Managed XDR

nlsdata001b.dll (Emotet, Dridex) — malware analysis report

File info

Filename
nlsdata001b.dll
File type
MS-DOS executable
File size
93 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
0c700541125c836b79ac81d1bb504c82551b815c
SHA256
f66888620d4c57cdf61d1cd30001158814165964ba22633ee514f21a947ce991
MD5
eaa6478b554a965c39cd39202d86a5c1

Malwares

  • Emotet
  • Dridex

Signatures

Execution

T1569.002 persistence_service: Starts newly created service

Persistence

T1543.003 creates_service: Creates a service, that will start automatically

Privilege Escalation

T1543.003 creates_service: Creates a service, that will start automatically
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

T1070.004 deletes_self: Moves to different location or removes the original executable file
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antisandbox_file: Attempts to detect a sandbox (checks the file name)
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Credential Access

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

Discovery

T1497.001 antisandbox_file: Attempts to detect a sandbox (checks the file name)
T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1057 process_interest: Enumerates processes
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Command and Control

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

Other

yara_rules: Static rules
banker_emotet: Emotet banking trojan indicators detected
creates_in_windows: Creates files in the Windows directory
dead_host: Connects to IP addresses that do not respond to requests
mimics_agent: Uses system User-Agent for requests
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call

Related reports

Managed XDR