Managed XDR

file_ptch.bin (Ragnar Locker, RagnarLocker) — malware analysis report

File info

Filename
file_ptch.bin
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
37.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
2537058fbdbf1cfee8bc5f8cb61141dab7567f3e
SHA256
55f024f2786c8019aaf3cc6531e48fc572875fe1334d9e017ab08fa89ea9e6ff
MD5
143cc2501051a60dd8762c848df638d6

Malwares

  • Ragnar Locker
  • RagnarLocker

Signatures

Execution

T1047 has_wmi: Executes one or several WMI requests

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_generic_services: Enumerates services, possibly for anti-virtualization
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
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

Credential Access

T1552 infostealer_mail: Collects personal data from local email clients
T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets
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_generic_services: Enumerates services, possibly for anti-virtualization
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1057 process_interest: Enumerates processes
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 ransomware_files_2: Ransomware(s) RagnarLocker indicators detected (creates keys and the instruction on how to unlock the files)
T1486 ransomware_files: Ransomware indicators detected Ragnar Locker (creates keys and the instruction on how to unlock the files)
T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies

Other

yara_rules: Static rules
ransomware_ragnarlocker: Detected RagnarLocker ransomware
ransomware_shadowcopy: Removes volume shadow copies
test_check_service: Starts services
writes_data: Writes big amount of data to disk

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