Managed XDR

msvcr100_clr0400.dll (Tinba, Dridex) — malware analysis report

File info

Filename
msvcr100_clr0400.dll
File type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
File size
1.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
fbffc7d8404951cb63b4b055c0d4ae2f9ab52a66
SHA256
a72e42d01fc65adff0c6a09c5f8f72edd9c59c0b657da0f6beadd369f318a572
MD5
6d222bf92ae5d8b908699de3a8d81752

Malwares

  • Tinba
  • Dridex

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

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
error_drawtext: An error occured while executing the file
test_check_service: Starts services
writes_data: Writes big amount of data to disk

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