Managed XDR

jaffacakes118_6c1245be...d23f91d6a2179bf8e1a32a (Sodinokibi, REvil) — malware analysis report

File info

Filename
jaffacakes118_6c1245be0cacd3a2c296aeac93bd3a95debfe1497fd23f91d6a2179bf8e1a32a
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
561.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
40717d8266cf429ddc7df3a29248ef3bc8678a44
SHA256
6c1245be0cacd3a2c296aeac93bd3a95debfe1497fd23f91d6a2179bf8e1a32a
MD5
ea5d24b9bdfb7ea892b4ff16bc2c9d42

Malwares

  • Sodinokibi
  • REvil

Signatures

Privilege Escalation

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

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name
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
T1027.001 static_overlay_padding: Overlay contents padding

Credential Access

T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets
T1552 infostealer_mail: Collects personal data from local email clients
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

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1113 screenshot_file: Possibly, makes a screenshot and saves it to a file
T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

T1568.002 dga_domains: Connects to DGA domains
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Impact

T1486 modifies_files2: Cryptolocker indicators detected (100 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 100 or more files)
T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies
T1486 ransomware_files: Ransomware indicators detected REvil (creates keys and the instruction on how to unlock the files)

Other

yara_rules: Static rules
ce_info: REvil note, REvil config Configuration Data found
revil: Ransomware REvil indicators detected
ransomware_shadowcopy: Removes volume shadow copies
static_pe_anomaly: The PE file structure contains anomalies
ransomware_bcdedit: Runs bcdedit commands specific to ransomware
modifies_certs: Attempts to generate or modify system certificates
cryptolocker_wallpaper: Ransomware indicators detected (changes the desktop wallpaper file)
dns_without_resolve: DNS query without a response
dead_host: Connects to IP addresses that do not respond to requests
unexpected_exception: Unexpected exception
static_pe_duplicate_sections: The PE file structure contains anomalies: duplicate section names
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
access_recyclebin: Manipulation with recyclebin detected
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
writes_data: Writes big amount of data to disk
pe_overlay: PE file contains overlay
suricata_alert: Malicious traffic detected

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