Managed XDR

37f331c07cf45ff9511c9a...a3cf51bbe3bc4434dn.exe (Neshta) — malware analysis report

File info

Filename
37f331c07cf45ff9511c9aaa09012f0a8c3ff8795ec74aea3cf51bbe3bc4434dn.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
2.3 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
d62f508e4aee19b48c0a9ad8a8822c1d7d228261
SHA256
37f331c07cf45ff9511c9aaa09012f0a8c3ff8795ec74aea3cf51bbe3bc4434d
MD5
3ca0ecf8d30b34bb349d77fdba17e130

Malwares

  • Neshta

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

T1562 registry_hide_tracing: Modifies File/Console tracing settings (often used to hide iocs from the system)
T1036 system_filename: Created a file named as a common system file
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_browser: Retrieves personal information from local Internet browsers
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
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

T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1518 locates_browser: Attempts to identify where browsers are installed

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Impact

T1486 modifies_files2: Cryptolocker indicators detected (100 or more files are modified)

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
rat_teamviewer: TeamViewer indicators detected (registry or mutexes)
creates_in_windows: Creates files in the Windows directory
rat_teamviewer_files: TeamViewer indicators detected (files)
dns_without_resolve: DNS query without a response
create_rpc_bindings: Creates RPC connection
access_recyclebin: Manipulation with recyclebin detected
get_policy_info: Retrieves information about a Policy object
neshta_mutexes: Neshta is detected: mutex
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay

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