files: Accesses cookie files

Discovery

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 locates_browser: Attempts to identify where browsers are installed

Other

accesses_mailslot: Performs a Mailslot ping, possibly used to get Domain Controller information
runs_utility_without_cmdline: Runs system utility without arguments (non-typical usage)
creates_suspended_process: Creates suspended process
test_check_service: Starts services
writes_data: Writes big amount of data to disk
dotnet_suspicious_cultureidentifier: Dotnet program contains invalid CultureIdentifier