Managed XDR

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

File info

Filename
nlsdata001b.dll
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
94 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
2891a8a1774523bdbed1eef08d71a0c18fea23c7
SHA256
9f5df788981a0ccdffafde5fe92e40da1b682f575a198a330c52690b7cfa4d5e
MD5
072aa6a5223953ae82bbb31339bcb8bd

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
T1497.001 antisandbox_file: Attempts to detect a sandbox (checks the file name)
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
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

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

Discovery

T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1497.001 antisandbox_file: Attempts to detect a sandbox (checks the file name)
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
static_pe_anomaly: The PE file structure contains anomalies
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