Managed XDR

uiwrapperres.dll (Dridex, Tinba) — malware analysis report

File info

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

Environment

win7/x86 en

Hashes

SHA1
765ba6adb0ac7db9cfb61bfef87bad8e0a567b60
SHA256
47867550eee0740d36e3b559bfcf6dd5ba07d824faa78bb7bf48cd7cbdf7dd29
MD5
f50e4566e9b82c1a600e79084c25b567

Malwares

  • Dridex
  • Tinba

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

T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
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
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)
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1518 locates_browser: Attempts to identify where browsers are installed

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
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
access_recyclebin: Manipulation with recyclebin detected
message_box: Displays a message
error_drawtext: An error occured while executing the file
creates_in_programdata: Creates files in the ProgramData directory
writes_data: Writes big amount of data to disk

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