Managed XDR

vtdl_lib7fd__ (Dridex, Tinba) — malware analysis report

File info

Filename
vtdl_lib7fd__
File type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
File size
1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
1d1f310ab30abf5b142779b81b1e5ef41b1270dd
SHA256
1dadb622ab37f6035003824a6d205a6beb3ac10662a7fdbc71f84868e8a39f6c
MD5
2847a0d932dc080295c5b8d14bfa6718

Malwares

  • Dridex
  • Tinba

Signatures

Persistence

T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1574 dropper_dll: Creates DLL, which is then loaded into the process
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
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

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
process_crashed: One of the processes has failed
has_pdb: This executable file has a PDB path
access_recyclebin: Manipulation with recyclebin detected
message_box: Displays a message
test_check_service: Starts services
writes_data: Writes big amount of data to disk

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