Managed XDR

calc.exe (Virut) — malware analysis report

File info

Filename
calc.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
139.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
d25708074640c9e534b128ffddabc1ccb866a4fa
SHA256
af6ad70a5d98a83e4e19636ac97a621ad6bec77a083e3108fbd84899ba26c7fd
MD5
6c903495254c67444eb6206908518ef3

Malwares

  • Virut

Signatures

Privilege Escalation

T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
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 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.012 injection_runpe: Injects code into another process
T1562.004 bypass_firewall: Changes local firewall configuration and policies
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
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
T1027.002 packer_entropy: Probably contains compressed or encrypted data

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1057 process_interest: Enumerates processes
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Impact

T1565 modifies_hostfile: Writes data to system hosts file

Other

yara_rules: Static rules
static_pe_anomaly: The PE file structure contains anomalies
suspicious_process_network: Unusual process network activity detected
dns_without_resolve: DNS query without a response
dead_host: Connects to IP addresses that do not respond to requests
has_pdb: This executable file has a PDB path
open_winlogon_process: Trying to open winlogon process
suricata_alert: Malicious traffic detected

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